Journal Jurnal Penelitian Pertanian Tanaman Pangan-
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 9-15; doi:10.21082/jpptp.v2n1.2018.p9-15
Abstract:The impact of deltamethrin on natural enemies can be determined directly through contact and oral applications or indirectly through residues on plants. This research was aimed to determine the indirect impact of deltamethrin on the egg parasitoid of Anagrus nilaparvatae. The rice plants of Cisadane variety were infested with 10 gravid females of N. lugens. Deltamethrin was applied at two concentrations (12.5 and 6.25 ppm) and at 7, 3, 1 day and 3 hours before the parasitization. Deltamethrin residues on rice plants were decrease the number of Nilaparvata lugens, parasitoid and parasitization level of A. nilaparvatae. This suggests that deltamethrin residue on rice plants could decrease the role of A. nilaparvatae in controlling N. lugens.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 43-49; doi:10.21082/jpptp.v2n1.2018.p43-49
Abstract:Maydis leaf blight disease caused by Bipolaris maydis can attack corn plants in the vegetative and generative phase and can reduce yield up to 70%. Biological control of plant diseases with the use of biopesticides alone or in combination with other botanical materials can be efficient because it is easy to obtain, cheaper price, also environmentally friendly. The objective of the study was to obtain a combination of B. subtilis formulation with a botanical pesticide which has the potential to control the growth and development of maydis leaf blight. In addition to this, we also observed the effect of the application of the combination of botanical pesticides and B. subtilis formulation on plant growth. The study was conducted on February till June 2016 at the Plant Pathology Laboratory of ICERI with a complete randomized design and the Bajeng Experimental Farm using a randomized block design. In vitro testing, the treatment with vegetable pesticide of clove leaf extract gave better results in suppressing B. maydis. Similarly, in field testing, the application of B. subtilis formulation combined with clove leaf extract also gave a better effect in suppressing the development of maydis leaf blight disease and increasing yield. Applications of B. subtilis formulation can suppress maydis leaf blight disease by up to 13% and potentially increase yield by 26%.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 1-8; doi:10.21082/jpptp.v2n1.2018.p1-8
Abstract:Site Spesific Nutrient Management/SSNM (Pemupukan Hara Spesifik Lokasi/PHSL) recommendation for rice can be obtained from the website of Indonesian Rice Consultation Service (http:/webapps.irri.org>lkp). This program was developed by International Rice Research Institutes (IRRI) in collaboration with Indonesian Agency for Agricultural Research and Development (IAARD). The objective of this study is to evaluate the PHSL recommendation for rice through adaptive research approach. This research was conducted in two sites (Ngawi and Jember) during the dry season (April to July) 2014. Three fertilizer recommendations ware evaluated : (i) PHSL recommendation for hybrid rice (Mapan P05 variety), (ii) PHSL recommendation for inbred rice (Ciherang variety) and (iii) fertilizers practiced by farmer for inbred rice (Ciherang variety). PHSL recommendation which assessed from the website with the yield target of 8 t/ha for Ngawi was 200 kg/ha Phonska applied at 0-14 days after transplanting, 125 kg Urea/ha applied at 24-28 days after transplanting and 200 kg Urea/ha applied at 38-42 days after transplanting. For Jember, rate of Phonska was higher (250 kg/ha) while rate of Urea was same with Ngawi. The three fertilizer recommendations were applied by each farmer with 10 cooperator farmers as replications. The observations included soil analysis before conducting the research, fertilizers used by cooperator farmers, yield of rice and benefit analysis. Fertilizer used by 10 farmers in Ngawi showed : (i) 7 farmers applied fertilizers two times and only 3 farmers applied three times, (ii) all farmers used organic fertilizer from 220 to 940 kg/ha, (iii) all farmers used Phonska fertilizer and applied two times, (iv) total of fertilizers applied ranged from 700 to 1,000 kg/ha. While total fertilizers of PHSL recommendation was only 475 kg/ha. The similar observations were observed in Jember, but all farmers applied fertilizers two times. Research results showed that compared to farmer’s practice, PHSL recommendation saved 26.83 kg N/ha, 55.23 kg P2O5/ha and 36.05 kg K2O/ha in Ngawi. In Jember, PHSL recommendation did not save N but saved 34.2 kg/ha P2O5 and 16.6 kg K2O/ha. Yield of inbred rice with PHSL recommendation was not different, however, yield of hybrid rice was higher to that of farmer’s practice. It can be concluded that PHSL recommendation save fertilizers with no yield decrease for inbred rice, or even, increased yield of hybrid rice It’s means PHSL recommendation increase fertilizer-used efficiency and rice farming benefit.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 35-42; doi:10.21082/jpptp.v2n1.2018.p35-42
