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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian Jurnal Ilmu Pertanian Agrointek Jurnal Hortikultura AGRIVITA, Journal of Agricultural Science agriTECH Edufisika: Jurnal Pendidikan Fisika Jurnal AGROSAINS dan TEKNOLOGI JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) Journal of Tropical Crop Science International Journal of Supply Chain Management jurnal Ilmu Pertanian (Agricultural Science) Agro Sintesa : Jurnal Ilmu Budidaya Pertanian Aktualita
Faqih Udin
Departemen Teknologi Industri Pertanian, Fakultas Teknologi Pertanian, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Physics Social Sciences Transportation

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Potassium Fertilizer Application Rates for Fertigated Edamame Grown on Low-K Soils Fitri Alfiyah; Purnamawati, Heni; Purwono; Susila, Anas Dinurrohman
Journal of Tropical Crop Science Vol. 11 No. 03 (2024): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.11.03.320-328

Abstract

Edamame, a legume consumed fresh as a vegetable, is highly nutritious, particularly protein-rich, and holds significant economic value. However, its cultivation faces challenges, especially on dry land, due to water scarcity and limited nutrient availability, particularly potassium (K). This study, which investigated the impact of potassium fertilization rate on edamame cultivation, underscores the need for further research. The study utilized a single factor, potassium fertilization rate, arranged in a completely randomized block design. Potassium rates consist of 0% X, 50% X, 100% X, 150% X, and 200% X, where X represents the recommended potassium fertilization rate according to the dry soil test device (DSTD) guidelines. Each treatment was replicated five times. Data were analyzed using ANOVA at a 5% significance level, and any significant effects were further examined using orthogonal polynomial and regression analysis. The results indicated that potassium fertilizer rates did not significantly affect edamame height, pod weight per plot, and marketable yield. However, the study identified the optimal potassium fertilizer rate, which was between 83%X and 119%X, equivalent to 83–119 kg.ha⁻¹ of KCl (50–72 kg.ha⁻¹ of K₂O). This range positively increased total branch yield, productive branches, number of flowers, pod weight per plant, number of pods per plant, and plant dry weight, producing a quadratic response pattern. The study recommends further research to optimize potassium fertilizer doses based on DSTD recommendations, particularly at a low K nutrient status, to maximize marketable yields through fertigation.
Agronomic Performance and Light Interception in a Multi Canopy Rice Cultivation System Husna; Junaedi, Ahmad; Purnamawati, Heni
Journal of Tropical Crop Science Vol. 12 No. 01 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.01.77-88

Abstract

Vertical space optimization through a multi-canopy system can potentially increase rice production. This research aims to evaluate the agronomic performance, light interception, and production of rice plants cultivated with a multi-canopy system. This research was conducted at the Sawah Baru Experimental Farm, IPB University. Rice varieties used two common height plants (“Inpari 30” and “Inpari 32”) and the taller plants (“IPB 9G”). This research consisting of nine treatment combinations of cultivation system: mono-variety (“Inpari 30”, “Inpari 32”, and “IPB 9G”), combination of two varieties in one hill multi-canopy (“Inpari 30”-“IPB 9G” and “Inpari 32”-“IPB 9G”), inter-variety one-insertion multi-canopy (“Inpari 30”-“IPB 9G” and “Inpari 32”-“IPB 9G”), and inter-variety two-insertion multi-canopy (“Inpari 30”-“IPB 9G” and “Inpari 32”-“IPB 9G”). The results showed morphological and physiological performance as good in a multi-canopy system (inter-variety one insertion) on the variables of the plant height, number of panicles per clump, panicle length, number of grains per hill, weight of grains per hill, photosynthetic rate and land equivalent ratio (LER). The percentage of light interception in the multi-canopy system decreased by 19.13-61.54%. The inter-variety one-insertion multi-canopy with the “Inpari 30”-“IPB 9G” combination increases yield potential by 10.18%, and the “Inpari 32”-“IPB 9G” combination increases by 13.81% compared to the mono-variety. The combination of the “Inpari 30”- “IPB 9G” and “Inpari 32”-“IPB 9G” variety in an inter-variety one-insertion multi-canopy system produces an LER value of 1.75 and 1.64; this shows that the inter-variety one insertion multi-canopy system is promising to increase rice production.
Pengaruh Pemupukan Urea dan Varietas pada Tanaman Jagung (Zea mays L.) terhadap Produksi Biomassa dan Biji Fahmi, Muhammad Rasyid Noor; Lubis, Iskandar; Purnamawati, Heni
Buletin Agrohorti Vol. 13 No. 1 (2025): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v13i1.60720

