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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.
Growth and Production of Cassavas in Intercropping System with Cowpeas Sinaga, Intan Lorenza; Suwarto, Suwarto; Purnamawati, Heni; Guntoro, Dwi
Journal of Tropical Crop Science Vol. 11 No. 02 (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.11.02.128-136

Abstract

Cassava is one of the most important commodities worldwide, serving as a crucial food source due to its rich content of nutrients such as carbohydrates, protein, fat, calcium, and magnesium. Cassava is a perennial crop with slow growth, necessitating the selection of intercrops with shorter harvest periods. Cowpea, a legume high in protein, is widely cultivated and suitable for intercropping with cassava. Intercropping these crops involves adjusting planting distances to optimize yield. This study aims to determine the optimal planting distance in an intercropping system that yields the highest productivity for the cassava variety “Mangu” and the cowpea varieties “Albina” and “Uno”. The research was conducted from January to June 2023 at the IPB Experimental Farm in Sawahbaru, Dramaga, Bogor, on Latosol soil, at an altitude of 207 meters above sea level. The study utilized a randomized complete block design with a single factor: the intercropping system pattern. The patterns tested were 1:2 (one row of cassava with two rows of cowpea) and 1:3 (one row of cassava with three rows of cowpea), consisting of: P1: “Mangu” and “Uno” 1:2; P2: “Mangu” and “Uno” 1:3; P3: “Mangu” and “Albina” 1:2; P4: “Mangu” and “Albina” 1:3; P5: “Mangu” monoculture; P6: “Uno” monoculture; P7: “Albina” monoculture. The results indicated that the P3 planting system yielded the highest crown height at 1, 5, and 6 months after planting (MAP), the highest canopy diameter at 4 months after planting, tuber production, and 100 seed weight of cowpea. The P4 system produced the highest stem diameter, number of leaves, number of pods, pod dry weight, and seed dry weight at 9 months after planting.
Akumulasi dan Distribusi Bahan Kering pada Beberapa Kultivar Kacang Tanah Purnamawati, Heni; Poerwanto, Roedhy; Lubis, Iskandar; Yudiwanti, ,; Rais, Sri Astuti; Manshuri, Ahmad Ghozi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
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 | Full PDF (202.307 KB) | DOI: 10.24831/jai.v38i2.1793

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<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> This research was carried out in April&ndash;September 2007. The research objective was to study the dry matter distribution pattern of several peanut cultivars. Twenty cultivars were planted at two different locations, Cikarawang and Sawah Baru Experimental Field but at the same elevation (250 m above sea level). The cultivars were scored according to morphological and physiological characters, total N and total non-structural carbohydrates (TNC), yield and yield components. There were no statistically differences in pod yield, seed yield and harvest index between the cultivars, but there were differences in dry matter distribution between cultivars. TNC content in stem correlated positively with pod fi lling. Carbohydrates for pod fi lling presumed were derived from dry matter accumulation in early pod fi lling stage. It was concluded that the ideal growing type of peanut are early accumulated dry matter but almost no increase of dry matter accumulation in upper part of plant during seed development. Keywords: dry matter distribution, pod fi lling, peanut
Penentuan Dosis Optimum Pemupukan N, P, dan K pada Tanaman Kacang Bogor [Vigna subterranea (L.) Verdcourt] Lestari, Sri Ayu Dwi Ayu Dwi; Melati, Maya; Purnamawati, Heni
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 43 No. 3 (2015): Jurnal Agronomi Indonesia
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 | Full PDF (346.532 KB) | DOI: 10.24831/jai.v43i3.11244