Abstract:The research was conducted in Solokuro Village, Lamongan Regency, East Java, from September 2016 to January 2017. It aimed to know the competitiveness of advanced hybrid line of NASA 29. Genetically, the advanced hybrid line of NASA-29 has the superiority in the number of cob compare with the dominant varieties that planted by farmers.The result of the preliminary adaptation study indicated that the prolific charateristic reaches 70%, but in the Solokuro Village, Lamongan Regency just reach 10% due to drought stress at the beginning of growth, but the other superiority such as the size of cobs, good pollination and sturdiness stems are more superior then dominant existing varieties. Yield potential was equaled with several varieties such as DK-959 and BISI-2, even more than the varieties of PAC-339 and NK-33, so that NASA-29 is economically and profitably. Ratio revenue and cost of NASA-29 highest than other varieties. Then the farmers’ preferences on cob zise and yield potential of Nasa-29 are better than existing varieties. Therefore, NASA-29 has a prospect to developing in the future.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 59-66; doi:10.21082/jpptp.v2n1.2018.p59-66
Abstract:Implementation of soybean production technology of specific location with using high quality seeds of superior varieties is one of the important factors for achieving increased production of soybeans. This assessment was aimed to determine the effect of assembly seed production technology to yield, feasibility of seed breeding and viability. The experiment was conducted in lowland KP. Mojosari, Mojokerto regency which was held on dry season I 2013. Randomized experimental design with 6 replications in an area of 1.0 hectares was used in the experiment. The treatment consisted of five varieties, namely : (a) Anjasmoro, (b) Argomulyo, (c) Kaba, (d) Sinabung, and (e) Argomulyo (Farmer). Assessment of seed storage technology was conducted at Laboratory of Seed of AIAT East Java for 8. The result of study showed that the highest productivity was found in soybean medium seed type, namely Kaba varieties (2,41 t/ha of consumption seed and 1,96 t/ha labeled seed) and Sinabung (2,39 t/ha of consumption seed and 1,90 t/ha labeled seed) with each R/C value of 2,18 and 2,12 respectively, so that the seed breeding using the recommendation technology is economically feasible. The treatment of drying of large seed type (Anjasmoro and Argomulyo) and medium seed type (Kaba and Sinabung) had the viability > 80% with the retention period until the eighth month when the seeds are dried each 1 month with moisture content 80% which only occurs until the fourth month.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 25-34; doi:10.21082/jpptp.v2n1.2018.p25-34
Abstract:In vitro selection using of salt (NaCl) has been used to select plants that tolerate salinity, so that effective selection process. The purpose of this study was to obtain information about the mechanism of salinity tolerance in rice in vitro conditions. This study consisted of two experiments, they are the selection of salinity tolerance somaclone putative mutants in vitro and study of salinity tolerance mechanism results in in vitro selection. The tolerant plants after being treated NaCl show response to the accumulation of proline is more, the content of K, Mg and Ca which tends to remain and Na content is lower, stomata density is fewer and the length and width ratio stomata is greater.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 51-57; doi:10.21082/jpptp.v2n1.2018.p51-57
Abstract:Soybean production at farmer level is still low, which ranges between 0.6-2.0 ton ha-1and average of 1.3 ton ha-1. Meanwhile, yield potential shows up to 3.0 ton ha-1. This big yield gap present an opportunity to increase yield through productivity approach, as well as other treatment including the use of inorganic and bio-fertilizers. An experimet has been executed to observe the production of 3 soybean varieties as affected by inorganic fertilizer and bio-fertilizer. The experiment was implemented at the Sugihan village, of the sub-district of Toroh, at Grobogan district, Central Java, in June – Sept 2014. The experiment was arranged in nested design with 2 factors, namely fertilization and variety, and in 3 replications. Three levels of fertilization were (1) Control (= ½ Recommended dose, i.e.Urea (25 kg ha-1), SP-36 (50 kg ha-1), and KCl (50 kg ha-1), (2) Fertilizer A (= Control + F-1 Biofertilizer), and (3) Fertilizer B (=Control + commercial biofertilizer). Meanwhile, varieties of soybean used were Grobogan, Gema and Dering. The trials were implemented in 2 lands with different history, i.e. former land of rice plants that are subjected to site-specific nutrient fertilization (PHSL) and former land of rice plants with farmer treatment (Non-PHSL). The result showed that there is no significant difference caused by interaction between variety and fertilizer factors. Soybean variety was found to be main factor determining production level, while fertilizer treatment showed no significant effect on yield. The highest production (observed through square plot method) was found from Grobogan variety. Weight of 100 grain was identified as yield component with strongest correlation to soybean yield.