Abstract

Jagung merupakan tanaman pangan yang mempunyai peran strategis dalam pembangunan pertanian dan perekonomian nasional. Produktivitas jagung sangat ditentukan oleh mutu genetik varietas yang ditanam dan pemupukan yang tepat. Kegiatan penelitian ini bertujuan mengetahui pengaruh pemupukan berbagai dosis pupuk urea terhadap dua varietas jagung yang ditanam melalui produksi biomassa dan biji. Penelitian dilakukan pada Januari hingga Mei 2023 di Kebun Percobaan Leuwikopo Departemen Agronomi dan Hortikultura, Institut Pertanian Bogor, Dramaga, Bogor, Jawa Barat. Penelitian dilaksanakan menggunakan rancangan petak terbagi dalam rancangan kelompok lengkap teracak dengan tiga kali ulangan. Perlakuan terdiri dari 2 faktor yaitu varietas dan dosis pupuk urea. Varietas sebagai petak utama dan dosis pupuk urea sebagai anak petak. Dua varietas jagung, BISI-18 (hibrida) dan Bisma (komposit) ditanam dan dipupuk dengan dosis urea 0, 175, 350, dan 525 kg ha-1. Peningkatan dosis urea hingga 525 kg ha-1 secara linier meningkatkan total bobot kering, bobot tongkol dengan kelobot, bobot tongkol tanpa kelobot, diameter tongkol, bobot biji per tongkol, dan bobot biji per plot. Tinggi tanaman, jumlah daun, diameter batang, panjang tongkol, dan nilai SPAD menunjukkan respons kuadratik dengan dosis Urea optimum masing-masing 461.25; 435; 350; 435 dan 518 kg ha-1. Dosis urea 439.25 kg ha-1 merupakan dosis optimum untuk mencapai produktivitas tinggi pada kedua varietas tersebut. Kata kunci: bobot tongkol, diameter tongkol, dosis optimum, produktivitas, total bobot kering
Genetic Diversity of 17 Genotypes of Taro Based on Morphological Characteristics Cahyanti, Lutfy Ditya; Santosa, Edi; Sopandie, Didy; Purnamawati, Heni
AGRIVITA Journal of Agricultural Science Vol 47, No 3 (2025)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v47i3.3929

Abstract

This study aims to identify the morphological characteristics of 17 taro genotypes. The research involved the inventory and morphological identification of taro genotypes in Bogor, West Java Province, and Ponorogo, East Java Province. The morphological description of taro followed the guidelines in the IPGRI descriptor book. Analysis of variance (ANOVA) was used to examine quantitative data. Using the 22-0 version of SPSS Software, Duncan’s multiple range test was employed at a 5% significance level to determine whether the variables observed had a significant effect. A cladogram was created to evaluate the degree of similarity between the taro genotypes based on the collected data. Fourteen genotypes of Colacasia have been identified, consisting of 7 Eddoe types: Satoimo, Ozikawa, Siromi, Jepang Ungu, Dempel, and Dempel Ungu, 7 Dasheen types including Bentul Ungu, Ketan, Pratama, California, Sutra, Pari, and Bentul, while 3 Xanthosoma including Talas hitam, Talas HIjau, and Talas Kuning. The results showed that the highest association coefficient values were found in Pratama with California, Bentul Ungu with Ketan, and Ozikawa with Siromi. The genotypic variance coefficients were high for characters associated with taro's growth and yield, including corm weight, cormel diameter, cormel weight, and plant span.
Chili Yields, Nutrient Use, and Water Use Efficiency under Precision Fertigation at Different Plant Density and Drip Irrigation Lines Susila, Anas Dinurrohman; Suketi, Ketty; Purnamawati, Heni; Rusdan, Risna
Journal of Tropical Crop Science Vol. 12 No. 03 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.03.594-603

