Jurnal Ilmu-Ilmu Pertanian Indonesia

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ISSN : 1411-0067
Total articles ≅ 87

Latest articles in this journal

Elva Suryani, Ronny Yuniar Galingging, Widodo Widodo, Marlin Marlin
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 66-71; doi:10.31186/jipi.23.1.66-71

[APPLICATION OF LEAF FERTILIZER TO INCREASE THE GROWTH AND YIELD OF BAWANG DAYAK (Eleutherine palmifolia (L.) Merr)]. Bawang Dayak (Eleutherine palmifolia (L.) Merr) is a potential medicinal plant and required improved growth and yield through the application of appropriate fertilizers. This study aimed to increase the growth and yield of bawang Dayak by determining the optimum concentration and time interval of foliar fertilizer application. The experiment was arranged in a completely randomized block design factorial. The first factor was the concentration of foliar fertilizer, consisting of 0,1, 2, and 3 g/L. The second factor was interval application of foliar fertilizer, consisting of every day, every 3 days, every 6 days, and every 9 days. The results showed that bawang Dayak did not show a significant response to foliar fertilizers. However, there was an interaction between the concentration and interval of foliar fertilizer application which had a significantly different effect on plant height. The highest plant height occurred at intervals of 3-day foliar fertilizer application with a concentration of 3 g/L. The concentration of foliar fertilizer had a significant effect on the variables of plant height, bulb fresh weight, as well as the bulb numbers. All concentrations of foliar fertilizer (0-3 g/L), and time intervals of foliar fertilizer application (1-9 days) affected the same growth and yield response of Bawang Dayak.
Edi Susilo, Hesti Pujiwati, Muhimmatul Husna
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 15-22; doi:10.31186/jipi.23.1.15-22

[GROWTH AND YIELDS OF SORGHUM VARIETIES TREATED WITH VARIOUS DOSES OF NPK FERTILIZER IN COASTAL LAND]. Sorghum has a potential to be developed in marginal land in coastal area. Drought stress and low availability of utrients in the coastal area are the main problems in growing sorghum. Introducing the drought tolerance variety is one solution to overcome the drought stress in coastal land in order to improve sorghum yields. In addition, the treatment of NPK fertilizer is needed to fulfill the nutrients requirements for growth and yields. This research aims to determine the best sorghum variety and an appropriate dose of NPK fertilizer for the growing sorghum in coastal land. Field experiment was conducted at the coastal area in Bengkulu City from August until November 2021. The experiment was arranged in Randomized Completely Blok Design with two factors. That were sorghum varieties (Numbu, Super 2 and Kawali) and NPK fertilizer doses (150 kg/ha, 300 kg/ha and 450 kg/ha). The results showed that the interaction between sorghum variety and NPK fertilizer dose were not significant on the growth and sorghum yields. Numbu varieties produced the highest panicle weight per plant of 69.42 gram. The research concluded that Numbu variety showed the best growth and yields compare two other varieties. The maximum growth and yield of sorghum in coastal land were observed at NPK 450 kg/ha dose.
Nurleni Kurniawati, Priyadi Priyadi
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 9-14; doi:10.31186/jipi.23.1.9-14

[EFFECT OF FLY ASH APPLICATION FROM POWER PLANT OF PT. GREAT GIANT PINEAPPLE ON SOIL BIOLOGYCAL ACTIVTY IN MARGINAL LAND]. Fly ash is a coal combustion waste containing nutrients that can be used to improve the soil fertility. The waste continues to increase but its handling is still limited because it is still classified as hazardous and toxic waste (B3). This study aims to determine the soil biological activity due to the application of fly ash and cow manure on marginal soils. The study was conducted using a completely randomized block design arranged factorial. The first factor is the dosage level of fly ash (F), namely 0 g/pot (0 ton/ha), 75 g/pot (50 ton/ha), 150 g/pot (100 ton/ha), and 225 g/pot (150 ton/ha) and the second factor is the dose of cow manure with three levels, namely 15 g/pot (10 ton/ha), 30 g/pot (20 ton/ha), and 45 g/pot (30 ton/ha). The observation parameters were (total population of fungi, bacteria, and soil respiration). The results showed that the addition of fly ash at various doses affected the soil biological activity by increasing the population of fungi, bacteria and soil respiration. The highest population of microorganisms was fungi, which was 17.8 x 107 Log CFU/g, bacteria 13.7 x 105 Log CFU/g, while the highest soil respiration was 54.53 mg CO2 at a dose of 100 ton/ha fly ash. In addition, the application of cow manure at a dose of 10, 20, 30 ton/ha did not affect observed variables.
Pratiwi Pratiwi, Marwanto Marwanto, Widodo Widodo, Merakati Handajaningsih
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 1-8; doi:10.31186/jipi.23.1.1-8

