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INDONESIA
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Published by Institut Pertanian Bogor
ISSN : 20852916     EISSN : 23373652     DOI : -
Core Subject : Economy, Agriculture,
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance
Aims and Scope Aims Indonesian of Journal Agronomy (Jurnal Agronomi Indonesia), the official journal of the Indonesian Society for Agronomy, publishes primary research paper, review article, policy analysis and research notes and preliminary results in all areas of agronomy. Manuscripts could be written either in English or in Indonesia. Scope Indonesian of Journal Agronomy (Jurnal Agronomi Indonesia) covers agronomy in broad sense including plant production, genetic and plant breeding, plant physiology, plant ecology, plant biotechnology, modeling, seed science and technology and weeds science on food, horticulture, plantation, and forage crops.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 971 Documents
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Growth response of pak choi (Brassica rapa L.) on different concentrations and intervals of eco-enzyme applications Soverda, Nerty; Swari, Elly; Neliyati, Neliyati; Putri, Desma; Wahyuni, Dilla
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 1 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i1.53868

Abstract

Vegetable cultivation using eco-enzyme application is one way to improve its production. The study aimed to evaluate the growth response of pak choi using eco-enzyme in several concentrations and its interval. The experiment used a randomized complete block design with two factors (concentrations and interval of eco-enzyme applications). The results showed that the application of eco-enzyme with a concentration of 30 mL L-1 indicated an optimal growth stimulator in pak choi, but it was not significantly different as compared to 50 mL L-1. The application of eco-enzyme twice a week was able to stimulate plant growth including plant height, number of leaves, leaf area, shoot fresh weight, and root fresh weight. Furthermore, there was a linear correlation between leaf area and plant height, leaf number, shoot fresh weight, and root fresh weight that ranged from weak to strong levels. It is recommended to apply eco-enzyme at a concentration of 30 mL L-1 twice a week for optimal pak choi production. Keywords: correlation, leafy vegetable, green olericulture, organic fertilizer, plant booster
Growth of cocoa seedlings (Theobroma cacao L.) in application of cow manure compost and density of Bacillus subtilis bacteria Kasim, Nurlina; Nasaruddin; Widiayani, Nuniek; Andi Syaiful, Syatrianti; Ningsih, Sry Rahayu
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.51505

Abstract

Cocoa rejuvenation is important to maintain high productivity. The rejuvenation mainly uses seedlings; thus providing high-quality seedlings is important. This research aimed to determine the effect of various doses of cow manure compost and the density of Bacillus subtilis bacteria on the growth of cocoa seedlings. The research was implemented at the Teaching Farm, Faculty of Agriculture, Hasanuddin University, Makassar City, from 2021 to 2022. The experiment was arranged in a split-plot design with three replications. The main plot was the dose of cow manure (without compost, 1.25 kg per polybag, and 2.5 kg per polybag). The subplot was the density of Bacillus subtilis (without bacteria, 104 CFU.mL-1, 108 CFU.mL-1, and 1012 CFU.mL-1). The results showed an interaction between the dose of cow manure 2.5 kg per polybag and the bacterial density 1012 CFU.mL-1 on chlorophyll a (347.91 mol.m-2), chlorophyll b (158.33 mol.m-2), total chlorophyll (444.57 mol.m-2), and leaf area of cocoa seedlings (813.96 cm2). A compost dose of 2.5 kg per polybag showed the best results for plant height (8.98 cm). Keywords: bacteria density; bivariate correlation; chlorophyll content; manure dose; organic fertilizer
Evaluation of phosphorus fertilizer rate based on Upland Soil Test Kit analysis for tomato fertigation Alveno, Vitho; D. Susila, Anas; Suketi, Ketty; Maharijaya, Awang
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.52177

Abstract

Upland Soil Test Kit (PUTK) is a rapid soil analysis kit that estimates the nutrient availability in soil. From previous studies, tomato plant production showed a good correlation with available phosphorus (P) and potassium (K) analysis using the PUTK. This study aimed to find the optimal P fertilizer rate based on PUTK analysis for tomato fertigation. This experiment was carried out using a randomized complete block design, four replications with a single factor, namely P fertilizer rate comprising 0% X, 50% X, 100% X, 150% X, and 200% X, with X the recommended P fertilizer of PUTK on moderate P availability (175 kg ha­1). The ANOVA showed that P fertilizer did not significantly affect the vegetative growth, production, and fruit quality of tomatoes. It means that PUTK analysis had low accuracy as a basis for determining the optimum P fertilizer rate for tomato fertigation. The low accuracy could be due to PUTK underestimating the status of soil P availability. Mechlich-1 analysis showed that the experimental field had high P availability (44.6 ppm), while PUTK analysis still indicates moderate P availability. This shows that PUTK needs to be developed further, especially quantifying the result to help make informed and accurate decisions. Keywords: precision farming; precision fertilization; Upland Soil Test Kit; FERADS; sustainable agriculture
Leaf growth pattern and morphology of Sauropus androgynus (L.) Merr. in tropical lowland Muda, Strayker; Lakitan, Benyamin; Gustiar, Fitra; Ramadhani, Fitri; Rizar, Fitra; Nurshanti, Dora; Ria, Rofiqoh; Ratmini, Niluh; Purwanto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.53915