Abstract

The study aimed to evaluate the effects of irrigation line number and plant density on the growth and yield of curly red chili pepper (Capsicum annuum L.) cv. Tangguh. The study was conducted from August 2023 to January 2024 at the Cikarawang Experimental Station of IPB University (6°32’56” S; 106°43’54” E; 240 m above sea level) on Ultisol characterized by severely low phosphorus (1.1 ppm) and high potassium content (66 ppm). A split-plot design within a randomized complete block design was employed, with irrigation line number (single or double drip lines per bed) as the main plot and four planting densities (26,666, 53,322, 80,000, and 106,666 plants.ha-1) as subplots. Each treatment was replicated three times, resulting in 24 plots (each 1.5 m × 10 m). Fertilizers applied included Urea (45% N), SP-36 (36% P2O5 ), cattle manure, dolomite, biofertilizers (Trichoderma spp.), and PGPR. Irrigation and fertigation were managed using the Nutrigads automatic drip system. The data collected included plant growth, yield components, nutrient use efficiency, water use efficiency, and partial factor productivity for nitrogen (N) and phosphorus (P). The results showed that the irrigation line number had no significant effect on individual plant growth parameters. However, using double lines significantly increased total fruit yield per bed and hectare, indicating its contribution to overall productivity. Conversely, the double line system reduced water use efficiency (WUE = 2.07 kg.mm-1) compared to the single line system (WUE = 3.64 kg.mm-1; P<0.0001). Higher planting densities (up to 106,666 plants.ha-1) enhanced total yield by promoting vertical growth but reduced individual plant performance, and had a positive effect on WUE, NUE, and PUE.
Enrichment of Organic Manure with Plant Growth Promoting Rhizobacteria Improved the Root and Shoot Growth of Okra (Abelmoschus esculentus L. Moench.) Magana, Richard Elisha; Melati, Maya; Purnamawati, Heni; Pratiwi, Etty
Journal of Tropical Crop Science Vol. 7 No. 03 (2020): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.7.03.137-147

Abstract

A well-structured root system is essential to ensure optimal plant growth and yield. Two experiments were conducted to determine the effects of plant growth promoting rhizobacteria (PGPR) on the root system of okra plant. These experiments were arranged with a completely randomized design. The first experiment was conducted in the growth chamber with 8 different bacterial isolates consisting of Methylobacterium sp., Bacillus sp., Bacillus methylotrophicus, Flavobacterium tirrenicum, Providencia stuartii, Azotobacter vinelandii, Methylocystis parvus and PGPR consortium. The second experiment was conducted in the greenhouse and examined the effects of four poultry manure rates, i.e. 0, 6, 12 and 18 ton ha-1, or equivalent to 0, 75, 150 and 225% of recommended rates and how these are altered with the presence or absence of PGPR. The results of the experiments showed that, PGPR significantly improved root architecture; the number and length of lateral roots was increased by 242.86% and 777.79% respectively, as well as the dry weight of the roots and shoots of okra plant by 236.36% and 333.33%, respectively. Moreover applying 150% (12 t.ha-1) of the recommended rate of poultry manure enriched with PGPR was found to be most effective in terms of improving the growth and root attributes of okra plants.
Growth Performance and Productivity of Several Soybean Genotypes (Glycine max L. Merr.) Cultivated at High Altitude Areas in Indonesia. Lubis, Iskandar; Atmaja, Ian Surya Fitra; Koesoemaningtyas, Tri; Ghulamahdi, Munif; Purnamawati, Heni; Shiraiwa, Tatsuhiko
Journal of Tropical Crop Science Vol. 8 No. 01 (2021): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.8.01.1-7

Abstract

The low productivity of soybeans (Glycine max) and the impacts of climate change have led to the need for adaptive varieties to high altitude to produce high yields. In this study, nine soybean genotypes from different geographic regions, tropical and subtropical, were tested. The aim of the research was to investigate the growth and productivity of different genotypes of soybean when grown in high-altitude environment. Results showed that the tropical genotypes, “Tanggamus” and “SC-1-8” from Indonesia, “Manshuu-masokutou” from China, and “San Sai” from Thailand, had longer growth duration than the subtropical genotypes, “Enrei” and “Fukuyutaka” from Japan, “Stressland” and “Ht-2” from the United States, and “Hakubi” from China. Tropical genotypes have greater growth values than subtropical genotypes as shown by taller plants, greater number of leaves and dry weight. Among the tropical genotypes, “SC-1-8”, which is a soybean line from IPB, showed the best growth rates and competitive crop yield, making it a potentially good candidate for high yielding soybean in Indonesia.
Evaluation of Source and Sink Capacity of New Cowpea Varieties Saidah, Faza Yasmin; Purnamawati, Heni; Lubis, Iskandar
Journal of Tropical Crop Science Vol. 10 No. 01 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.1.38-45