[LEAF NITRATE CONTENT, GROWTH, AND BIOMASS YIELD OF GREEN MUSTARD AND CHINESE CABBAGE FOLLOWING BALANCED APPLICATION OF INORGANIC NITROGEN FERTILIZER AND AZOLLA COMPOST]. The aim of this study was to determine the application rate of Azolla compost, either alone or combined with inorganic N fertilizers, to produce high biomass of mustard greens and Chinese cabbage with low leaf nitrate content. The pot experiments were carried out at the Research Plot of the Faculty of Agriculture located in Bengkulu University Campus from December 2019 to January 2020 with five treatments arranged in a completely randomized design with five replications. The treatments were 100% IF or IF100 (42.0 mg N/kg soil), 100% AC or AC100 (4000 mg/kg soil), IF75 (31.0 mg N/kg soil) + AC25 (1000 mg/kg soil), IF50 (21.0 mg/kg soil) + AC50 (2000 mg/kg soil), and IF25 (10.5 mg/kg soil) +AC75 (3000 mg/kg soil). The results showed that partial replacement of IF with AC (IF75 +AC25) produced plant growth and biomass yield similar to IF100 or higher than IF100 and AC100. The treatment produced plant biomass of 9.35 g plant-1 for green mustard and 167.10 g plant-1 for pakcoy, 32% and 35% higher than AC100 treatment respectively. The leaf nitrate content was 1080 - 2760 mg kg-1 for green mustard and 2310 - 2820 mg kg-1for Chinese cabbage, lower than the maximum limit of safe nitrate for consumption which was set at 3100 mg kg-1. Overall, compared with their sole applications, the partial substitution of inorganic N fertilizer with Azolla compost represents the most effective practice to promote the biomass yield of low-nitrate green mustard and Chinese cabbage.
Erin Puspita Rini, Sugiyanta Sugiyanta
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 46-52; doi:10.31186/jipi.23.1.46-52

[CABBAGE (Brassica olacea var. capitata) GROWTH AND YIELD AFFECTED BY COMBINATION OF ORGANIC AND INORGANIC FERTILIZER APPLICATIONS]. The use of organic fertilizer increasingly sought by farmers due to the increase in demand for organic products by consumers and also awareness of the sustainability of the land. The use of organic fertilizers in the cultivation alone could improve the soil quality but needs to be balanced with inorganic fertilizers to meet the nutrient adequacy. This study aims to examine the effect of organic and inorganic fertilizers combination on the growth and cabbage yield, and also to determine the most efficient dosage combination of organic and inorganic fertilizers. This research was conducted at the IPB Pasir Sarongge Experimental Station, Cianjur, West Java from November 2020 to February 2021. The study was compiled using RCBD with 4 replications and 7 treatments. The results showed the combination of 0.75 doses of inorganic fertilizer (150 kg/ha of urea, 75 kg/ha SP36, and 75 kg/ha KCl) and 3 tons/ha of organic fertilizer could increase 14.87 to 15.44% plant height and the number of leaves at 12.82 -15.11% compared to the same dose of inorganic fertilizer treatment alone. The combination of 1 dose (200 kg/ha of urea, 100 kg/ha SP36, and 100 kg/ha KCl) inorganic fertilizer application and 2 tonnes/ha of organic fertilizer could increase 50,60% yield/plot and yield/ha cabbage than 1 dose of inorganic fertilizer treatment..
Helfi Eka Saputra, Umi Salamah, Welly Herman, Marlina Mustafa
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 61-65; doi:10.31186/jipi.23.1.61-65

[FRUIT PERFORMANCE OF 26 GENOTYPES OF MELON (Cucumis melo L.) IN WICK HYDROPONIC CULTIVATION SYSTEMS]. Fruit performance is determining quality factor for melon fruit. This research aimed to obtain the melon genotype which has the best fruit quality by the cultivation of the wick hydroponic system. The research was conducted from June to September 2020 in the greenhouse of the Agronomy Laboratory, Bengkulu University. The study was compiled with a single-factor of the melon genotypes using randomized complete block design (RCBD) with two replications. The genotypes were G23, G27, G28, G29, G38, G39, G40, G41, G42, G43, G45, G46, G47, G48, G49, G52, G53, G55, G57, G58, G60, G62, G63, G64, G65, and G66. The best genotypes for fruit length characters were G28 and G42. The best genotypes for fruit diameter character were G52, G58, G60, G64, and G66. The best genotype for fruit thickness character was G43. The best genotype for total dissolved solids character was G45. The best genotypes for fruit weight characters were G58, G66, and G60.
Mariana Mariana, Elly Liestiany, Fahmi Rizali Cholis, Nazwan Syahbani Hasbi
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 30-36; doi:10.31186/jipi.23.1.30-36

[CHILLI ANTHRACNOSE DISEASE BY Colletotrichum sp. AT SWAMP LAND OF SOUTH KALIMANTAN PROVINCE]. Anthracnose is one of the major economic constraints for chili production worldwide. This disease is caused by the fungus Colletotrichum sp. The yield loss reaches 50% - 100% in the rainy season. In swamps, the incidence of this disease begins to increase. As the basis for the integrated control of anthracnose, it is necessary to record disease incidence and identify pathogens that attack conditions in swampsThe disease intensity survey was conducted in Hiyung chilli cultivation of Hiyung village lowland and the tidal swamplands of Marabahan district. The method is using Purposive Random Sampling approach. The Koch’s Postulates is used to determined the cause of the disease. Identification of pathogens that cause anthracnose is carried out in laboratories and greenhouses. Determination of obtained pathogen’s type is using literature references. The results of this study indicate that Hiyung chilli in the Hiyung village lowland shows a fairly high incidence of disease – i.e 43.78%, moreover, the result of Marabahan district tidal swamplands is 29.29%. Three Colletotrichum species were found, namely Colletotricum truncatum, C. gleosporiedes and C. acutatum.
Reza Prakoso Dwi Julianto, Sri Umi Lestari, Edyson Indawan
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 53-60; doi:10.31186/jipi.23.1.53-60