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ABSTRACTBambara groundnut is considered tolerant to drought and unfertile soil; therefore, has higher potential to be cultivated. The average yield of dry pod weight from agricultural fields in Indonesia is still low (< 4 ton ha-1); hence, the cultivation technique must be improved. Fertilizer is the main input to increase yield of Bambara groundnut, but the optimum rates of N, P, and K have not been determined. Therefore, the objectives of the research were to determine the optimum rate of N, P, and K fertilizer for Bambara groundnut production. Three parallel experiments were conducted at Cikarawang Experimental State, Dramaga, Bogor from March to July 2013. Each experiment tested different rates of N or P or K fertilizer with compeletely randomized block design and three replications. The fertilizer rates were 0, 50, 100, 150, and 200% of recommendation rate (100% N = 100 kg Urea ha-1, 100% P = 150 kg SP-36 ha-1, 100% K = 75 kg KCl ha-1). The results showed that leaf P content increased linearly with N fertilizer application. Leaf N content linearly decreased with P fertilizer application. Leaf P content and shoot dry weight quadratically increased with K fertilizer application. The optimum rates of N and P fertilizer was unable to be determined due to insignificant response of several variables. Optimum rate of K fertilizer ranged 86.4-118.95 kg KCl ha-1.Keywords: leaf nutrients, multi nutrient response, recommendation rate
Produksi Kacang Tunggak (Vigna unguiculata [L.] Walp) dengan Input Pupuk Rendah Fadillah, Resti; Purnamawati, Heni; Supijatno
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 48 No. 1 (2020): Jurnal Agronomi Indonesia
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 | Full PDF (429.077 KB) | DOI: 10.24831/jai.v48i1.27597

Abstract

Kacang tunggak memiliki prospek sebagai pengganti kedelai, sebagai bahan baku tempe. Perlu dikaji pemupukan dosis rendah pada produksi kacang tunggak. Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi pupuk kandang dan Nitrogen terhadap pertumbuhan dan produksi tanaman kacang tunggak. Penelitian dilakukan di Kebun Percobaan Cikabayan, Institut Pertanian Bogor, pada bulan Novemeber 2018-Maret 2019, dengan menggunakan rancangan split plot. Petak utama aplikasi pupuk kandang kambing terdiri dari tiga taraf yaitu 0, 2.5, dan 5 ton ha-1. Anak petak terdiri atas empat taraf yaitu 0, 15, 30, dan 45 kg pupuk N ha-1. Hasil penelitian menunjukkan pemberian pupuk kandang meningkatkan bobot segar daun, jumlah tandan bunga, pada 5 minggu setelah tanam (MST). Pemberian nitrogen meningkatkan bobot segar daun, indeks luas daun, bobot segar akar dan jumlah bunga pada 5 MST. Kombinasi pemberian pupuk organik dengan dosis 2.5 ton ha-1 dan pupuk nitrogen 45 kg ha-1 memberikan pertumbuhan dan produksi yang cenderung lebih baik daripada tanpa pemupukan. Dengan demikian kacang tunggak dapat diproduksi dengan input pupuk kandang dan N yang rendah. Kata kunci: bobot segar daun, indeks luas daun, tandan bunga
Laju Pengisian Biji pada Beberapa Varietas Kedelai dengan Berbagai Ukuran Biji Iskandar Lubis; Purnamawati, Heni; Atmaja, ian Surya Fitra
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 48 No. 2 (2020): Jurnal Agronomi Indonesia
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 | Full PDF (452.327 KB) | DOI: 10.24831/jai.v48i2.29842