Abstract

Cowpea (Vigna unguiculata (L.) Walp) is a perennial species originating from sub-Saharan Africa. Cowpea has long been cultivated in Indonesia and is classified as a species tolerant of drought and acid soil. Cowpea shows its adaptation to acidic soil (pH = 4.83) by being able to produce 50% to 60% of the seed weight under optimum conditions. This enhances the potential of cowpea to be used and developed as one of the current food options. This research was carried out to optimise of cowpea productivity by studying the relationship between the source and sink of cowpea. This research was conducted from December 2020 to March 2021 at the Cikabayan experimental station, Bogor Agricultural University. The experiment was set up in a completely randomized block design. Four cowpea varieties were evaluated, “Albina”, “Arghavan”, and “Uno”. The measured parameters consisted of photosynthesis rate, stomatal conductance, plant growth rate, the net assimilation rate of the number of pods, pod weight, number of seeds per pod, dry seed weight, the weight of 100-seeds, and productivity. The cowpea varieties did not show significant differences in the rate of photosynthesis, stomatal conductance, plant growth rate, and net assimilation rate. Photosynthesis rate in the three cowpea varieties ranged from 29.20 to 31.77 mol. m⁻².s⁻1 at 50% flowering, and from 17.01 to 19.79 mol.m⁻².s⁻1 at the first harvest. The three cowpea varieties in this study showed no differences in their source-sink capacity and productivity.
Response of Cowpea Growth, Yield and Organic Acid Secretion in Acidic Soil to Variability in Population and Minus One Element Fertilizer Test Gustiningsih, Dini; Purnamawati, Heni; Lubis, Iskandar; Syukur, Muhamad; Kondo, Tomohiro; Higuchi, Hirokazu
Journal of Tropical Crop Science Vol. 10 No. 03 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.03.196-204

Abstract

Cowpea is a legume with the potential to serve as an alternative food source to replace soybeans in Indonesia; soybeans are primarily used in traditional foods such as tempeh and tofu. Currently, 70% of Indonesia's soybean demand is met through imports. Cowpea exhibits the ability to thrive in suboptimal soils with low fertility levels. One of the major challenges in Indonesian agriculture is the prevalence of acidic soils, which are typically deficient in essential nutrients. Notably, a lack of phosphorus (P) is a significant limiting factor affecting crop productivity in these acidic soils. To address this issue, a study was conducted to investigate how cowpea can adapt and grow in acidic soil conditions. The first experiment aimed to understand the impact of plant density and fertilization methods on the growth and yield of cowpea. The results indicated that planting one cowpea plant per hole resulted in a higher number of leaves and branches. Additionally, the treatment with complete NPK showed a higher number of pods, although this was not significantly different from the treatment with reduced phosphorus (minus P). These findings suggest that cowpea can thrive in acidic soil even under conditions of phosphorus deficiency. Cowpea has developed an external adaptation mechanism through the secretion of organic acids from its roots to survive in low-phosphorus acidic soils. As a follow-up to these findings, a second experiment was conducted to identify the types of organic acids secreted by cowpea roots under conditions of phosphorus deficiency, using High-Performance Liquid Chromatography (HPLC). The results revealed that the organic acids produced by cowpea root exudates were primarily malic acid and oxalic acid. These research outcomes provide valuable information for growers, indicating that cowpea can be successfully cultivated in acidic soils. Cowpea's ability to produce organic acids allows it to thrive in such environments even when phosphorus levels are low.
Leaf Pruning Increased Seed Yield and Leaf Production of Cowpea (Vigna unguiculata L. Walp) Hartini Kilbaren, Muji; Purnamawati, Heni; Melati, Maya
Journal of Tropical Crop Science Vol. 10 No. 03 (2023): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.10.03.213-223

