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Results in Journal Jurnal Penelitian Pertanian Tanaman Pangan: 181

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Chanifah Chanifah, Ekaningtyas Kushartanti, Raden Heru Praptana, Parti Khosiyah
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 59-68; https://doi.org/10.21082/jpptp.v5n1.2021.p59-68

Abstract:
Jarwo super technology is a combination of superior rice farming technology, including the 2:1 paired rows planting system, high yield potential varieties, bio-decomposers, biological fertilizers, bio-pesticides, and agricultural mechanization application. The assessment aims to determine plant diversity, production increase, and financial feasibility of jarwo super technology rice farming. The assessment was conducted on March-Juni 2017 with the “demplot” method of applied jarwo super technology in Karanganyar Regency, Center of Java. Primary data is growth, production, and rice farming performance at the “demplot”, as well as existing farmer data. Samples were collected purposively, it’s the farmers who carried out the “demplot” and the farmers around the “demplot”, which meant 30 farmers. Data were descriptively analyzed using the average value, RCR, MBCR, net profit value, and BEP. The results showed that the rice yields with jarwo super was 15.63%higher than the existing farmers. Jarwo super rice farming is more efficient and economically feasible with RCR 1.44 value. MBCR is 11.6 value, it that each additional cost of implementing jarwo super rice farming of 1.000 IDR increases income by 11.600 IDR. Proportion of costs increase in jarwo super rice farming is 350.000 IDR, but profits reached 4.077.083 IDR. Net profit value of 1.7 shows that jarwo super rice farming can increase profits. Production level and dry grain harvested price on farmers level were 30.76%higher compared to BEP production and BEP price. Jarwo super rice farming is feasible to develop that because can increase farmer’s production and profits.
, B. Suwitono, Y. Hidayat, Fredy Lala
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 37-46; https://doi.org/10.21082/jpptp.v5n1.2021.p37-46

Abstract:
Approximately 80% of the land under the stands of coconut trees has the opportunity for intercropping. Corn farming under coconut stands can increase the efficiency of land use and provide additional income to farmers. One of the determinants of the success of increasing crop production is through balanced and fertilization rational and the use of superior varieties. The study aims to determine the effect of type, dose, and time of fertilization of corn on dry land under coconut stands. The study was conducted from June to October 2018 in Bumi Restu Village, Wasile District, East Halmahera Regency. The results showed that maize production in 40% shade conditions under coconut stands was influenced by the variety and fertilization, but only one variable interacted namely dry shelled weight.. Corn production on dry land under coconut stands achieved by the four varieties (Variety Nasa 29, Sukmaraga, Bhishma, and Lamuru) are as follows; 5.5 tons/ha; 4.7 tons/ha; 5.3 tons/ha and 5.2 tons/ha at a dosage of organic fertilizer 2.000 kg/ha,NPK Phonska 450 kg/ha, and urea 150 kg/ha. The Bisma and Lamuru varieties are shade tolerant and can be grown on dry land under the stands of coconut.
Dini Yuliani, Suprihanto Suprihanto, Sudir Sudir
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 15-24; https://doi.org/10.21082/jpptp.v5n1.2021.p15-24

Abstract:
Bacterial leaf blight (BLB) is a major disease of rice in Indonesia. Cilacap District of Central Java Province and Kuningan District of West Java Province are two endemic areas of BLB. The field trial was carried out in Cilacap and Kuningan in planting season of 2017 to evaluate resistance to BLB of 20 rice genotypes including 10 new improved varieties, 1 differential variety, 9 isogenic lines. The trial was arranged in a completed block design with three replications. Data collected were: 1) Incidences and severities of BLB; 2) Resistances of the rice genotypes to BLB; and 3) Pathotypes of Xanthomonas oryzae pv. oryzae (Xoo). The results showed the incidence of BLB disease in Cilacap of 0-100% and disease severity of 0 to 85.18%. In Kuningan, the disease incidence was 0- 100% and the disease severity from 0 to 79.26%. The varieties of Inpari-32, Java-14, and the lines of IRBB-5, IRBB-7, IRBB-21, and IRBB-57 were resistant to BLB in Cilacap and Kuningan. Those varieties/lines were expected to be used as a source of resistance to BLB in Cilacap and Kuningan. Xoo pathotype test showed that 14 Xoo isolates from Cilacap classified as pathotype VIII, while nine Xoo isolates from Kuningan were classified as Pathotype III. The planting of resistant varieties based on the existence of the dominant of Xoo pathotypes which specific in the field can reduce the incidence and the severity of BLB disease effectively and efficiently, while the assembly of BLB resistant varieties can use the resistant genes of xa5, Xa7, and Xa21 as they were still effective to control the dominant pathotypes of BLB in Indonesia.
Wasis Senoaji, Bambang Tri Rahardjo,
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 25-36; https://doi.org/10.21082/jpptp.v5n1.2021.p25-36

Abstract:
Nephotettix virescens is the most effective vector for transmitting tungro disease to rice plants. Two different viral particles cause Tungro transmission. Disease control was often not anticipated in the field, especially when planting is asynchronous, that cause been detected lately. At the cellular level, vector interactions with viruses indicate vector proteins response to viral in the body of vector insects which involved in virus transmission in plants. This study aims to describe the relationship between the differentiation of N. virescens vector protein profiles on the types of tungro symptoms resulting from the transmission to develop techniques for early detection and control of the transmission process. The workflow of this study is screening on vector insects to obtain protein candidates thought to have a role in tungro transmission that had never been previously reported. The results of this study suggested that proteins with estimated molecular weights of 132, 73, and 49 kDa are candidates for proteins that can be used for screening purposes or virulent vector tracing as an early warning alternative to control tungro disease in endemic areas.
Sawitania Situmorang, Setia Sari Girsang
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 69-78; https://doi.org/10.21082/jpptp.v5n1.2021.p69-78

Abstract:
Stapple food subsector is the second largest contributor after plantations subsector to Indonesian gross domestic product (GDP). However, since 2015, the productivity has been declining, though still provides a positive value. To anticipate the simultaniously decline of the productivity, the government has socialized the Seed Self Sufficiency Village (3SV) Programe with paddy. One of the provinces that has has been received the implementation of this 3SV programe is North Sumatra. Therefore, this study aims to analyze the economic performance of 3SV fostered village’s rice seed growers such as: production costs, profitability and business efficiency as well as the factors that affect the fostered paddy seed’s growers. This research was conducted using a survey method from August to November 2019. Data was collected through interviews with 30 fostered paddy seed’s growers in the districts of Deli Serdang, Batu Bara, Langkat, Serdang Bedagai, Simalungun, and South Nias. The location was chosen deliberately while the respondent farmers were chosen by judgmental method. The level of profitability is calculated using Gross Profit Ratio (GPR) while technical efficiency is analyzed using the Stochastic Frontier Production Function. The results showed that the rice seedling business in the observed area was strongly influenced by area of land, the amount of use of seeds and additional fertilizers. Meanwhile, increasing the use of labor, basic fertilizers, Growth Regulator (GR), and pesticides will reduce the performance of the rice seedling business. The availability of irrigation water and farmer groups has a big influence in reducing technical inefficiencies.
Rima Purnamayani, Adhe Phoppy Wira Etika, Haris Syahbuddin
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 47-58; https://doi.org/10.21082/jpptp.v5n1.2021.p47-58

Abstract:
Ncreasing the cropping index is a strategic policy and program to increase the efficiency of available land use. Referring to the potential and constraints of cropping index improvement, it is necessary to review the supporting components that affect cropping index implementation improvement in some agroecosystems. The purpose of this study was to aims to analyze the components of farming that support the implementation of increased cropping index in upland, rainfed lowland, and swampy land. This activity was carried out in five provinces namely Banten, West Java, DI Yogyakarta, East Nusa Tenggara, and South Sumatra from August to December 2018. The site selection was done purposively based on agroecosystems. The collected data were tabulated and analyzed using quantitative and qualitative approaches then interpreted descriptively and analyzed with multiple linear regression analysis. The dependent variable (Y) is the cropping index and the independent variables (xi) are labor, water availability, demonstration plot capital availability, water resources, supervisory, and extension media. The results of the combined linear regression analysis showed that water availability and supervisory were the supporting components that have a significant effect on every agroecosystem. Meanwhile, water, capital and labour availability were variables that have a significant effect on the implementation of increased cropping index in upland agroecosystems. The dissemination media has a significant effect only on rainfed lowland, while the capital availability and water sources were supporting components that have a significant effect at swampy land.
Slamet Bambang Priyanto, Roy Efendi, Muhammad Azrai
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 1-14; https://doi.org/10.21082/jpptp.v5n1.2021.p1-14

Abstract:
Low maize yields due to low nitrogen generally occur on marginal land. Maize development in Indonesia is directed at marginal land due to limited fertile land, especially in other lands in Indonesia besides Java. Therefore, the assembly of low N tolerant maize varieties plays an important role in increasing production on marginal land. Therefore, the improvement of low N tolerant hybrid maize was required. Information on the combining ability of inbred lines was important in the hybrid maize breeding program. This research aims were to determine genetic parameters, general combining ability, specific combining ability of maize lines and at three levels of N fertilization. This research was conducted at the Bajeng Experimental farm South Sulawesi from August to November 2019. The research was arranged in a split-plot design with two replications. The main plots were three nitrogen levels i.e. 0 kg N/ha, 100 kg N/ha, 200 kg N/ha and the subplots were 36 hybrids formed from a half diallel cross and its parents. The results showed that compared to yield at 200 kg N/ha, yield at 100 kg N/ha and 0 kg N/ha reduced 18,80% and 38,69% respectively. ear number, ear weight, shelling percentage and number of seeds per row were controlled by non-additive genes, while moisture content, 100 seeds weight, ear length and number of rows per ear were controlled by additives gene. Lines AVLN 118-7 and AVLN 83-2 have good GCA for yield grain overall levels of fertilization. Crosses AVLN 83-2/AVLN 124-4, AVLN 83-2/AVLN 32-8, and AVLN 122-2/AVLN 124-9 have the good combining ability under both low and high N conditions. They could be used to develop low N tolerant varieties.
Hamyana Hamyana, Agus Cahyono, Ainu Rahmi
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 5, pp 79-90; https://doi.org/10.21082/jpptp.v5n1.2021.p79-90