Published: 16 May 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 2, pp 17-24; doi:10.21082/jpptp.v2n1.2018.p17-24
Abstract:Rice plants are strategically commodities as food supplied in Indonesia. The operated, provided, procurement and distribution under be incredibly important to food security, stability of national economy and to increased income of farmers. Rice In addition created to required rice as food / special functional. Needed production of rice that has added value (certain prices, nutrition scent, etc) or contained one or more components with particular physiological functions and useful for health. The development problems of rice with particular characteristics / special are reluctanced at farmers to planted or produced different between regions because it is dependent of climate, agroekosistem and the market. The experiment was aims to studied the cultivated technology of special rice variety at farmer’s lowland field, at the Cianjur district, West Java, in April – September 2016. The experiment was arranged as a split-split plot design with 3 replications. The main plot are fertilizer application, P1- the present local recomendation (45 kg N, Phonska ( 100 kg N, 125 kg P2O5 75 kg K2O; Pupuk organik (petrokimia) = 500 kg/ha), applied 1x at 14 days after transplanting. P2 – proposed recommended based on PHSL, 112,5 kg N dan Phonska (83,33 kg N, 104,2 kg P2O5 dan 62,50 kg K2O, applied 3 x at 7 dat, 21 dat and 42 dat (just before flower initiation stage). Sub plot: plant spacing T1 – a Legowo 2:1 (27 cm--50 cm x 13.5 cm); and T2 – legowo system 4: 1 ( 27cm - - 54 cm ) x 13,5 cm Sub-sub plot: special rice varieties V1- Cisokan,, V2- Inpari 21, V3- IR-42, V4- Lusi variety and V5 - Japonica rice (Tayken rice). The smallest plot (sub-sub plot) size was 4 m x 5 m, with the total number of plots was 60.Performance of the special rice varieties could be increased through optimalization of plant spacing and fertilizer application. The highest grain yields in the season was 9.80 ton grains/ha by Inpara 4 planted combination with jajar legowo 4:1 and the present local recommendation fertilizer, followed by Lusi variety (9.33 ton grains/ha) with combination the jajar legowo 4:1 and recommended based on PHSL, than Cisokan variety produced 9.24 ton grains/ha with combination legowo system 4: 1 and present local recommendation fertilizer. Application of fertilizer and plant spacing are significantly which were the highest yield. There was effected on yield produced . 8,50 ton grains/ha, at jajar legowo 4:1 planted highest 0,5 ton grains/ha than jajar legowo 2:1 produced 8,03 ton grains/ha.
Published: 3 March 2018
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 1; doi:10.21082/jpptp.v1n1.2017.p29-36
Abstract:Seed is an important input component in rice production. Of the many varieties that had been release, the distinction among varieties is not always clear. Among a large number of varieties error may happen in seed processing, storage and distribution, because of the similarity of their physical shape and size, and the seed appearances are difficult to be distinguished. An alternative to distinguish rice seed varieties is using near infrared (NIR) as sensors and using artificial neural network (ANN) as data processor. This research was aimed to study the accuracy of NIR spectroscopy and ANN for detecting rice seed varieties. NIR reflectances (1000-2500 nm) of seeds of 12 varieties were given pretreatment data such as first derivative, second derivative, normalization and standard normal variates. The pretreatment data were used as input in ANN models. Each variety consisted of 12 samples, each sample was 40 grams. ANN model used backpropagation multilayer perceptron with three layers as input, hiden, and output. Network weights were estimated using gradient descent algorithm. The wave form of NIR spectra was similar among varieties, but had different absorptions in intensities, so they could be used for determining the rice seed varieties. The best model was an ANN with standard normal variate pretreatment as input data. The accuracy of varieties prediction was 100% for training, 99.1% for testing and 98.1% for validation. Results showed that the NIR spectra and ANN model can be used as detection methods in rice varieties.
Published: 28 December 2017
Jurnal Penelitian Pertanian Tanaman Pangan, Volume 1, pp 173-181; doi:10.21082/jpptp.v1n3.2017.p173-181
Abstract:The combining ability provides information on parental lines selection and F1 hybrids having high yield potential. The analysis important to evaluate new parental lines used at hybrid rice breeding. The objectives of the research were to study combining ability of line (CMS/A) and tester (Restorer/R) in producing the new hybrid rice, and to evaluate those new hybrid performance. The research was conducted in November in 2014 to February in 2015 at Indonesian Center for Rice Research field station, in Sukamandi. Mating design and analysis were done using line x tester design. Thirty hybrids and their parental lines were planted in the field using randomized complete block design with three replications. The characters of yield and yield components were observed. Among the lines, CMS IR 58025A was a good general combiner for number of filled grain per panicle, while GMJ 14A was a good general combiner for maturity, and seed set. Among the testers, PK 12 line was the best general combiner for maturity and seed set, while BP 11 was the best general combiner for number of filled grain per panicle. The new hybrid rice with high specific combining ability for grain weight per hill were GMJ 13A/PK 90 (WA), IR 80154A/R 32 (Gambiaca), and GMJ 14A/R 3 (Kalinga). The hybrids rice with the highest standard heterosis compared than Maro and Ciherang, were GMJ 13A/BP 11, GMJ 14A/PK 90, and GMJ 15A/PK 90, each with CMS with genetic background group of WA, Kalinga, and Gambiaca, respectively.