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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Agrohorti Bulletin (e-Journal) Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu Pertanian Jurnal Hortikultura AGRIVITA, Journal of Agricultural Science Jurnal AGROSAINS dan TEKNOLOGI JURNAL PERTANIAN PRESISI (JOURNAL OF PRECISION AGRICULTURE) Journal of Tropical Crop Science jurnal Ilmu Pertanian (Agricultural Science) Agro Sintesa : Jurnal Ilmu Budidaya Pertanian

Muhammad dan Heni Purnamawati Haryadi Danang Faqihhudin

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 349279

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Determination of the Optimum Rate of N Fertilizers with Addition of Goat Manure for Production of Cowpea (Vigna unguiculata [L.] Walp) Liana, Devi; Purnamawati, Heni; Melati, Maya; Wahyu, Yudiwanti
Journal of Tropical Crop Science Vol 6 No 02 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Cowpea (Vigna unguiculata L. Walp) is one of the potential substitutes of soybean due to its similar nutritional content. This study aims to determine the optimum rate of N fertilizer for the production of cowpea, and to determine the effects of the interaction between N fertilizer rates and goat manure application on cowpea production. The experiment was organized in a split-plot with a complete randomized block design with three replications. The main plot was goat manure, i.e. 0 and 5 tons.ha-1; the sub-plot was nitrogen fertilizer with five rates (0, 50, 100, 150, and 200% of the recommended rate), i.e. 0, 22.5, 45, 67.5, and 90 kg N.ha-1. Application of N fertilizer reduced the 100-seed weight and slightly reduced cowpea yield and yield components. Application of goat manure increased seed dry weight per plant, number of pods per plant, dry pod weight per plant, seed dry weight per m2, productivity, 100-seed weight, and the harvest index. There was no significant interaction between goat manure and different rates of nitrogen in affecting cowpea growth.

Sources and Rates of Potassium for Drip Irrigation of Polyethylene-mulched Bean Production Hulu, Versi Putra Jaya; Purnamawati, Heni; Susila, Anas Dinurrohman; Susanto, Slamet
Journal of Tropical Crop Science Vol 6 No 03 (2019): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Common bean is a type of vegetable that can be consumed in the form of young pods. Potassium is one of the macronutrients needed to achieve maximum yield in common bean. Therefore this research is aimed at determining a suitable potassium source as well as an appropriate rate for drip irrigation in common bean using polyethylene mulch. The study was conducted from January to May 2018 at University Farm, IPB University. This experiment was set up as a nested randomized block design with two factors i.e. potassium sources as the main factor ( KCl, ZK, and NPK), and potassium rates (0, 37.5, 75, 112.5, 150 kg of K2O per ha). Fertilizer rates were nested in the main factor and fertilizers were applied Fertilization through a drip irrigation fertigation system with emitters placed close to the roots of plants. Fertilizer sources had significant effects on the variables of growth and bean yields. NPK resulted in a better growth and yield compared with KCl and ZK. Fertilizer sources that have very significant effect were likely related to the shape and solubility of the fertilizers, the ease of application, and also completeness of nutrient content in fertilizer. Based on the pod weight per plot, the productivity per hectare of bean pods produced in this study reached 7.52 ton.ha-1. Potassium (K2O) rate did not have significant effects on the variables of growth and yields of the bean.

Dampak Suhu Tinggi terhadap Pertumbuhan dan Hasil Tanaman Padi Usamah Jaisyurahman; Desta Wirnas; Trikoesoemaningtyas; Heni Purnamawati
Indonesian Journal of Agronomy Vol. 47 No. 3 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Global warming becomes a pressure in food production sustainability because it affected crop growth and development. The purpose of this study was to obtain information on the effect of high-temperature stress on the growth and development phase of rice and to evaluate the genotype for tolerance to high-temperature stress. Two environment conditions were used in the field and greenhouse of IPB Cikabayan experimental field, IPB University from August 2016 until February 2017. The study used varieties of IPB 4S, IPB 6R, Mekongga, and Situ Patenggang. High-temperature treatment was done by transferring the rice plants to the greenhouse at 50 days after transplanting. Observations were made on the generative phase in two different environmental conditions. The results showed that the total tillers number, filled grain number per panicle, unfilled grain number per panicle, total grain number per panicle, grain filling rate, percentage of filled grain and filled grain weight per plant had different responses among rice genotypes due to high-temperature stress. High-temperature decreased pollen fertility in all genotypes, which classified IPB 4S as a sensitive genotype and Mekongga as a tolerant genotype. This information could be useful for development and improving rice variety to anticipate high-temperature stress. Keywords: Climate change, fertility, pollen, stress tolerance index