Abstract:
One of the problems faced by maize farmers in Sumberpucung District, Malang, East Java, is the relatively small scale of the business, which has implications for high production costs. Efforts that can be taken to resolve these problems include a partnership pattern. This study aims to determine the feasibility of a partnership pattern and to analyze its effect on the income of maize farmers in Sumberpucung District. The research method is survey. Marginal benefit cost ratio (MBCR) analysis aims to determine the feasibility of partnership pattern farming and simple linear regression analysis is used to determine the effect of partnerships on income. The research object is the maize farmers who have partnered and who have not partnered in Sumberpucung District. The sampling technique used stratified proportional random sampling with a sample size of 76 people who were determined using the Slovin formula. The results showed that the income of partnership-patterned maize farmers was greater than that of non-partnership maize farmers with a difference of Rp. 7,573,000 / ha. Analysis of the marginal benefit cost ratio (MBCR) with a value of 9.98 (> 1) proves that the partnership pattern of maize farming is feasible to apply. This means that each additional cost of Rp. 1 will increase the benefits of farmers by 9.98. Regression analysis shows that the partnership has a significant effect on the income of maize farmers. Hypothesis testing shows the significance value of the partnership variable is 0.000 (<0.05). Thus H_1 is accepted, which means that the partnership has a significant effect on farmers’ income.
Anella Retna Kumala Sari, Dian Rahmawati, Samrin Samrin
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 145-151; https://doi.org/10.21082/jpptp.v4n3.2020.p145-151

Abstract:
Obtaining an optimum high yield of rice is confronted by pests that disrupt the productivity. Pest control by applying chemical pesticide is dangerous for the natural enemies therefore, it is necessary to introduce an integrated pest management, based on the natural enemies conservation in the field. Research was conducted in Wawotobi, Konawe Regency, Southeast Sulawesi from Februari to Juni 2019, aimed to understand the diversity of pests and natural enemies in rice crop, particularly arthropods group. The information is useful as a resource base in the implementation of an integrated pest management on rice agroecosystem. Pest observation was done by catching the insects using sweep net and were directly counted at the location. Diversity index of pest was analyzed using Shannor-Weinner equation and insect dominance using Simpson Index of Dominance equation. The utilization of improved rice varieties greatly affected the population of pests and natural enemies. Total of 7 species of pest arthropods and 6 species of natural enemy arthropods were identified at the experimental location. Therefore, the population of pests and natural enemy arthropods were considered at balance. The most dominance pest arthropods was brown planthopper, particularly on Tarabas variety and spider was the most dominant natural enemy.
Muhlis Ardiansyah, Widyo Pura Purba, Anang Kurnia
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 135-144; https://doi.org/10.21082/jpptp.v4n3.2020.p135-144

Abstract:
Data produktivitas padi dibutuhkan untuk mendapatkan informasi tentang capaian target pembangunan berkelanjutan (Sustainable Development Goals - SDGs). Data produktivitas padi diperoleh dari hasil survei ubinan rutin Badan Pusat Statistik (BPS). Permasalahan pada pelaksanaan survei adalah pengukuran bobot gabah pada petak lahan terpilih tidak selalu berhasil, terutama di wilayah dengan aksesibilitas yang sulit. Hal ini menyebabkan beberapa data hilang. Salah satu solusi untuk mengatasi masalah tersebut adalah menduga bobot gabah per plot ubinan berdasarkan peubah yang mudah diperoleh. Penelitian ini dilakukan di Kalimantan Tengah pada tahun 2019, bertujuan untuk mengevaluasi kinerja model Quantile Regression Forest (QRF) dalam menduga berat gabah atau produktivitas padi per 2,5 x 2,5 m2. Metode yang diperbandingkan adalah Model Linier (LM), QRF, Geo-QRF, dan Geo-QRF reparameterisasi. Hasil penelitian menunjukkan peubah varietas, pupuk, dan titik koordinat dapat digunakan untuk menduga bobot gabah pada survei ubinan di Kalimatan Tengah. Model Geo-QRF dengan reparameterisasi peubah pupuk terbukti mampu menduga bobot gabah lebih baik dibanding model linier karena menurunkan RMSE (Root Mean Square Error) dan meningkatkan nilai korelasi antara data aktual dengan data dugaan. Hasil simulasi menunjukkan apabila data hilang tersebar secara acak (data hilang tipe III) maka angka rata-rata gabah yang dihasilkan mirip dengan rata-rata bobot gabah pada tingkat respon survei 100%. Berbeda dengan jenis data hilang tipe I dan II, rata-rata bobot gabah yang dihasilkan dapat menjadi uderestimate atau overestimate jika tidak ditangani. Prediksi bobot gabah menggunakan model Geo-QRF dengan reparameterisasi dapat memperbaiki masalah data hilang dengan hasil yang lebih mirip dengan rata-rata bobot gabah pada tingkat respon 100%. BPS diharapkan mempertimbangkan dan mengkaji solusi yang diajukan dalam penelitian ini.
Untung Susanto, Samsul Arifin, Wage R. Rohaeni, Rina H. Wening
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 119-124; https://doi.org/10.21082/jpptp.v4n3.2020.p119-124

Abstract:
Rice productivity in rainfed area is mostly determined by the environmental condition, cultivation technique, specific stress occurrence, and the variety planted. There are around 4 million ha of rainfed lowlands in Indonesia, contributing the second biggest supply for national rice production after the irrigated area. Planting the most suitable rainfed lowland rice variety is expected to increase rice yield in the area. This research was aimed to test 34 rainfed lowland rice lines along with five check varieties in two targeted areas, i.e. Purwakarta during Dry Season 2015 (transplanting technique of 21 days old seedlings) and Pati during Wet Season 2015/2016 (using direct seeded or gogo rancah planting method). The treatments were arranged in a randomized complete block design with three replications, at 3 x 5 m2 plot, and 25 cm x 25 cm plant spacing. Results showed the existence of genetic x environment interactions of all observed traits, except for tiller number. Grain yield, tiller number, and number of filled grains/panicle in Purwakarta was each higher than that in Pati. Seven lines were identified as having high yield in Purwakarta and were medium in Pati, and five lines were high yield in Pati and were medium in Purwakarta. Line IR83383-B-B-129-4 (10.35 t/ha) yielded higher compared to the best check Inpari 13 (8.27 t/ha) in Purwakarta. Most of lines in Pati had comparable yield with the best check Inpari 23 (7.18 t/ha). Grain yield was positively correlated with number and percentage of filled grains/panicle and negatively correlated with number of unfilled grains/panicle. Keywords: R
Saptowo J. Pardal, V. R. Rahayu, K. Nugroho, Suharsono Suharsono
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 171-177; https://doi.org/10.21082/jpptp.v4n3.2020.p171-177

Abstract:
High genetic diversities are important factors in the development of new crop varieties. In vitro technique and Genetic Engineering are applicable for development of crop variability that is not found in the gene pool. Genetic variation may be derived from genetic variations in cells or in chromosomes. Variations in the cells may be obtained from cell mutations or polysomic mutations of a certain cells during the in vitro culture (plant regeneration in vitro). Genetic variations in chromosome may be caused by gene insertion, changes of chromosom structures (crossings), as well as changes of genes and cytoplasms. Changes of genetic characters may be improved by inserting novel gene into the cells target. To improve the plant tolerances to abiotic factors, tolerance gene constructs can be inserted to the target cells. For example, by inserting the Aluminum tolerance gene construct such as MaMt2 gene its can induce genetic diversity in transgenic soybean lines resulted from transformation. Research results showed that genetic diversity in transgenic soybean lines was found based on microsatellite marker (SSR= Simple Sequence Repeat). The genetic diversity produced by using genetic manipulation can provide chances to develop new plant genotipes that contain Al tolerance character.
Sujinah Sujinah, Nurwulan Agustiani, Indra Gunawan, Swisci Margaret
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 125-133; https://doi.org/10.21082/jpptp.v4n3.2020.p125-133

Abstract:
An intensive swampland rice technology package, dubbed as RAISA, consisted of water and land management, swampland specific variety, population density bio-fertilizer, soil ameliorant, inorganic fertilization, integrated pest management, and use of mechanization. Validation of RAISA’s technology was aimed to determine technology components which significantly affected yield increase. The experiment was conducted at Karang Agung Experimental Station and farmer’s field in Banyuasin, South Sumatera, using a Randomized Complete Block Design with seven treatments and four replications. The treatments consisted of RAISA minus specific variety (P1), RAISA minus optimum plant population (P2), RAISA minus bio-fertilizer (P3), RAISA minus soil ameliorant (P4), RAISA minus inorganic fertilizer (P5), RAISA full package (P6), and farmer’s crop cultivation technique as control (P7). Result showed that the variety affected significantly on plant height, and plant population affected the number of tillers. The RAISA technological package increased rice yield by 41% compared to that of farmer practice. The RAISA technological components that significantly increased rice yield are variety, plant population, and soil ameliorant. RAISA is considered feasible to be applied with an R/C ratio of 1.57-1.97.
Nining Nurini Andayani, Muzdalifah Isnaini, Muhammad Aqil, Amran Muis, Marcia Bunga Pabendon, Muhammad Azrai
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 161-170; https://doi.org/10.21082/jpptp.v4n3.2020.p161-170