Abstract

Chikurmanis or katuk (Sauropus androgynus (L.) Merr.) is a traditional leafy vegetable that is consumed widely in Indonesia. The leaf is rich in vitamins, minerals, nutrients, and dietary fiber. The study aimed to investigate the leaf growth pattern and morphological characteristics of the chikurmanis cultivated in the tropical lowland ecosystem. The research was conducted on local farmland in Marga Sakti Sebelat, Bengkulu, Indonesia on December 2023 by survey method. The results showed that the leaf of chikurmanis grew in the daytime and continued to grow at nighttime as indicated in midrib length, leaf width, and foliole number. It is likely that nighttime growth become predominant in chikurmanis. The plant was a type of shrub with complete organs of stem, branch, root, flower, and leaf. The leaf was arranged as a compound leaf with many folioles in opposite positions. Midrib length (M) x leaf width (W) with a zero intercept of linear regression was the most reliable predictor of leaf area with the formula Y = 0.4964MxW (R2 = 0.9677). Keywords: chikurmanis plant; katuk; leaf area estimation; morphological trait; traditional leafy vegetable
Growth and nitrogen uptake modeling in composite and hybrid corn varieties Fajar Ilhamy, Muhammad Rizki; Suwarto; Herdhata Agusta; Abdul Qadir
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.53962

Abstract

Corn is a strategic commodity in Indonesia's agricultural and economic development. The problem of corn production can be overcome with proper usage of nitrogen fertilization. Dynamic modeling can be used as a tool to solve this problem. This study aimed to develop a dynamic model for the growth and nitrogen uptake of composite and hybrid corn varieties. Stages in the model construction: (1) identifying system components, (2) model construction, (3) simulation, and (4) validation. The growth model is a construction of the plant's ecophysiological response to solar radiation and temperature in photosynthesis. A growth model in composite and hybrid corn varieties with simulated dry weight as output has been constructed validly. The model input components, such as light use efficiency, extinction coefficient, specific leaf area, and carbohydrate partition coefficient varied at each development phase for each variance. The actual total dry weight on the Pioneer 27 variety was 6,406 kg ha-1 with a simulated total dry weight was 6,228 kg ha-1, and the actual total dry weight on the Bisma variety was 5,127 kg ha-1 with a simulated total dry weight was 4,864 kg ha-1. The level of validity of the Pioneer 27 variety growth model reached 83.5% and the Bisma variety reached 80%. Keywords: Bisma; dry weight; growth model; nitrogen uptake; Pioneer 27; simulation; validation
Optimizing cultivation system and pest management in different types of rice varieties Andryan, Ricky; Junaedi, Ahmad; Purwono; Prasetyo , Lilik Budi; Izzawati Nurrahma, Arinal Haq
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.54078

Abstract

Improving rice productivity and efficiency is the main goal of cultivation techniques to meet the demand for rice production. The aim of this research was to evaluate the suitability of rice varieties in cultivation systems, namely: organic cultivation + biological pest management (BPM), inorganic cultivation + BPM, and conventional cultivation. Different types of rice varieties, namely New Superior Varieties (NSV: INPARI-30, INPARI-32), New Plant Type (NPT: IPB-3S), and Superior Varieties from West Sumatra (Batang Piaman, Anak Daro), may exhibit differences in agronomic performance across various cultivation systems. This research was conducted at the Sawah Baru Babakan Experimental Farm, IPB University, Dramaga Bogor, using a factorial nested design with 4 replications. The results based on yield per hill and plot showed that Batang Piaman and INPARI-30 varieties were suitable for all organic + BPM, inorganic + BPM, and conventional cultivational systems. The INPARI-32 and IPB-3S varieties were more suitable for conventional cultivation and inorganic + BPM; while the Anak Daro variety was better in organic cultivation + BPM. Utilizing varieties with different characteristics for better yield performance could be considered with obtaining the suitability of the cultivation system, whether organic + BPM, inorganic + BPM, or conventional. Keywords: Chemical pest control; conventional cultivation; organic cultivation; integrated pest management
Evaluation of Wedelia water extract on soybean, purple nutsedge, and billygoat seeds germination Respatie, Dyah Weny; Purwantoro, Aziz; Indradewa, Didik; Uyun, Qurrotul; Hafidhotul Ilmiah, Haviah
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.56918