Abstract

The leaves and pods of cowpea (Vigna unguiculata L. Walp) have potential uses as vegetables. This research aimed to assess the impact on cowpea growth and seed yield through different pruning times, methods, intensities, and their interactions. Conducted at the Cikabayan Experimental Field, IPB University, between April and August 2022, the study employed a randomized complete block design with three factors and three replications. The first factor, pruning time (5 and 7 weeks after planting, WAP), represented vegetative and generative phases. The second factor involved pruning methods (leaf and shoot), while the third focused on pruning intensity (0, 10, 30, and 50% of leaf numbers). This resulted in 16 treatment combinations, replicated three times, yielding 48 experimental plots. Measured variables included pruned leaf count, pruned leaf weight, total leaf count, plant fresh and dry weights, cowpea plant C/N ratio analysis, pod wet and dry weights, pod count, pod length, seeds per pod count, 100-seed weight, dry seed weight per plant, dry seed weight per plot, and cowpea seed productivity. Results highlighted significant effects of pruning time, method, and intensity on leaf count, shoot fresh and dry weights, and C/N ratio of cowpea plants after two weeks of pruning. However, the treatments did not significantly influence cowpea seed yield. Pruning cowpea leaves led to an average pruned leaf weight of 30 g per plant, offering a nutritious vegetable source without compromising cowpea seed yield. These leaves commanded a market price of approximately Rp. 6000 per kg, transforming them into a valuable economic asset when utilized as vegetables, thus contributing to the sale of nutritious food.
Co-Authors , Yudiwanti , Yudiwanti . Sugiyanta, . Adji, Ibnu Surastyo Adolf Pieter Lontoh, Adolf Pieter Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri AHMAD JUNAEDI Ahmad Junaedi Alfian, Muhammad Sukma Alim Setiawan S Anas Dinurrohman Susila Anggita Perdana Arinal H.I. Nurrahma Arinal Haq Izzawati Nurrahma Arraudah, Rahayu Atikah Fajri Atmaja, ian Surya Fitra Aulia Rahmawati Aulia Rahmawati, Aulia Bagus Arrasyid Desta Wirnas Dian Diani Tanjung Didy Sopandie Dwi Guntoro Edi Santosa Edi Santosa Edi Santosa Eko Sulistyono Elisa Anggraeni Etty Pratiwi, Etty Evanila Silvia Fachrul Rohimin Iska Fadillah, Resti Fahmi, Muhammad Rasyid Noor Fibrika Rahmat Basuki, Fibrika Rahmat Fitratunnisah Fitri Alfiyah Gultom, Sandry Gustiningsih, Dini Hartini Kilbaren, Muji Higuchi, Hirokazu Hulu, Versi Putra Jaya Husna Hutabarat, Saut Mangasi Irfan Rabani Iska, Fachrul Rohimin Iskandar Lubis Iskandar Lubis Jaisyurahman, Usamah Juang Gema Kartika Jun-Ichi Sakagami Ketty Suketi Kondo, Tomohiro Kurniawan, Rizal Mahdi Kusumo, Yudiwanti W. E. Liana, Devi Luh Made Indah Sri Handari Adiputra Lutfy Ditya Cahyanti, Lutfy Ditya Magana, Richard Elisha Marimin , Marta Yuliani Velisitas Eklemis Maya Melati Maya Melati Mentari, Bunga Permata Muhamad Syukur Muhammad Sukma Alfian Munif Ghulamahdi Nofi Anisatun Rokhmah Noveria Sjafrina Nugroho, Sasmoyo Adi Nurgama, Prama Nurul Khumaida Nurul Khumaida Nurul Khumaida Odi Andanu Perdana, Anggita Prama Nurgama Purwono Ratna Suminar Rika Riyani Risna rusdan Riyanti, Shoni Rizal Mahdi Kurniawan Roedhy Poerwanto Safitri Nuraina Saidah, Faza Yasmin Salsabila Sandry Gultom Sapta Raharja Sasmoyo Adi Nugroho Saut Mangasi Hutabarat Shiraiwa, Tatsuhiko Shoni Riyanti Sinaga, Intan Lorenza Siregar, Valdi Muhamad Rafiansyah Siti Marwiyah Siti Marwiyah Slamet Susanto Sofyan Zaman Sri Astuti Rais Sri Astuti Rais Sri Ayu Dwi Ayu Dwi Lestari, Sri Ayu Dwi Ayu Dwi Sugiyanta Supijatno Surjono Hadi Sutjahjo Suwarto Suwarto Suwarto Syamsuwarni Rambe Tajuddin Bantacut Taufik Djatna Thresna Suci Riyandhini Titi Candra Sunarti TRI KOESOEMANINGTYAS Trikoesoemaningtyas Ummu Kalsum Ummu Kalsum Usamah Jaisyurahman Windi Habsari Yandra Arkeman Yandra Arkeman Yudiwanti W. E. Kusumo Yudiwanti Wahyu E. Kusumo Zuliati, Septiarini