Abstract:
Functional maize tends to be more susceptible to major maize diseases, particularly Downy mildew. Among the functional maize are Quality Protein Maize (QPM) and Provit A maize. The presence of higher amino acid and beta carotene in functional maize might have caused these types of maize more susceptible to Downy mildew disease. The objective of the research was to identify the heterotic pairs among maize inbreds i.e. QPM, Provit A, and local maize varieties resistant to Downy mildew disease using Simple Sequence Repeats (SSR) marker. The research was conducted from April to July 2017 at the Molecular Biology Laboratory of Indonesian Cereals Research Institute. A total of five QPM inbreds, 15 Provit A inbreds, and 11 Downy mildew resistant local varieties of maize were used in the experiment using 34 SSR markers. Results indicated that among 34 SSR locus analysed, variation of allele lengths ranged from 74 bp to 500 bp. A total of 125 alleles ranging from two to nine alleles per locus with an average of 3.68 alleles were generated. The data indicated wide genetic variations among characters. DNA band profile showed that nc130 marker produced the highest PIC (over 0.83) and allele value (8.00). Genetic distance analysis found a total of 21 heterotic genotypes with genetic distance exceeds 0.65.
Yugi R. Ahadiyat, Rostaman Rostaman, Ahmad Fauzi
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 153-160; https://doi.org/10.21082/jpptp.v4n3.2020.p153-160

Abstract:
Pest and disease control for the upland rice cultivation needs to be done ecologically with the proper dose of fertilizer. Coconut shell as natural waste can be converted into wood vinegar which is useful for a biopesticide. The application of coconut shell wood vinegar as biopesticide combined with different NPK fertilizer doses needs to be examined in controlling pests and diseases in the upland rice crop. The objective of this study was to know the effect of NPK fertilizer rate and coconut shell wood vinegar application on pests (locusts and leaf folder), and on pathogen infection (Cercospora) on upland rice. The experiment was conducted in Klampok Sub-district, Banjarnegara Regency from April to July 2017. A split plot design was used replicated three times. The main plot was NPK fertilizers viz. 50% and 100% recommendation dosage, and the sub plots were concentration of coconut shell wood vinegar viz. 0% 1%; 1.25%; 1.67%; 2.5% and 5%. The intensity of pest attack, namely locusts and leaf folder, and pathogen infection of Cercospora brown spot disease were observed. Results showed that application of coconut shell wood vinegar suppressed the intensity of locust and leaf folder pests, and lower the intensity of Cercospora pathogen infection. To reduce the intensity of pests and pathogenic infections in upland rice, the application of coconut shell wood vinegar is suggested along with the use of low dose of NPK, for more effective and efficient pest control in environmentally friendly manner.
Sujinah Sujinah, Aris Hairmansis, Priatna Sasmita, Yudhistira Nugraha
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 63-71; https://doi.org/10.21082/jpptp.v4n2.2020.p63-71

Abstract:
Padi merupakan tanaman semusim berumur relatif pendek sehingga efektivitas pemanfaatan radiasi matahari menjadi penentu produksi. Penelitian bertujuan mengetahui hubungan antara umur dan produktivitas gabah, dihubungkan dengan hasil biomasa per satuan waktu dan indeks panen, dilakukan di dua lokasi pada musim hujan 2016/2017, yaitu di Sukamandi (Aluvial, 5 m dpl) dan Muara Bogor (Latosol, 250 m dpl). Percobaan pertama yaitu skrining hasil biomasa dan umur tanaman 27 genotipe dengan latar belakang genetik berbeda, menggunakan rancangan acak kelompok dengan tiga ulangan. Percobaan kedua, pemupukan dengan tiga dosis pupuk N terhadap enam genotipe hasil seleksi dari percobaan pertama dilakukan di Sukamandi pada MH 2017/2018. Menggunakan rancangan percobaan split plot. Hasil percobaan menunjukkan terdapat interaksi nyata antara genotipe dengan lokasi penelitian untuk umur tanaman dan hasil biomasa. Korelasi antara hasil gabah dengan umur berbunga untuk kelompok tanaman berumur genjah tidak nyata, sedangkan untuk kelompok tanaman umur dalam korelasinya negatif sangat nyata. Hal tersebut mengindikasikan genotipe kelompok umur panjang cenderung mengakumulasi biomasa yang dicirikan oleh rendahnya indeks panen. Genotipe padi yang hasilnya tinggi adalah yang umur berbunganya genjah (75-85 hari) dan memiliki indeks panen tinggi. Dari percobaan pemupukan menunjukkan varietas memberikan respon yang berbeda terhadap dosis pemupukan untuk karakter bobot biomas kering dan hasil gabah. Genotipe B14671E-MR-39-3-2-2 dan B12411 MR memberikan respon positif nyata terhadap peningkatan pemupukan urea dari dosis 115 kg N/ha ke 207 kgN/ha, sedangkan varietas Inpari-32, Inpari-19, dan Inpari-43 tidak menunjukkan respon nyata. Informasi yang diperoleh berguna bagi peneliti pemulia tanaman dalam merakit varietas padi berdaya hasil tinggi.
Sagung Ayu Nyoman Aryawati, Heni Safitri, Anak Agung Ngurah Bagus Kamandalu, Wayan Sunanjaya, Anela Retna Kumala Sari
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 73-79; https://doi.org/10.21082/jpptp.v4n2.2020.p73-79

Abstract:
The stages of assembling new superior varieties are the adaptation test lines of hope that will be proposed. Adaptation test was carried out in SubakBengkel, Tabanan Regency and SubakBatanWani, Badung Regency, Bali in 2018. The purpose of this study was to determine the agronomic performance of some rice lines in the two locations in the Province of Bali. The study used a randomized block design (RBD) with four replications. Data were analyzed using SAS and DMRT applications.The results of the analysis showed that the lines of hope that were tried had a significant effect on all plant parameters observed. The highest rice productivity was produced by the BP20797d-SKI-1-2-7-1 line of hope, which was 9.20 tons GKG h-1, more 4.78 and 7.38% compared to Ciherang and Inpari 33 varieties.
Jumali Jumali, Dody D Handoko, Siti Dewi Indrasari
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 97-103; https://doi.org/10.21082/jpptp.v4n2.2020.p97-103

Abstract:
Rice grain drying using sun radiation has its problem during the rainy season, due to low radiation intensity. Box dryer using gas as its source of energy had been developed to overcome the problem during the rainy season. This research was aimed to study the effect of drying methods on physical, physicochemical, and organoleptic quality of some improved rice varieties. Seed of five rice varieties, namely Ciherang, Inpari 30, Inpari 32 (white grain rice), Inpari 24 and Inpago 7 (red grain rice), were planted at Sukamandi Research Station, Indonesian Center for Rice Research, following the Integrated Crop Management approach. The rice crops were harvested when the grain had ripen optimally, threshed using a threshing machine and the grains were dried using a box type dryer and using the sun radiation. The milled rice was analyzed for their physical, physicochemical, and organoleptic quality. Results showed that the differences of drying methods, namely sun-drying and box drying, affected the physical quality of rice grain. Box dryer for Ciherang variety yielded higher percentage of unpolished milled rice and the head grain rice was slightly higher than that of sun-drying. However, drying methods did not affect the physicochemical and organoleptic quality of the cooked rice. Box dryer is considered suitable for rice grain drying during the rainy season.
Elis Septianingrum, Zahara Mardiah
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 89-96; https://doi.org/10.21082/jpptp.v4n2.2020.p89-96

Abstract:
Selama penyimpanan, beras merah mengalami perubahan mutu fisik, kimiawi, maupun mutu rasa atau sensoris. Mutu fisik menjadi kriteria konsumen dalam memilih beras berkualitas, sedangkan karakeristik dan mutu rasa menjadi faktor akhir penentu keputusan konsumen untuk memilih beras yang dikonsumsi. Tujuan penelitian ini adalah untuk mengevaluasi mutu sensoris varietas beras merah pecah kulit selama penyimpanan. Varietas yang digunakan yaitu Inpari-24 dan Inpara-7 yang dikemas vakum dan disimpan pada suhu penyimpanan 30OC (suhu ruang) dan 4OC (suhu penyimpanan dingin) selama enam bulan. Uji mutu dan hedonik dilakukan setiap dua bulan selama enam bulan terhadap atribut mutu sensoris, yaitu: warna, rasa, aroma, kepulenan, dan penerimaan umum. Hasil uji mutu sensoris menunjukkan selama enam bulan penyimpanan terjadi penurunan warna, dari sangat merah menjadi agak merah dan peningkatan kepulenan dari pera menjadi pulen hingga agak pulen, tetapi tidak terjadi perubahan kilap dan tidak terdapat perubahan aroma yang tidak disukai. Kepulenan dan rasa nasi berkorelasi dengan penerimaan umum terhadap nasi beras merah. Penyimpanan beras merah dikemas secara vakum pada suhu 30OC dan pada suhu 4OC memiliki tren perubahan dan nilai skor mutu yang tidak berbeda nyata. Penyimpanan beras merah pecah kulit dalam kemasan vakum pada suhu ruang (30OC) selama enam bulan cukup efektif mempertahankan mutu beras.
Saeka Unoki, Trias Sitaresmi, Hiroshi Ehara, Yudhistira Nugraha
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 81-88; https://doi.org/10.21082/jpptp.v4n2.2020.p81-88