Abstract

Weeds cause significant yield loss in many agriculture crops; thus, management practices are urgently needed to alleviate losses while conserving environmental and human health. This study aimed to evaluate the allelopathic potential of Wedelia leaf and flower extracts on the germination and early growth stage of three plant species. The research was conducted using a completely randomized design experiment with two factors and four replicates. The first factor was extract sources: leaves (S1) and flowers (S2). The second factor was the concentration: control (C0) and extract concentrations of 1% (C1), 5% (C5), and 10% (C10). The extract was tested on three different plant species: soybean (Glycine max), nutsedge (Cyperus rotundus), and billygoat weed (Ageratum conyzoides). Fifty seeds of three different plants were germinated separately in Petri dishes and treated using Wedelia extracts. The allelochemicals in Wedelia leaf and flower extracts inhibited germination and induced abnormal sprouting. Wedelia leaf extract showed the most pronounced inhibitory effects and highest inhibition levels across all measured parameters. Moreover, a clear concentration-response relationship was observed, where increased extract concentration increased the degree of inhibition. These findings contribute to the development of bioherbicides and can help reduce the use of synthetic herbicides for more sustainable agriculture. Keywords: Ageratum conyzoides, bioherbicide, Cyperus rotundus, Glycine max, weed control
Land use efficiency of sweet corn intercropping with different cowpea planting dates Sumarni, Titin; Anggoro, Ariek Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.57193

Abstract

Cultivation of cowpea and sweet corn can optimize land use through an intercropping system, however, the planting date on intercropping is rarely evaluated. The research aimed to evaluate land use efficiency in sweet corn intercropping of different planting dates of cowpea. This research was conducted from January to May 2024 in Bocek Village, Malang, East Java. The study used a randomized complete block design with a single factor consisting of 7 levels, i.e., monoculture sweet corn, and sweet corn intercropping with different cowpea planting dates (0, 7, 14, 21, 28, and 35 days after sweet corn planting (DAP). Plant growth, yield, land equivalent ratio (LER), and area time equivalent ratio (ATER) were evaluated. The results showed that the intercropping sweet corn and cowpea planted at 21 DAP produced a higher yield than other planting dates. The highest LER of 1.96 and ATER of 1.93 was achieved in the sweet corn with cowpea planted at 21 DAP, indicating the highest land use efficiency occurred at the planting date of cowpea 21 days after planting sweet corn. Keywords: ATER; cropping system; LER; planting time; Vigna unguiculata; Zea mays
Growth and water-needs analysis of sweet corn and peanuts in different cropping systems Ramadhani, Rezky Puryan; Santosa, Edi; Purwono
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.57440

Abstract

Maize and peanuts are important food crops in Indonesia and are generally planted in monoculture and intercropping systems. The water required for monoculture and intercropping is believed to be different. However, comparison analysis of water requirements in monoculture and intercropping is rarely conducted. The research aimed to evaluate the growth and production of sweet corn and peanuts in monoculture and intercropping systems concerning water requirement and crop coefficient. The study was conducted at IPB Experimental Station in Leuwikopo, Bogor, Indonesia from September to December 2022. Sweet corn and peanuts were planted in different cropping systems, i.e., monoculture and intercropping. Water consumption of both cropping systems was evaluated in every growing stage. The experiment used a completely randomized block design and was repeated three times. Results showed that sweet corn growth was not significantly different among cropping systems, but yield from intercropping was lower than monoculture. Intercropped peanuts grew lower than monoculture but did not show any significant difference in yield among cropping systems. Water use efficiency in intercropping was higher than monoculture for both crops, indicating intercropping is a suitable cropping system for limiting soil water availability. The land equivalency ratio was 1.80, concluding that intercropping was more efficient than monoculture in land use by 80%. Keywords: climate change; crop coefficient; intercropping; land equivalent ratio; water use efficiency
Improvement of iron content, total phenolic, and antioxidant activity of green spinach (Amaranthus tricolor L.) with maggot fertilizer Andrianto, Dimas; Nurcholis, Waras; Ghifari, Muhammad Nabil
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 52 No. 2 (2024): Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24831/jai.v52i2.50063

Abstract

Green spinach (Amaranthus tricolor L.) is a plant that contains various vitamins, such as vitamins A, B, and C, as well as protein and fiber. Green spinach contains high iron. Besides that, spinach also contains secondary metabolites such as flavonoids, antioxidants, and phenolics, which are beneficial for degradative diseases. This study aimed to evaluate the impact of plant height, iron content, total phenolic content, and antioxidant activity in spinach plants using a 70% ethanol solvent. The samples were extracted through a maceration method in a microwave for 3 minutes, followed by filtration to obtain the test sample filtrate. Iron content was determined using the ICP-OES method, total phenolic content (TPC) was measured with the Folin-Ciocalteu method, and antioxidant activity was assessed using the DPPH method. The findings revealed that treatment 2 (2 parts maggot fertilizer to 8 parts soil) had the highest iron content and antioxidant activity, whereas treatment 1 (1 part maggot fertilizer to 9 parts soil) showed the greatest plant growth and phenolic content. Keywords: allelochemical; bioherbicide; inhibitory effect; weed control

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