Pengaruh Pemberian Mulsa dan Irigasi pada Pertumbuhan dan Hasil Bawang Merah (Allium cepa L. var. agregatum) Septiarini Zuliati; Eko Sulistyono; Heni Purnamawati
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

Ketersediaan air untuk tanaman dapat dipertahankan dengan pemberian irigasi dan penggunaan mulsa. Penelitian ini dilakukan untuk mendapatkan volume irigasi pada berbagai jenis mulsa yang efisien untuk tanaman bawang merah varietas Bima Brebes. Rancangan penelitian tersusun secara acak kelompok dengan dua faktor dan tiga ulangan. Faktor pertama adalah tingkat volume irigasi berdasarkan evaporasi panci (Eo) yang terdiri dari 6 taraf yaitu 0.25 Eo, 0.50 Eo, 0.75 Eo, 1.00 Eo, 1.25 Eo, dan 1.50 Eo. Faktor kedua adalah jenis mulsa yang terdiri dari 3 taraf yaitu tanpa mulsa, mulsa plastik hitam perak, dan mulsa jerami. Interaksi antara volume irigasi dan jenis mulsa meningkatkan pertumbuhan tinggi tanaman, jumlah daun, jumlah anakan, volume akar, jumlah akar, bobot kering, diameter umbi, dan bobot basah umbi per rumpun. Kombinasi volume irigasi 1.50 Eo dengan mulsa plastik menghasilkan bobot basah umbi tertinggi dan tidak berbeda nyata dengan volume irigasi 0.50 Eo dan 0.75 Eo pada mulsa plastik serta volume irigasi 1.00 Eo dan 1.50 Eo tanpa pemberian mulsa. Kombinasi volume irigasi 0.50 Eo dengan pemakaian mulsa plastik direkomendasikan untuk alasan efisiensi pemakaian air dan penggunaan air yang lebih sedikit. Kata kunci: diameter umbi, evaporasi, mulsa plastik plastik hitam perak, mulsa jerami

Penentuan Dosis N, P, dan K Optimum untuk Padi Gogo Kultivar Mayas Lokal Kalimantan Bagus Arrasyid; Iskandar Lubis; Suwarto; Heni Purnamawati
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

ABSTRACT A balanced fertilizer is an effective method for increasing rice production and maintaining environmental sustainability. This study objective was to determine optimum dosage of N, P, K fertilizers for Mayas variety of upland rice. The research was conducted from January to July 2019 on the Leuwikopo Experimental Station of IPB University, Bogor. This work was consisted of three parallel experiments each for N, P, K fertilizer. The treatment was fertilizer dosage, i.e. 0, 50, 100, 150, and 200% of the reference (100% N = 150 kg Urea ha-1, 100% P = 100 kg SP36 ha-1, 100% K = 100 kg KCl ha-1). All treatments were arranged in a randomized complete group design. The results from variables observed are converted to relative yield and a quadratic equation is made to determine the optimum fertilizer dosage for N, P, and K of Mayas upland rice, i.e. 174.79% N, 90.76% P2O5, 77.14% K2O from reference similar to 120.60 kg N, 32.67 kg P2O5, 46.28 kg K2O ha-1 or 261.18 kg urea, 90.76 kg SP36, 77.14 kg KCl ha-1. Keywords: relative yield, multi nutrient response, recommendation dosage

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

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

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.