Abstract:
Iron toxicity affects the growth and yield of rice plant. Overcoming the damage of rice production by iron toxicity requires furthermore researches from laboratory to field levels. Here, we study responses of rice genotypes to iron toxicity between vegetative stage in hydroponic and whole grow stages in the pot. The first experiment was hydroponic experiment using twelve rice genotypes which were growth in the Yoshida Solution with addition of 0.2 % of agar. Three level of iron was given at 0, 500 and 700 ppm. The second experiment was the pot experiment using alluvial soil added with 3.000 ppm of ferrous combine with four levels of potassium and the control on Cilamaya Muncul (tolerant), Inpara 8 (moderate tolerant) and IR 64 (susceptible). In hydroponic experiment, even though the symptom appeared obviously, the leaf bronzing score (LBS) of tolerant and sensitive genotypes were not different. Physiological traits were significantly affected by Fe treatment in all varieties. Then symptom and physiological traits were significantly correlated. Through the pot experiment, it was confirmed the tolerance of each varieties. However, we couldn’t see the correlation between the LBS on hydroponic and soil at this time. And the heading delay was new finding, but it depended on varieties. We also could see the possibility of potassium application to inhibit iron toxicity but still we need to explore how it works. Kata kunci: iron toxicity, rice, hydroponic, soil
Siti Uswatun Hasanah, Sukrasno Sukrasno, Rika Hartati
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 113-118; https://doi.org/10.21082/jpptp.v4n2.2020.p113-118

Abstract:
Soybeans is a functional food containing higher isoflavone compared to that of other food crops. Genistein, daidzein and glisitein are components of soybean isoflavones. Genistein to function as a protective agent against cancer and cardiovascular diseases. The content of genistein in soybean can be influenced by soybean varieties and plant maturities. This study was aimed to determine the genistein content of soybean varieties in Indonesia. The experiment was carried out at Biology Pharmacy laboratory of Indonesian School of Pharmacy and at Instrument Laboratory of School of Pharmacy, of Bandung Institute of Technology. Total of nine soybean varieties were used in the experiment. Extraction was carried out using heat treatment, and the extract yield was calculated on the base of grain soybean being used. The highest was 11.19% obtained from Dering 1 variety. The genistein was monitored using the Thin Layer Chromatography (TLC), but the result was not clear. Fractionation was performed using gravity column chromatography, and the fraction results were analyzed using a spectrophotodensitometer. Results showed that genistein content of Anjasmoro and Argomulyo soybean varieties, each was late and medium maturity, had high genistein content of 15.996 ± 2.51 µg/gram and 14.175 ± 2.03 µg/gram, respectively. In contrast, soybean varieties Detam 1, medium maturity, had low genistein content of 5.313 ± 4.77 µg/gram. This finding is important for the functional food industry in selecting raw material.
Teddy Wahyana Saleh, Jaka Sumarno, Ari Abdul Rouf
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 105-111; https://doi.org/10.21082/jpptp.v4n2.2020.p105-111

Abstract:
Produksi padi dan jagung dapat ditingkatkan melalui optimalisasi lahan dengan pola tumpangsari. Tidak optimalnya produktivitas padi dan jagung dalam pola tanam tumpangsari mungkin disebabkan oleh kombinasi varietas yang kurang tepat. Tujuan penelitian ini adalah mengidentifikasi kombinasi varietas padi dan varietas jagung yang tepat dalam pola tanam tumpangsari, untuk memperoleh produktivitas yang tinggi. Penelitian dilakukan di Desa Durian, Kecamatan Gentuma Raya, Gorontalo, pada MT 2018/2019, menggunakan rancangan acak kelompok factorial, empat ulangan. Faktor pertama adalah varietas padi, yaitu P1 (Inpago-11), P2 (Inpari-42), P3 (Ponelo), dan P4 (Situbagendit). Faktor kedua adalah varietas jagung, yaitu J1 (Bima-20), J2 (NK-22), J3 (HJ-21) dan J4 ((JH-27), ditambah perlakuan padi monokultur dan perlakuan jagung monokultur. Ukuran petak 12,5 m x 12,5 m. Hasil penelitian menunjukkan kombinasi padi varietas Ponelo dan jagung varietas HJ-21 memberikan hasil tertinggi, masing-masing 4,17 t/ha padi dan 8,32 t/ha jagung. Nisbah kesetaraan lahan tertinggi (2,24) dihasilkan dari kombinasi perlakuan tumpangsari padi varietas Ponelo dengan jagung varietas HJ-21. Padi varietas Ponelo adalah varietas local setempat, sehingga diharapkan mudah untuk diadopsi oleh petani.
Mira Landep Widiastuti, Sri Wahyuni, Aida Fitri Viva Yuningsih, Holil Munawar Rohman, Ahmad Yajid
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 27-34; https://doi.org/10.21082/jpptp.v4n1.2020.p27-34

Abstract:
Seed quality testing is one of aspect control and quality assurance for certified seeds. The grain shape is one of the important parameter components tested in the seed certification process especially in the field. The common method used were using human/ analysts visual observation. It has a high degree of subjectivity and low efficiency. Observation of complex samples in the field requires an alternative observation that is more subjective and accurate. An alternative technology for identifying seeds during certification and production is identification based on digital images. The purpose of this study were to identify and classify rice seeds based on physical form using digital image analysis. A total of 20 varieties with various shapes have been taken with a microscope that connected to the camera and computer. The resulting image file was analyzed using imageJ 1.51k software and analyzed statistic to discriminate the seeds tested according to their group. Results from this study indicated that digital image analysis is able to identify and classify seeds. The grouping of seeds into long, medium and round seed categories based on perimeter, circularity, AR, and round parameters with successive correlation levels is 95.4%; 82.5%; 45.3% and 38.9%. This method is more sensitive to identifying seed characteristics than eye visualization of seeds whose physical size is outside the range of numbers specified in the description. For example Cisadane, Gilirang and Ketonggo seeds.
, Zairin Zairin, Satoto Satoto, Ali Jamil, Priatna Sasmita
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 9-16; https://doi.org/10.21082/jpptp.v4n1.2020.p9-16

Abstract:
Multi-environment experiment could reveal the performance and adaptation of the advanced breeding lines for specific or general environment. The objective of the present investigation was to analyze the pattern of Genotype x Environment (G x E) interaction for grain yield of 67 genotypes by Additive Main effects and Multiplicative Interaction (AMMI) model using the data generated from observational yield trial in three different coastal rice environment in Indonesia including one site in coastal of Eretan, Indramayu (West Java) and two sites in the coastal area of Mataram, West Nusatenggara during dry season of 2009. In each location, the experiment was arranged in a randomized complete block design with three replications, 5m2 plot size and 20 cm x 20 cm of planting space. Standard management practices for irrigation field were followed for all trials. The results showed the highly significant genotypic and G x E interaction. The genotype x environment (GxE) interaction influenced the relative ranking of the genotypes across environment. Genotype 62(IR76397-2B-6-1-1-1-1), G3(IR58427-5B-15), G61(IR76393-2B-7-1-1-3-1), G19 (IR73055-8-1-1-3-1), G26 (IR 77674-3B-8-2-2-14-1-AJY5), G38(IR77674-3B-8-2-2-14-2-AJY4), G35(IR77674-3B-8-1-3-13-2-AJY2), G44(IR68144-2B-2-2-3-3), and G53(IR72593-B-18-2-2-2) produced higher yield compared to the overall mean, and showed low G x E interaction effect with low ASV (AMMI’s Stability Value) score presented the high yield genotype with high adaptability compared to the checks. G23(IR77674-B-20-1-2-1-3-6-4-AJY1,8.39 t/ha), G25 (IR 77674-3B-8-2-2-12-5-AJY2, 8.11 t/ha), G24(IR77674-3B-8-2-2-8-3-AJY4, 8.32 t/ha), G18(IR72049-B-R-22-3-1-1, 8.78 t/ha), produced high yield and indicated suitable for Eretan environment. Both the stable genotypes and the specific adaptation genotypes with the highest average yield compared to the checks will be further evaluated in prelimenary yieid trials in the several environments with the bigger size plot.
Yuni Widyastuti, Bayu Pramono Wibowo, Satoto Satoto
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 1-7; https://doi.org/10.21082/jpptp.v4n1.2020.p1-7

Abstract:
Adoption of the hybrid rice varieties by farmers is often impaired by the high price of hybrid seed, due to low yields in hybrid seed production fields. Female outcrossing ability and female hybrid seed production ability, defined as the rate of filled spikelets of the male sterile line and as its grain yield under outcrossing, respectively, determine plant traits for hybrid seed yield. We identified an morphological characters and outcrossing rate ability of 6 hybrid rice combination that affect grain yield of hybrid rice seed production. The experiment conducted in 3 locations i.e. Subang, Malang, and Ungaran districts during dry season of 2016. Subang is the best location to hybrid rice seed production with the highest average of grain yield. Hipa 19 was the hybrid varieties having > 1 ton/ha grain yield highest that others. The important agronomic characteristics that affected of F1 grain yield i.e. plant height, number productive tillers, number of filled grains, exerted panicle rate, dan outcrossing rate. Correlations between number of filled grains, outcrossing rate, and grain yield were tight and highly significant. High yield potential and cost-effective for hybrid seed production can be achieved using hybrid rice with high outcrossing rate and suitable condition of an environment.
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 53-62; https://doi.org/10.21082/jpptp.v4n1.2020.p53-62