Abstract

Nitrogen merupakan unsur yang mempengaruhi pertumbuhan dan produksi tanaman kedelai. N yang tersedia untuk tanaman akan mempengaruhi luas daun pertanaman, bobot kering tanaman, dan produksi tanaman. Produksi tanaman kedelai berkaitan dengan akumulasi laju pengisian biji selama fase pengisian biji (R5-R7). Tujuan penelitian ini adalah mengevaluasi pengaruh N dan ukuran biji kedelai terhadap laju pengisian biji. Percobaan dilaksanakan pada bulan Juli sampai November 2019 di Kebun Pendidikan Cikabayan, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, IPB. Percobaan menggunakan rancangan kelompok lengkap teracak dengan dua faktor dan tiga ulangan. Faktor yang pertama merupakan dosis urea sebesar 0 dan 50 kg urea ha-1. Faktor kedua merupakan varietas kedelai yang memiliki ukuran biji berbeda. Varetas yang digunakan yaitu Tanggamus, Anjasmoro, Grobogan, Biosoy 1. Hasil penelitian menunjukkan dosis N yang diberikan ke tanaman tidak berpengaruh signifikan terhadap terhadap laju pengisian biji, tetapi cenderung dapat meningkatkan laju pengisian biji pada akhir periode pengisian biji. Dosis N mempengaruhi besarnya N yang diremobilisasi dan cenderung meningkatkan bobot kering yang diremobilisasi walaupun tidak berbeda nyata. Kata kunci: bobot kering, laju asimilasi bersih, laju pengisian biji, laju pertumbuhan tanaman, ukuran biji
Seleksi Generasi Awal untuk Toleransi terhadap Suhu Tinggi pada Padi Wirnas, Desta; Jaisyurahman, Usamah; Marwiyah, Siti; Trikoesoemaningtyas; Purnamawati, Heni; Sutjahjo, Surjono Hadi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 48 No. 2 (2020): Jurnal Agronomi Indonesia
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 | Full PDF (336.715 KB) | DOI: 10.24831/jai.v48i2.30210

Abstract

Dampak suhu tinggi pada pertumbuhan dan produktivitas padi dapat dikurangi dengan menanam varietas toleran. Tujuan penelitian ini adalah memperoleh informasi tentang kendali genetik karakter hasil populasi bersegregasi padi pada dua tingkat stress suhu tinggi serta mengidentifikasi genotipe toleran. Penelitian dilakukan dari Agustus 2016 hingga Februari 2017. Saat fase vegetatif maksimum tetua dan populasi F3 diperlakukan di bawah dua kondisi suhu, yaitu di lantai jemur dan rumah kaca dengan suhu maksimum dan minimum rata-rata masing-masing 38.89/22,67 °C dan 41.62/23.32 °C. Karakter yang diamati adalah hasil dan komponen hasil. Hasil penelitian menunjukkan bahwa kondisi suhu tinggi mempengaruhi pertumbuhan dan hasil pada tetua dan populasi F3. Terdapat keragaman karakter agronomi padi pada kondisi cekaman suhu tinggi. Jumlah gabah isi per malai adalah satu-satunya karakter yang dikendalikan oleh aksi gen aditif dengan nilai heritabilitas tergolong tinggi pada cekaman suhu di lantai jemur dan dalam rumah kaca sehingga karakter ini dapat digunakan untuk mengidentifikasi individu toleran pada generasi awal. Terdapat 13 individu yang toleran terhadap cekaman suhu tinggi berdasarkan nilai SSI. Karakter bobot gabah isi dikendalikan oleh gen-gen non aditif sehingga dianjurkan seleksi untuk peningkatan bobot gabah isi dilakukan pada generasi lanjut. Metode SSD direkomendasikan sebagai metode untuk perbaikan toleransi terhadap suhu tinggi dikombinasikan dengan metode shuttle breeeding. Kata kunci: fertilitas, indeks, perubahan iklim, toleran
Co-Authors , 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 Atmaja, ian Surya Fitra Aulia Rahmawati Aulia Rahmawati, Aulia Bagus Arrasyid Darmasandi, Arjuna Puji 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 Fajri, Atikah Fibrika Rahmat Basuki, Fibrika Rahmat Fitratunnisah Fitri Alfiyah Fitrianingrum Kurniawati, Fitrianingrum Gultom, Sandry Gustiningsih, Dini HAJRIAL ASWIDINNOOR Hartini Kilbaren, Muji Higuchi, Hirokazu Hulu, Versi Putra Jaya Husna Hutabarat, Saut Mangasi Irfan Rabani Iska, Fachrul Rohimin 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 , Maulidiya, Sherly Eka Maya Melati Mentari, Bunga Permata Muhamad Syukur Muhammad Sukma Alfian Muhammad Syukur 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 Slamet Susanto Sofyan Zaman 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 Velisitas Eklemis, Marta Yuliani Windi Habsari Yandra Arkeman Yandra Arkeman Yudiwanti W. E. Kusumo Yudiwanti Wahyu E. Kusumo Zuliati, Septiarini