Akumulasi dan Distribusi Bahan Kering pada Beberapa Kultivar Kacang Tanah Heni Purnamawati; Roedhy Poerwanto; Iskandar Lubis; , Yudiwanti; Sri Astuti Rais; Ahmad Ghozi Manshuri
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

This research was carried out in April–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

Peanut Cultivar Differences in Yield Based on Source and Sink Characteristics Iskandar Lubis; Heni Purnamawati; Roedhy Poerwanto; , Yudiwanti; Ahmad Ghozi Mansyuri; Sri Astuti Rais
Indonesian Journal of Agronomy Vol. 40 No. 3 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was conducted to determine peanut cultivar differences in sink and source sizes as represented by vegetative growth and yields. Two sets of experiments were conducted at Bogor Agricultural University farms, Sawah Baru and Cikarawang (06o33’, S, 106o45’E, 250 m altitude). Planting was conducted on June 12 and June 20, 2007 using 20 local and national cultivars in each location. Both experiments used randomized complete block design with three replications. Data were analyzed using correlation and regression analysis. Size of experimental unit was 1.6 m x 4.0 m, with planting density 125,000 plants ha-1. Urea, SP36 and KCl were applied at planting date in the rate of (kg ha-1) 45 N, 100 P2O5 and 50 K2O. Four stages of plant growth were studied: 25 days after planting (DAP); 6 weeks after planting (WAP); 10 WAP (pod filling) and 14 WAP (harvest). Five plants were sampled at 25 DAP, two plants at 6 WAP, 10 WAP and 14 WAP, and separated into leaves, stems, roots and pods. The average yield of two experimental stations showed that Biawak cultivar had the highest yield due to relatively higher aboveground dry weight (source), pod filling percentage and maximum number of gynophor+pods (potential sink). Jepara cultivar had the lowest yield due to low pod filling percentage and potential sink, although its source was considered to be in the medium category. Above ground dry weight at 6 and 10 WAP had close relation with Crop Growth Rate (CGR) during 25 DAP-6 WAP and 6-10 WAP, and the higher CGR during those periods were more related to leaf area index than to single leaf photosynthetic capacity. Keywords: crop growth rate, pod filling percentage, leaf area index, single leaf photosynthetic capacity

Penentuan Dosis Optimum Pemupukan N, P, dan K pada Tanaman Kacang Bogor [Vigna subterranea (L.) Verdcourt] Sri Ayu Dwi Ayu Dwi Lestari; Maya Melati; Heni Purnamawati
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

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

Co-Authors , Yudiwanti , Yudiwanti . Sugiyanta, . Adolf Pieter Lontoh, Adolf Pieter Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri AHMAD JUNAEDI Ahmad Junaedi Alfian, Muhammad Sukma Anas Dinurrohman Susila Anas Dinurrohman Susila Anggita Perdana Arinal H.I. Nurrahma Arinal Haq Izzawati Nurrahma Atmaja, ian Surya Fitra Aulia Rahmawati Aulia Rahmawati, Aulia Bagus Arrasyid Desta Wirnas Dian Diani Tanjung Didy Sopandie Edi Santosa Eko Sulistyono Etty Pratiwi, Etty Fachrul Rohimin Iska Firmansyah Aznur Gultom, Sandry Hulu, Versi Putra Jaya Hutabarat, Saut Mangasi ian Surya Fitra Atmaja Iska, Fachrul Rohimin Iskandar Lubis Juang Gema Kartika Jun-Ichi Sakagami Kurniawan, Rizal Mahdi Kusumo, Yudiwanti W. E. Laksono Trisnantoro Liana, Devi Luh Made Indah Sri Handari Adiputra Lutfy Ditya Cahyanti Magana, Richard Elisha Maya Melati Muhammad Sukma Alfian MUNIF GHULAMAHDI Nofi Anisatun Rokhmah Nugroho, Sasmoyo Adi Nurgama, Prama Nurul Khumaida Nurul Khumaida Nurul Khumaida Perdana, Anggita Prama Nurgama Ratna Suminar Ratna Suminar Resti Fadillah Rika Riyani Riyanti, Shoni Rizal Mahdi Kurniawan ROEDHY POERWANTO Salsabila Sandry Gultom Sasmoyo Adi Nugroho Saut Mangasi Hutabarat Septiarini Zuliati Shiraiwa, Tatsuhiko Shoni Riyanti Slamet Susanto Sofyan Zaman Sri Astuti Rais Sri Astuti Rais Sri Ayu Dwi Ayu Dwi Lestari Sugiyanta Supijatno, . Surjono Hadi Sutjahjo Suwarto TRI KOESOEMANINGTYAS Trikoesoemaningtyas Ummu Kalsum Ummu Kalsum Ummu Kalsum Usamah Jaisyurahman Yudiwanti W. E. Kusumo Yudiwanti Wahyu

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