Abstract:
Peningkatan produksi kedelai nasional dapat diupayakan melalui intensifikasi pada lahan optimal, dan perluasan area tanam pada lahan-lahan suboptimal diantaranya lahan kering iklim kering (LKIK). Salah satu upaya peningkatan produktivitas di LKIK adalah dengan penerapan pola tanam tumpangsari. Penelitian bertujuan untuk mengetahui keunggulan ekonomis dan penerimaan petani terhadap introduksi paket teknologi tumpangsari kedelai dengan jagung di sentra produksi jagung pada LKIK Kabupaten Tuban, Jawa Timur. Penelitian dilaksanakan pada musim tanam Maret-Juli 2019 di Desa Pongpongan Kecamatan Merakurak, dan Desa Gesing Kecamatan Semanding. Parameter yang diamati meliputi keragaan hasil biji kedelai dan jagung, biaya produksi, penerimaan, dan keuntungan usahatani, keunggulan ekonomis pola tanam tumpangsari (R/C rasio, B/C rasio, IKF, dan NKP), dan penerimaan petani. Paket teknologi tumpangsari kedelai dengan jagung, yakni jagung ditanam baris ganda (40 cm x 20 cm) x 200 cm satu tanaman/lubang dan kedelai diantara baris ganda jagung dengan jarak tanam 30 cm x15 cm dua tanaman/lubang (isi 5 baris kedelai), dosis pupuk sesuai kesuburan tanah dan populasi tanaman mampu memberikan keuntungan lebih tinggi dibandingkan pola tanam monokultur jagung. Hal ini karena hasil jagung pada pola tanam tumpangsari juga relatif sama dengan hasil jagung pola tanam monokultur. Tumpangsari kedelai varietas Dena 1 dengan jagung memiliki keunggulan ekonomis lebih tinggi dibandingkan tumpangsari jagung dengan varietas kedelai lainnya, dengan keuntungan Rp 19.146.500/ha; R/C rasio 2,51; B/C rasio 1,51; IKF 12.843; dan NKP 1,69. Petani tertarik untuk mengadopsi paket teknologi tumpangsari ini apabila hasil yang didapatkan lebih menguntungkan dibandingkan pola tanam monokultur jagung yang selama ini diterapkan oleh petani.Kata kunci: lahan kering iklim kering, keunggulan ekonomis, tumpangsari kedelai dengan jagung
, Nurwulan Agustiani, Indrastuti A. Rumanti
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 17-26; https://doi.org/10.21082/jpptp.v4n1.2020.p17-26

Abstract:
Stagnant flooding is a condition in swampy area and become constraints which causes decrease yield of rice. Therefore, it is necesarry of varieties that have tolerance to stagnant flooding. The purpose of this research were to analyze of agronomic and physiological characters of rice on stagnant flooding stress. The experiment was conducted at two environmental conditions in wet season of 2017/2018 in Sukamandi Experimental Station, Subang, West Java. A total of 10 genotypes (IR14D157, IRRI 119, IRRI 154, IR14D121, Inpara 3, Inpara 4, Inpara 8, Inpari 30, Tapus, and IR 42) were planted use Randomized Complete Block Design (RCBD) with 4 replicants. Variables consisted of growth (plant height, tillering, green leaves), stem elongation, nonstructural carbohydrate, chloropyll content, stem aerenchyma, yield component, and yield. The result showed that stagnant flooding caused an increase in plant height of 4% , stem elongation, and flowering. In addition, it was observed the decreased of tiller number of 50%, nonstructural carbohydrate, chloropyll content, productive tiller, spikelet number, % filled grain, and yield. Genotype of IR14D121 and Tapus showed the highest productivity, of 4,91 t/ha and 4,45 t/ha at stagnant flooding, at which productivity decreased up to 20% compared to the optimum condition.
Abdullah Taufiq, Afandi Kristiono, Andy Wijanarko, Agustina Asri Rahmianna, Rudy Iswanto, Salam Agus Riyanto
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 43-51; https://doi.org/10.21082/jpptp.v4n1.2020.p43-51

Abstract:
East Java Province supplies one third of the national peanut production. The farmland of peanut production centers in the region is a coastal area prone to salinity. The use of variety adaptive to salinity stress is an effective strategy to cope sainity problem and to optimize the use of salt-affected land. The aim of the research was to evaluate the adaptability of peanut varieties to salinity stress.The research was conducted in the 2018 dry season in the saline paddy field in Gesikharjo Village, Palang Sub District, Tuban Regency with EC 14.54 dS/m. The treatments consisted of seven groundnut varieties (Singa, Singa, Kancil, Takar 2, Bison, Hypoma 2, Tuban, and Jerapah), using a randomized complete design, four replications. Observations consisted of growth parameters, yield and yield components, proline and macro nutrient (N, P, K) content. The results showed that high salinity stress reduced seed germination, plant growth, yield components and yields of all varieties tested. Based on the ability to survive and yield, Singa variety have showing higher tolerance to salinity stress or more adaptive than other varieties, while the lowest one was found in Jerapah variety. The salinity tolerance of Singa variety did not indicate to be associated with high proline content, but it seem more related to the ability to absorb higher N, and keep K high to reduce negative effect of Na.
Enok Sumarsih, Ronnie S. Natawidjaja, Ajeng Silmi
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 4, pp 35-41; https://doi.org/10.21082/jpptp.v4n1.2020.p35-41

Abstract:
The research objective was to analyze the increase of rice production, income, and resource efficiency (land, labor, and capital use) of minapadi applicating “jajar legowo” plant spacing, a case in Sirnasari Village, Sariwangi Sub-District, Tasikmalaya Regency. The survey method was used in the research. 35 minapadi farmers applicating the jajar legowo plant spacing and 8 minapadi farmers implementing the tegel plant spacing were taken as samples from a population size of 78 farmers. Comparative descriptive analysis was used to determine differences in production, income and resources efficiency (the use of land, labor, and capital). Unpaired t-test was used to test differences in rice production and farmers’ income applicating the jajar legowo and tegel plant spacing. The results showed that minapadi applicating the jajar legowo plant spacing increased rice production, fish production, and farmers' income by 18.25, 32, and 40 percent respectively. The resources use of land, labor, and capital in minapadi applicating the jajar legowo plant spacing was more efficient than that of applicating the tegel plant spacing.
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 125-133; https://doi.org/10.21082/jpptp.v3n3.2019.p125-133

Abstract:
Effect of Insecticides to Brown Planthopper (Nilaparvata lugens Stal) Adaptation on Resistant Rice Varieties. Brown planthopper (BPH) (Hemiptera: Delpachidae) is one of major pests on rice cultivation in Indonesia. Resistant rice varieties and insecticides are commonly used by farmers in BPH management. But, BPH can rapidly adapt on long-term planted varieties and insecticide. The aim of research was to study the ability of insecticide resistance BPH in adaptation on resistant rice varieties. This study was conducted at Indonesian Center for Rice Research from October 2018 to June 2019. BPH’s were collected from farmer field and reared for 6th generation. BPH’s were divided into four insecticide population. BPH population sprayed each generation by BPMC (BPMC-BPH), imidacloprid (imidacloprid-BPH), pymetrozine (pymetrozine-BPH), and unsprayed (Control-BPH). In first generation, insecticide resistance conducted to obtain baseline data of BPH resistance to imidacloprid, BPMC and pymetrozine. On 6th generation, insecticide resistance test repeated to each population. Four BPH population were tested for the survival rate, fecundity, amount of honeydew, and rice varieties reaction. Result showed that Field population 1st generation were resistance to BPMC and imidacloprid with Resistance Factor (RF) 4.1 and 13.5-fold, respectively, while to pymetrozine was indicate resistance (RF 3.7-fold). In 6th generation, LC50 all insecticide population were increased, while in Control-BPH were decreased. Inpari 13 still effective againts BPH in all test results. Insecticide resistance-BPH tend to lower adaptation on resistant variety than insecticide susceptible-BPH.
, Awaludin Hipi, Eka Widyastuti
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 153-158; https://doi.org/10.21082/jpptp.v3n3.2019.p153-158

Abstract:
The interest of Indonesian farmers to grow soybean is relatively low because the price of soybean is not competitive and tend to be low. Therefore there is a need to increase the interest of farmers to grow soybean. One of them by increasing crop productivity through the use of the right planting system. This study aims to test the various doble row planting systems that is able to provide the best productivity for soybean and increase farmer's income. The research was conducted by demo farm method on 3 ha of farmer land in Ntuwu Lamba farmer group of Sambinae urban village of Bima. The experiment was design based on a randomized block design where there were 3 sowing distance treatments that were planted at 40 x 10-15 cm, double row system 60-30 cm x 10 cm, and double row planting system 40-20 x 10 cm. The result of the study showed that the double row planting system of 60-30 x 10 cm gave the highest yield on both agronomic and yield parameters. Financial analysis shows that jajar legowo of 60-30 x 10 cm resulting in the highest profit of Rp. 10.058.000/ha and R/C ratio of 2.47 and B/C 1.47.
Awaluddin Awaluddin, Ahdin Gassa, Nurariaty Agus
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 135-141; https://doi.org/10.21082/jpptp.v3n3.2019.p135-141