[CORRELATION AND PATH ANALYSES FOR DETERMINING THE SELECTION CRITERIA OF HIGH YIELDING SWEET POTATO (Ipomoea batatas (L.) Lam.)]. Sweet potatoes can serve as an alternative source of healthy carbohydrates. The productivity of sweet potato is relatively low, namely 13,51 tons/ha. Plant breeding activities are one of the solutions to develop superior varieties. The success of plant breeding is determined by the success of the selection activity, one of which is determined by the selection characters used. Correlation and path analysis are used to study the closeness of the quantitative variables as the basis for a more efficient selection program. The purpose of research was to determine the character selection of sweet potato and determine the correlation pattern between the observed characters based on the correlation coefficient value along the direct and indirect effect. The research was carried out on dry land with Inceptisol dryland, at an altitude of 350 m above sea level using a randomized block design with three replications. The material used in the researh was thirteen sweet potato genotypes. The results of the correlation analysis showed that the tuber yield had a very strong and positive correlation to the number of plants (r = 0.706), tuber fresh weight (r = 0.816), and tuber BK (r = 0.898), while the tuber number variable had a moderate positive correlation. (r = 0.605). Several variables also showed a negative relationship, including stover fresh weight,% BK tuber, BK stover, and BK biomass. Based on the analysis and path analysis, the BK variable can be used as an effective and efficient selection variable in producing high yield sweet potatoes.
Abdul Fiddin, , Hendri Bustamam, Dwi Wahyuni Ganefianti, Sipriyadi Sipriyadi
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 37-45; doi:10.31186/jipi.23.1.37-45

[TUNGRO DISEASE ON RICE PLANT (Oryza sativa) IN TABA PENANJUNG DISTRICT: DISEASE INCIDENCE AND MOLECULAR DETECTION OF VIRUSES]. Tungro is one of the important diseases of rice plants. Tungro disease caused by Rice tungro bacilliform virus (RTBV) and Rice tungro spherical virus (RTSV). This research aims to obtain information on the spread of the disease, vector population, and molecular detection by polymerase chain reaction method. This research was conducted from December 2019 to April 2020 in rice fields in Taba Penanjung sub-district, Bengkulu Tengah district at ± 540 meters above sea level and virus detection in the Laboratory of Biotechnology and Genetics Department of Biology Faculty of Mathematics and Natural Sciences (MIPA) and Laboratory of Plant Protection, Agriculture Faculty, Bengkulu University. Data analysis used descriptive analysis. The results showed that the highest disease incidence on the seven weeks after planting (wap) is 1.7% and the highest population of the vector on the 7 wap with an average of 7.7 vector/100m2 in the village of Taba Penanjung. Detection of viruses with the PCR method with the specific primer DAF/DAR succeeded in amplification of DNA band measuring 1,400 bp. RTSV was not detected by RT- PCR using a specific primer or RTSV. The result of this detection shows that the symptoms of tungro on rice plants in the cultivation of Taba Penanjung district associated with RTBV infection. RTSV unable to detect can be caused by many factors in the detection process, including total RNA extraction, cDNA synthesis, DNA amplification, and DNA visualization of PCR products.
Yohanes Manggas, Widowati Widowati, Hesti Triana Soelistiari
Jurnal Ilmu-Ilmu Pertanian Indonesia, Volume 23, pp 23-29; doi:10.31186/jipi.23.1.23-29

[CHLOROPHYL CONCENTRATION AND YIELD OF PAKCOY (Brassica rapa L.) AFTER TWO YEARS OF BIOCHAR AND ORGANIC FERTILIZER APPLICATION IN ENTISOLS]. While nitrogen is necessary throughout the growth of vegetable plants, N deficiency disrupts chlorophyll formation, and hence, affecting the photosynthesis process. This study aimed to study the impact of the use of biochar and organic fertilizers on chlorophyll content and yield of Pak coy mustard in the third planting season in Entisols. This research was conducted in Bawang Hamlet, Tunggulwulung Village, Malang City. The first and second planting seasons, were May-November 2017 and August 2018-January 2019, respectively. Research on the third planting season was carried out in July-August 2019 without nitrogen fertilization. The research was arranged in a randomized block design, consisting of controls (Kl), chicken manure (A), compost (K), rice husk biochar (S), rice husk biochar + chicken manure (SA), rice husk biochar + compost (SK). The results showed that after two years of application, biochar and organic fertilizers had a positive impact on the increase in yield of Pakcoy even though fertilizer was not provided. The application of biochar and compost provided the best residual effect on the total chlorophyll of Pakcoy mustard.
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