Abstract:
White stem borer Scirpophaga innotata Walkers is known as a species that always causes loss of rice yields in Indonesia and the Asia region and Australia. White stem borer attacks all stages of rice plant growth starting in the nursery until harvest. Until now, synthetic chemical pesticides are still a mainstay of farmers in controlling these pests. Then it is necessary to promote biological pest management, the use of biological agents is pest management technology because a save, economical and effective. Biological control through multiplication and parasitoid release needs to be focused on parasitoid it has adapted to the local environment. This study aims to examine the role of egg parasitoid S. innotata through the type and level of egg parasitization at various phases of rice plant growth. This research was conducted by collecting as many white rice stem borer eggs as possible based on the growth phase of rice plants, i.e. age 11-25 days after planting (DAP), 26-40 DAP, 41-55 DAP, 56-70 DAP, and 71-85 DAP. Observations were made by counting hatching and non-hatching eggs, as well as the type and number of parasitoids that appeared. The results show that the egg parasitoid found was Trichogramma japonicum Ashmead, Tetrastichus schoenobii Ferriere, Telenomus rowani Gahan. The highest level of egg parasitization is at 71-85 DAP.
, Nafisah Nafisah, Wage R. Rohaeni, Baehaki S. E., Sarlan Abdul Rahman, Jauhar Ali
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 111-116; https://doi.org/10.21082/jpptp.v3n3.2019.p111-116

Abstract:
Brown plant hopper (BPH) is one of the main pest of rice in Indonesia and it occurred every years with fluctuate acreage. BPH is also vector of Rice Ragged Stunt Virus (RRSV) and Rice Grassy Stunt Virus (RGSV). Green Super Rice (GSR) was designed to have resistance to major pests and diseases so that it need less pesticides and thus save ro environment. GSR was developed in IRRI and China and was tested in Indonesia since 2009 until now (2019). This research was aimed to study the genetic variability and heritability of 26 selected GSR lines to RRSV and RGSV along with four check varieties. The experiment was conducted in ICRR Sukamandi and Pusakanagara Experimental Station. The experiment was arranged following randomized complete block design with three replications. Transplanting was done into 21 days old seedling into 25 cm x 25 cm planting space of 1 m x 1 m plot. BPH and virus investation was occured narturally due to BPH outbreak along the season (DS 2010). Percentage of plant showing RRSV and RGSV symtom was measured as consideration the resistance of plant to the viruses. The results showed that the tested genotypes had high genetic variability and heritability classified as medium in the resistance to RGSV. The genotypes showed low genetic variability and heritability in the resistance to RRSV. It implies that breeder effort is feasible to develop resistant lines to RGSV. HUANGHUAZHAN and HHZ 12-Y4-Y3-Y1 are consistently resistant to RGSV and can be used as donors in further plant breeding activities. The selection of resistant individuals in populations of plant breeding material recommended to be done on earlier generations for RGSV and further generation for RSSV.
Enti Sirnawati
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 143-152; https://doi.org/10.21082/jpptp.v3n3.2019.p143-152

Abstract:
Tujuan penelitian ini adalah untuk menganalisa faktor penentu adopsi komponen teknologi Jarwo Super di tujuh lokasi implementasi kegiatan Jarwo Super yang dilaksanakan pada tahun 2016. Metode penelitian yang digunakan adalah deskriptif kualitatif melalui tabulasi silang dan analisa kuantitatif dengan menggunakan Structural Ecuation Model(SEM). Responden diambil secara purposive dari petani kooperator dan non-kooperator dari lokasi kajian, dengan jumlah petani di masing-masing lokasi sebanyak maksimal 40 responden. Petani non-kooperator yang djadikan responden berasal dari kelompok tani diluar poktan kooperator baik itu dalam desa maupun dari desa terdekat. Berdasarkan Analisa SEM dengan menggunakan software SMART-PLS, faktor dominan yang berpengaruh nyata terhadap adopsi komponen teknologi jarwo super di lokasi penelitian adalah lingkungan social petani, karakteristik inovasi komponen teknologi, serta kemampuan ekonomi petani.
Yoseph Yakob Da Rato, Syatrianty A Syaiful, Muhammad Riadi, Marcia B. Pabendon
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 159-164; https://doi.org/10.21082/jpptp.v3n3.2019.p159-164

Abstract:
The research is aimed at discovering the influence of harvesting time of primary plant and buds number on the growth and production of Ratoon Super-1 Sweet Sorghum. The research was held at Cereal Crops Research Institute (Balitsereal) in Maros, South Sulawesi, from September 2017 to January 2018. It used ratoon plants from previous research that planted using super-1 sorghum variety seeds. This research was arranged based on split-plot-design with three replications. Main plot was numbers of ratoon buds (T) after harvesting the primary plants i.e : 1 (one) ratoon buds (T1), 2 (two) ratoon buds (T2), 3 (three) ratoon buds (T3), 4 (four) ratoon buds (T4) and 5 (five) ratoon buds (T5), while sub plot was harvesting time of primary plants i.e : 102 DAP (P1), 109 DAP (P2), 116 DAP (P3) and 123 DAP (P4). Every treatment combination repeated three (3) times to form 60 experimental plots. Interaction of ratoon with 3 buds and harvest of primary plant at 123 DAP reached the largest stem diameter (15,14 mm), the heaviest total biomass (28,43 tons/ha) and stem biomass (20,75 tons/ha), the highest juice volume (1274,33 L/ha) and the highest 90% ethanol content (415,00 L/ha).
, Memen Surahman, Abdul Qadir, Giyanto Giyanto
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 117-124; https://doi.org/10.21082/jpptp.v3n3.2019.p117-124

Abstract:
Swamp land ecology is a potential land to increase the crop production, especially rice. The research was aimed to increase the production and seed quality of IPB 3S rice variety in swamp land ecology. The research was arranged in Factorial Randomized Complete Block Design with three replications. The first factor was dose of Zinc, consist of 0 kg ha-1, 15 kg ha-1, 30 kg ha-1, and 45 kg ha-1. The second factor was seed treatment by probiotic microbial, consist of control, Bacillus sp, Bacillus sp (+), Chromobacterium sp, Chromobacterium sp (+). Zinc fertilization couldn’t increase the yield characters and seed quality of IPB 3S rice variety. Microbia fertilization could increase the highest yield characters (plant height, tillers, productive tillers, panicle length, weiht per plant, and seed weight per grove), and Bacillus microbial increased the seed quality (Vigor index). Interaction of zinc fertilization (15 kg ha-1) and Chromobacterium increased the yield characters (flag leaf length, panicle length, and seed weight per grove), and the interaction of zink fertilization (30 kg ha-1) and Bacillus increased seed quality (vigour index).
Laila Nur Milati, Bambang Nuryanto
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 61-66; https://doi.org/10.21082/jpptp.v3n2.2019.p61-66

Abstract:
Sheath blight disease, one of the most important diseases in rice, is caused by the fungus Rhizoctonia solani. The aim of the study was to find out the response of rice plant in different growth stages against R. solani infection. This research was performed during the dry and rainy seasons of 2017. The experiment used split plot design with four replications. The main plot was rice varietie (Ciherang, Minghui 63, and Hipa Jatim 2) and the sub plot was the inoculation times (maximum tillering, panicle initiation, flowering, and ripening). Rice cultivation wasperformed following the farmers practiceon 1000m2 areas devided by 60 experimental plots, 3m x 5m each. Data analysis and interpretation were performed using scatter chart and SAS 9.0. The results showed that sheath blight developed significantly and affected area under the disease progress curve (AUDPC) during maximum tillering (56,67% in dry season and 56,02% in rainy season) and panicle initiation stages (79,07% in dry season and 56,85% in rainy season). The larger the AUDPC the higher the decrease in the rice production.
Zaqiah Mambaul Hikmah, Gagad Restu Pratiwi
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 75-81; https://doi.org/10.21082/jpptp.v3n2.2019.p75-81

Abstract:
Cropping systems is one of the efforts to increase the yield of rice through the manipulation of plant spacing. Legowo rows is one of the methods in manipulating population to increase yield. However, high population with dense plants causes risk to fall when the rainy season. The purpose of this research is to know the effect of cropping system, seedling age, season on the growth and yield of Inpari 31. This research was conducted at Sukamandi for 2 seasons,in 2015 to 2016. Using a split-split plot design with the main plot of the season that is the dry season and the rainy season, planting system is sub plot with 3 levels : tegel, legowo 2:1, and 4:1. The age seedling is sub sub plot. The variable consisted tall of plant, number of tiller, and yield. The results showed that the age, plant spacing, season influenced the results significantly. The yield of age 20 DAS (day after sowing) higher than 30 DAS. During the dry season the yield was higher compared with the rainy season. In the dry season, the yield of legowo 2:1 was higher (7.69 tons/ha GKG) compared to legowo 4:1 and tegel (6.77 tons/ha GKG). However, the application of the planting system does not have a significant effect on increasing yieldsin rainy season.
, Aminah Aminah, Sujak Saenong, Amran Muis
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 91-99; https://doi.org/10.21082/jpptp.v3n2.2019.p91-99

Abstract:
Maize Downy Mildew caused by pathogenic fungus of Peronosclerospora philippinensis is an important disease in centers of maize crops outside Java Island. Research on “The Appearance of Maize Downy Mildew Caused by Pathogenic Peronosclerospora philippinensis in Combination Treatment of Resistant Varieties and Metalaxyl Fungicide ” aimed to determine the effectiveness of a combination of fungicide treatment of active ingredients of metalaxyl with varieties that have resistance to Maize Downy Mildew which was caused by P.philippinensis species. This research was conducted at KP Bajeng (endemic area of Maize Downy Mildew of P. Philippinensis species), which was compiled in Separate Plot Design with 3 replications. The main plot contained 5 varieties of maize, namely: (1) Bima-3 Bantimurung, (2) Bima-20 URI, (3) Lagaligo, (4) Bima-15 Sayang, and (5) Anoman. On the other hand, the sub plot contained 5 levels of seeds treatment dose with Metalaxyl Fungicide Active Ingredient (0 g/kg, 2 g/kg, 3 g/kg, 5 g/kg, and 7 g/kg of maize seed). The results showed that the combination of resistant and susceptible varieties with Metalaxyl Active Ingredient at doses of 2g, 3g, 5g and 7g/kg of maize seed controlled the Maize Downy Mildew which was caused by the Peronosclerospora philippinensis species effectively. It was shown by the low reaction of Maize Downy Mildew infection, at the percentage of 0% -1,86%, respectively. Under the circumstances of susceptible varieties without Metalaxyl Active Ingredient treatment, the intensity of Maize Downy Mildew reached the percentage of 100%. The lower intensity was also followed by the production, cob length and weight of 1000 seeds that were higher than those of control treatment.
Slamet Bambang Priyanto, Andi Takdir` Makkulawu, R Neni Iriany
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 83-90; https://doi.org/10.21082/jpptp.v3n2.2019.p83-90

Abstract:
Informasi tentang daya gabung sangat penting dalam perakitan jagung hibrida. Salah satu metode pendugaan daya gabung adalah metode line x tester. Penelitian ini bertujuan untuk mengetahui daya gabung umum (DGU) dan daya gabung khusus (DGK) galur jagung. Percobaan dilaksanakan di Kebun Percobaan Bajeng Sulawesi Selatan pada bulan Agustus sampai November 2016. Bahan genetik yang digunakan adalah 60 hibrida hasil persilangan 30 galur S7 (G682-G711) dengan dua tester MR 14 dan N79. Perlakuan disusun dalam rancangan acak kelompok (RAK) dengan tiga ulangan. Karakter yang diamati adalah tinggi tanaman, tinggi letak tongkol, rendemen, kadar air, panjang dan diameter tongkol, jumlah baris per tongkol, jumlah biji per baris, bobot 1,000 biji, dan hasil biji pada kadar air 15%. Estimasi efek DGU line, DGU tester, dan DGK menggunakan perangkat lunak AGD-R (Analysis of Genetic Designs in R) Version 3.0. Hasil penelitian menunjukkan bahwa galur yang memiliki nilai DGU positif dan nyata pada karakter hasil biji adalah G682, G686, G695 dan G704. Nilai DGK positif dan nyata pada karakter hasil biji hanya terdapat pada satu pasangan persilangan yaitu G685 x N79. Kata kunci: daya gabung, jagung hibrida, metode line x tester
, Jubaedah Jubaedah, A. Dariah
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 67-74; https://doi.org/10.21082/jpptp.v3n2.2019.p67-74

Abstract:
The opportunity to improve upland rice production on acid mineral soil is still high. However, the main problem of this soil is high soil acidity that inhibit crop growth, causing low production. The objective of this study was to evaluate the effects of agricultural waste biochar application on upland rice (Oryza sativa L.) productivity and improvement of acid mineral soil properties. The study was conducted at Agricultural Research Station of Tamanbogo, East Lampung on July-October 2013 (session 1), December 2013-April 2014 (session 2), May-August 2014 (session 3) and October 2014-February 2015 (session 4). The experimental design was split plot design, which the main plots were two types of biochar (cacao shell and rice husk), the sub plots were biochar rates (0; 5 t/ha and 15 t/ha) with five replications. The parameters measured were upland rice growth, yield and soil properties (Bulk density, soil pH and Al3+). The result showed that during the four planting seasons, the addition of cocoa shell biochar resulted better response on upland rice growth and yield compare to rice husk biochar, with crop yield of 2.54-3.97 t/ha dry grain. The dose of 5 and 15 t/ha biochar provided a stable yield and improvement of dry grain around 74.02-179.4% compare to no biochar addition for three consecutive sessions. The cocoa shell biochar applications showed better response on soil acidity (increase soil pH and reduce Al3+ ) and soil bulk density compared to rice husk. In degraded acid mineral soil, upland rice productivity and soil properties improvement can be increased by adding of 15 t/ha cacao shell biochar with a dose of 15 t / ha for getting dry grain more optimal.
Koesrini Koesrini, Muhammad Alwi, Muhammad Saleh
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 53-59; https://doi.org/10.21082/jpptp.v3n2.2019.p53-59

Abstract:
Farmers cultivated rice once a year during the rainy season uses Cilosari variety with low yield (2.35 t/ha) in Matang Danau Village, Paloh Sub District, Sambas District, West Kalimantan Province. Increasing cropping index could be done by water pumping in dry season planting and using high yield adaptable varieties. The purpose of this research was to evaluate the adaptability and performance yield of highly rice variety in swamp lands West Kalimantan Border Area. The field experiment was carried out in Matang Danau village, Paloh Sub District, Sambas District, West Kalimantan Province, in the dry season from Maret to July 2018 and in the wet season from Oktober 2018 to February 2019. The research was arranged in randomized completely block design, with 3 replicates. The varieties tested, i.e., Inpara 1, 2, 3, 4, 6, 8, 9, Inpari 32, and check varieties Margasari and Cilosari. The results of the varieties adaptation test showed that there were differences in adaptation of varieties tested in swamps. Based on the results of the Inpara 1 variety, the highest yield was 6.6 t/ha, while the other varieties produced between 3.98-5.90 t/ha. The highest increasing yield compared to the varieties Margasari and Cilosari, i.e. Inpara 1. The increasing yield of rice in rainy season planting was higher 89,4% than that of the dry season.
, Andy Wijanarko, Afandi Kristiono, Siti Mutmaidah, Nila Prasetiyaswati, Jumakir Jumakir
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 101-110; https://doi.org/10.21082/jpptp.v3n2.2019.p101-110

Abstract:
Lahan pasang surut merupakan lahan potensial dan telah ditetapkan menjadi target untuk pengembangan komoditas padi, jagung, dan kedelai. Produktivitas kedelai >2 t/ha pada agroekologi tersebut dapat dicapai dengan teknik budidaya yang baik. Tujuan penelitian adalah adalah untuk mengevaluasi efektivitas, kelayakan teknis dan finansial teknologi budidaya kedelai pada lahan pasang surut (KEPAS). Penelitian dilaksanakan pada lahan pasang surut tipe C di Jambi seluas 40 ha dan Kalimantan Selatan seluas 11 ha pada tahun 2018. Komponen teknologi KEPAS yang utama adalah penggunaan varietas Anjasmoro, saluran drainase setiap 2,5-3 m, ameliorasi lahan dengan 750 kg/ha dolomit dan 1 t/ha pupuk organik, serta pemupukan 150 kg/ha Phonska dan 100 kg/ha SP36. Hasil penelitian menunjukkan bahwa teknologi KEPAS efektif untuk budidaya kedelai pada lahan pasang surut dengan tingkat hasil 1,8-2,8 t/ha di Jambi dan 1,4-3,2 t/ha di Kalimantan Selatan. Teknologi KEPAS secara teknis layak, dan juga menguntungkan yang diindikasikan oleh nilai R/C ratio>1 pada hampir semua petani kooperator. Meskipun demikian, tingkat kelayakan finansial beragam dari tidak layak hingga layak yang diindikasikan oleh nilai B/C ratio 0,58-1,49 di Jambi dan 0,04-1,47 di Kalimantan Selatan. Teknologi KEPAS secara finansial layak pada tingkat produktivitas setidaknya 2,3 t/ha. Tingkat kelayakan finansial teknologi KEPAS berpeluang dapat ditingkatkan melalui mekanisasi pada kegiatan penanaman, serta panen dan prosesing.
Santoso Santoso, , , Anggiani Nasution
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 1-8; https://doi.org/10.21082/jpptp.v3n1.2019.p1-8

Abstract:
Manokwari and South Manokwari Regency is one of the rice development areas in West Papua. Planting of lowland rice in Manokwari and South Manokwari always infect by blast disease. The use of resistant varieties is a major component in controlling blast disease and is the most effective, economical, and easy way for farmers. The use of blast resistant varieties is limited by space and time; in this case the use of resistant varieties must be adjusted to the composition of the P. grisea races in the area. Until now there has been no isolation and identification of P. grisea races that developed in Manokwari and South Manokwari Regency. The study aimed to identify the composition of P. grisea races in Manokwari and South Manokwari areas. The research was carried out in the laboratory and greenhouse of the Muara Bogor Experimental. Isolation and identification of race P. grisea was carried out in 2017. The results showed that the results of P. grisea isolation using monoconidia obtained 34 isolates, which were obtained from the Prafi, Masni, Oransbari and Sidey Districts. Race identification of P. grisea was obtained by 9 race groups namely race 211, 213, 241, 251, 253, 313, 333, 353 and race 373, which were dominated by race 333 as much as 41.18% and race 373 by 33.35%. The P. grisea races obtained are races that have a high virulence level.
Abdul Wahab, A. M. Adnan, Sarjoni Sarjoni, Siti Rahmah Karimuna
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 32-34; https://doi.org/10.21082/jpptp.v3n1.2019.p32-34

Abstract:
Soybean consumption continues to increase along with the increase in population, so most must be imported because domestic production is insufficient. According to the Agricultural Research and Development Agency (2007) to meet domestic soybean needs to suppress imports, an increase in planting area of 7.25% is needed per year. This study aims to obtain a site-specific fertilizer technology package to support the development of soybeans on dry land in Southeast Sulawesi. This research was conducted in Ahuanguria Village, Baito District, South Konawe Regency, Southeast Sulawesi Province. The activity starts from January to December 2017, using a Randomized Block Design (RBD) with each of the 5 fertilization technology packages, consisting of 225 kg NPK / Ha + 25 kg urea / ha + organic fertilizer 2 t / ha + dolomite 0.65 t / ha; NPK 200 kg / ha + urea 25 kg / ha + organic fertilizer 2 t / ha + dolomite 0.65 t / ha (recommendation); NPK 175 kg / ha + urea 25 kg / ha + organic fertilizer 2 t / ha + dolomite 0.65 t / ha; NPK 150 kg / Ha + urea 25 kg / ha + organic fertilizer 2 t / ha + dolomite 0.65 t / ha; and control (existing technology). The application of location-specific fertilization technology packages on acidic dry land soybean plants significantly increased soybean growth and yield compared to controls. The treatment of NPK 225 kg / ha + urea fertilization package 25 kg / ha + organic fertilizer 2 t / ha + dolomite 0.65 t / ha shows the yield per hectare is 1.40 tons.
I Gusti Made Subiksa
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 23-30; https://doi.org/10.21082/jpptp.v3n1.2019.p23-30

Abstract:
Abstrak Penelitian pengaruh pembenah tanah organomineral terhadap sifat kimia tanah dan pertumbuhan tanaman jagung pada lahan kering masam telah dilakukan di Kebun Percobaan Balai Besar Mektan di Serpong Tanggerang. Penelitian bertujuan untuk menguji efektivitas formula pembenah tanah organomineral untuk perbaikan sifat kimia tanah mineral masam dan meningkatkan pertumbuhan tanaman. Penelitian menggunakan rancangan acak kelompok dengan 8 perlakuan dan 3 ulangan. Perlakuan terdiri dari kontrol tanpa pupuk dan amelioran, NPK standar, 5 tingkat dosis pembenah tanah organomineral (OM) dan dolomit. Hasil penelitian menunjukkan bahwa pembenah tanah OM dapat meningkatkan pH tanah masam dan menurunkan kelarutan unsur beracun Al. Perlakuan dolomit 1,5 t/ha menunjukkan pengaruh paling besar dalam perbaikan sifat tanah, namun pembenah tanah OM 2 t/ha menunjukkan hasil yang hampir sama. Perbaikan sifat kimia tanah diikuti dengan pertumbuhan tanaman yang lebih baik jika dibandingkan dengan perlakuan NPK rekomendasi. Perlakuan pembenah tanah OM meningkatkan pertumbuhan tanaman dan diikuti peningkatan produksi jagung pipilan. Peningkatan produksi jagung sebesar 15,7% diperoleh dengan perlakuan pembenah tanah OM sebanyak 2 t/ha. Pertumbuhan dan produksi maksimum tanaman jagung dapat diperoleh dengan aplikasi pembenah tanah organomineral dengan dosis 1.750 kg/ha. Abstract Research of the effect of organomineral soil amendment formula to the soil chemical properties and the growth of maize on acid upland was carried out at the Experimental station of the Center for Agricultural Mechanization Research and Development in Serpong Tanggerang. The objectives of the study is to examine the effectiveness of organomineral soil amendment formula to improve the soil chemical properties of acid upland and improve plant growth. The study used a randomized block design with 8 treatments and 3 replications. The treatment consisted of controls without fertilizers and ameliorants, standard NPK, 5 dose levels of organomineral (OM) soil amendment and dolomite. The results showed that OM soil amendment can significantly increase soil pH and reduce the exchangeable aluminium, a toxic element to plant growth. Dolomite treatment of 1.5 t/ha showed the best effect in improving soil properties, but OM soil amendment 2.0 t/ha showed almost the same results. Improvements in soil chemical properties were followed by better plant growth compared to NPK treatment as a benchmark. OM soil amendment treatment gradually increased plant growth and followed by increased shelled grain corn. The increase of shelled grain corn yeild by 15.7% was obtained by applying OM soil amendment as much as 2 t/ha. Base on the yield curve, the maximum growth and yield of corn can be obtained by applying organomineral soil amendment at a dose of 1,750 kg/ha.
Muhlis Ardiansyah, Yomin Tofri
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 17-22; https://doi.org/10.21082/jpptp.v3n1.2019.p17-22

Abstract:
Angka resmi data produktivitas padi di Indonesia diperoleh dari Survey Ubinan yang dilakukan oleh BPS. Kendala utama dalam pelaksanaan survei ini adalah terlewatnya masa panen dari sampel petani terpilih, alat pengubin yang terlalu berat, dan menyita banyak waktu dalam pelaksanaannya. Pada penelitian ini, akan dicari solusi baru untuk mengatasi kendala tersebut yaitu dengan wawancara pascapanen. Penelitian ini bertujuan untuk menjawab pertanyaan apakah pelaksanaan Survei Ubinan dapat diganti dengan wawancara pascapanen. Metode yang digunakan adalah dengan Paired Samples T-Test dan korelasi Pearson Product Moment. Variabel yang diperbandingkan ada dua yaitu produktivitas padi hasil wawancara pasca panen yang diperoleh dari SUTAS2018 dan produktivitas padi hasil survei ubinan yang diperoleh dari SUB2017 dan SUB2018. Hasil penelitian ini ada dua. Pertama, pendugaan produktivitas dengan metode wawancara pascapanen terbukti underestimate dibanding produktivitas padi hasil Survei Ubinan. Kedua, tidak cukup bukti untuk mengganti metode Survei Ubinan dengan wawancara pascapanen. Temuan ini bisa dinaikkan menjadi sebuah teori bahwa teknik wawancara suatu survei pada variabel penghasilan atau produksi maka responden akan memberi jawaban yang underestimate.
Jefny Markus Rawung, ,
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 35-42; https://doi.org/10.21082/jpptp.v3n1.2019.p35-42

Abstract:
Soybean ICT was designed base on success story of rice field ICT experience. The research aim to describe farmers opportunity of technology adoption accelerationin case study of Soybean ICMin South Sulawesi. The research has done in FY 2015, with 30 adopters participants as respondent. Data analysis uses binary logistic regression approach which lag adoption as dependent variable and others 12 variables as independent variable, namely: ages, formal education base, land property status, farming system scale, distance from nearest information source and information pathway. The research reveals that: (1) Threre were variation of farmer appreciation of soybean technology, (2) Technology adoption lag as acceleration proxy, shown about 1 – 4 years since he knows technology to technology adoption, (3) There are 5 partial independent variable influence of adoption acceleration, namely farm size, long distance of farm location to house, IATAD, technology source, and land status, (4) opportunity of soybean farmers occur one time if there are adding soybean harvest for 1 hectar. 6’s time for farm location wich more close to house farmers. In other hand, farmers adoption gradually occur since distance location of farm tend relatively far to technology information source. The technology guidance with participative and market price policy for acceleration of adoption innovation, are needed.
Abdullah - Sarijan, M. Surahman, A. Setiawan, Giyanto Giyanto
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 43-52; https://doi.org/10.21082/jpptp.v3n1.2019.p43-52

Abstract:
The research was aimed to enhance growth and seed production of Jack Bean by NPK and organic liquid fertilizer. The research was carried out from May to October 2016 in Purwasari village, Dramaga, Bogor and be continued by seed testing (Desember 2016) at Seed Testing Laboratory, Bogor Agricultural Institute. The research was arranged in Randomized Block Design 2 factors. The first factor is NPK fertilizer (Urea, SP-36, KCl), consists of 3 levels (0 kg ha-1as control, 25: 50: 56.25 kg ha-1, and 50: 100: 112.5 kg ha-1). The second factor is liquid organic fertilizer, consist of 2 levels (0 ml per liter of water and 2 ml per liter of water). There was no interaction between NPK and liquid organic fertilizer for the growth, production, and quality of seeds. The singly NPK and liquid organic fertilizer effected several variables. The highest seed production 4.17 tons ha-1. The 1000 grain weight produced is classified as medium to large sized seeds (> 1000 g 1000 seeds-1) and has a percentage of germination above eighty-five percent.
Bhakti Priatmojo, I Putu Wardana, Made Oka Adnyana
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 3, pp 9-15; https://doi.org/10.21082/jpptp.v3n1.2019.p9-15

Abstract:
Jajar Legowo Technology Super (Jarwo Super, JS) is an integrated rice cultivation technology on irrigated rice field based on jajar legowo 2:1 to improve rice yield by utilizing the influence of the border effect. Jajar legowo 2: 1 is difined as crops placement technique that every two rows of rice plants followed by one blank row and repeted for next rows). Part of the Jajar Legowo Super Technology component are: 1) New Superior Varieties (VUB); 2) bio-decomposer; 3) bio-fertilizers; 4) bio-pesticides and innorganic pesticides; and 5) agricultural equipment and machinery. The purpose of this study was to determine the technical feasibility, financial feasibility, and sensitivity performance of jarwo super technology (JS) rice farming at the farmer level compared to farmers who applied conventional rice cultivation or non-jarwo (NJS) technology. The research was carried out in three provencies in Sumatera such as: Aceh Province, North Sumatra and South Sumatra Province. Increased rice productivity in Aceh province is 31%, South Sumatra 37% and North Sumatra 12%. JS financial analysis of total revenue, allocation of JS cultivation cost is about 37.19% and NJS farmer 43.59%, with R/C ratio 2,69 for JS farmers, while for NJS R/C 2,29. Meanwhile, B/C ratio 1,69 for JS farmers and 1.29 for NJS farmers. The value of MBCR of introduced super jarwo technology is 5,25 which means the introduction of super jarwo technology is worth pursuing because with addition production costs of Rp 1 million can increase profits worth of Rp 5.25 million. According to BEP value the JS farmers will experience a loss if the decrease in yield is higher than 63% and the NJS farmers obtain lower tolerance with 56%. The results of sensitivity analysis with various scenarios showed that super jarwo farming still provides an adequate level of profit even though it tends to decrease.
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