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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (806.186 KB) | DOI: 10.29244/jtcs.6.02.121-128

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.94 KB) | DOI: 10.29244/jtcs.6.03.182-192

Abstract

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
Jurnal Agronomi Indonesia (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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.017 KB) | DOI: 10.24831/jai.v47i3.24892

Abstract

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) Eko Sulistyono; Heni Purnamawati; Zuliati, Septiarini
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 (390.874 KB) | DOI: 10.24831/jai.v48i1.29191

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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 Iskandar Lubis; Suwarto; Heni Purnamawati; Arrasyid, Bagus
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 (380.626 KB) | DOI: 10.24831/jai.v48i1.29213

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ABSTRAK Pemupukan berimbang adalah metode yang efektif untuk meningkatkan produksi padi dan menjaga keberlanjutan lingkungan. Tujuan penelitian ini adalah untuk menentukan dosis optimum pupuk N, P, K untuk padi gogo kultivar Mayas. Penelitian dilaksanakan pada bulan Januari sampai dengan Juli 2019 di lahan Kebun Percobaan Leuwikopo, IPB University, Bogor. Percobaan terdiri atas tiga percobaan paralel untuk N, P dan K dengan tingkat dosis pupuk berbeda menggunakan rancangan kelompok lengkap teracak sebanyak tiga ulangan. Dosis pupuk yang digunakan yaitu 0, 50, 100, 150, dan 200% dari acuan (100% N = 150 kg Urea ha-1, 100% P = 100 kg SP36 ha-1, 100% K = 100 kg KCl ha-1). Hasil dari peubah yang diamati dikonversi menjadi hasil relatif dan persamaan kuadrat dibuat untuk menentukan dosis pupuk N, P dan K optimum padi gogo Mayas, yaitu 174.79% N, 90.76% P2O5, dan 77.14% K2O dari acuan yang setara dengan 120.60 kg N, 32.67 kg P2O5, dan 46.28 kg K2O ha-1 atau 261.18 kg urea, 90.76 kg SP36, dan 77.14 kg KCl ha-1. Kata kunci: hasil relatif, multi nutrient response, dosis rekomendasi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.663 KB) | DOI: 10.24831/jai.v40i3.6825

Abstract

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
Pertumbuhan dan Produksi Kacang Bogor (Vigna subterranea (L.) Verdcourt) pada Beberapa Jarak Tanam dan Frekuensi Pembumbunan Aulia Rahmawati; Heni Purnamawati; Yudiwanti W. E. Kusumo
Buletin Agrohorti Vol. 4 No. 3 (2016): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (231.644 KB) | DOI: 10.29244/agrob.v4i3.14260

Abstract

Penelitian ini bertujuan untuk mendapatkan jarak tanam yang optimal dan frekuensi pembumbunan yang tepat untuk mendapatkan hasil panen terbaik. Penelitian ini menggunakan rancangan kelompok lengkap teracak (RKLT) faktorial dengan dua faktor dan tiga ulangan. Faktor pertama adalah jarak tanam yang terdiri atas enam taraf, yaitu 40 cm x 25 cm, 50 cm x 25 cm, 60 cm x 25 cm, 40 cm x 40 cm, 50 cm x 50 cm, dan 60 cm x 60 cm. Faktor kedua adalah frekuensi pembumbunan yang terdiri dari dua taraf yaitu dua kali pembumbunan dan tiga kali pembumbunan. Hasil penelitian menunjukkan jarak tanam berpengaruh nyata terhadap peubah jumlah daun, lebar kanopi, indeks luas daun (ILD), bobot brangkasan kering per tanaman, bobot polong basah per tanaman, bobot polong kering per tanaman, bobot biji per tanaman, jumlah polong bernas per tanaman, jumlah tanaman yang dipanen, bobot polong basah petak, bobot polong kering petak, dan bobot biji petak, sedangkan frekuensi pembumbunan hanya berpengaruh pada bobot brangkasan kering per tanaman. Jarak tanam 60 cm x 25 cm dan 40 cm x 40 cm memberikan hasil panen terbaik dan sesuai digunakan dalam budidaya kacang bogor.
Penggunaan Pupuk Cair Hayati Berbahan Dasar Sawi Putih dan Keong untuk Meningkatkan Produksi Sawi Putih (Brassica pekinensis (Lour)) Prama Nurgama; Heni Purnamawati; Juang Gema Kartika
Buletin Agrohorti Vol. 3 No. 2 (2015): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.712 KB) | DOI: 10.29244/agrob.v3i2.14920

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Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan PCH sebagai substitusi pupuk anorganik untuk produksi sawi putih sehingga dapat meningkatkan kesejahteraan petani. Penelitian ini dilaksanakan di Desa Gedepangrango, Kecamatan Kadudampit, Kabupaten Sukabumi mulai bulan Januari hingga Mei 2011. Penelitian ini menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan satu faktor perlakuan yang terdiri atas 13 macam perlakuan dan menggunakan empat kali ulangan, sehingga terdapat 52 satuan percobaan. Hasil penelitian menunjukan bahwa pada parameter tinggi tanaman perlakuan 1 440 L PCH keong ha-1 menghasilkan tinggi krop tertinggi yaitu 29.94 cm, sedangkan untuk parameter lingkar horizontal, lingkar vertikal dan diameter 2, perlakuan 200 kg NPK ha-1 + 720 L PCH keong ha-1 yang menghasilkan nilai tertinggi dengan nilai masing-masing berturut 34.42 cm, 68.33 cm, dan 9.31 cm. Perlakuan 300 kg NPK ha-1 + 360 L PCH keong/ha menunjukan hasil tertinggi untuk parameter diameter 1 yaitu sebesar 11.04. Perlakuan 100 kg NPK ha-1 + 1080 L PCH campuran (sawi+keong) ha-1 menghasilkan bobot rata-rata tajuk tanaman tertinggi yaitu 996.43 g per tanaman. Secara umum perlakuan 200 kg NPK ha-1 + 720 L PCH keong ha-1 menunjukan hasil terbaik berdasarkan uji hedonik oleh 30 panelis terhadap semua parameter yang diujikan yaitu warna, bentuk, ukuran, kerenyahan, dan kesukaan.
Penetapan Umur Panen Kacang Tanah (Arachis hypogaea L.) Berdasarkan Metode Akumulasi Satuan Panas dan Kematangan Polong Sasmoyo Adi Nugroho; Heni Purnamawati; Yudiwanti Wahyu
Buletin Agrohorti Vol. 4 No. 1 (2016): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (530.333 KB) | DOI: 10.29244/agrob.v4i1.14995

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Percobaan ini bertujuan untuk menentukan umur panen tiga varietas kacang tanah (Arachis hypogea L.) berdasarkan akumulasi satuan panas. Percobaan ini dilakukan di Kebun Percobaan Leuwikopo Institut Pertanian Bogor dan Laboratorium Pascapanen Departemen Agronomi dan Hortikultura IPB pada bulan Maret hingga Juni 2014. Percobaan terdiri atas dua faktor, yaitu varietas (sebagai petak utama) dan waktu panen (sebagai anak petak) yang disusun petak terbagi (split plot) dengan tiga ulangan. Hasil penelitian menunjukkan bahwa Varietas Domba, Badak, dan Panther mulai berbunga pada 24 HST. Varietas Badak dan Panther mencapai 50% populasi tanaman berbunga dengan akumulasi satuan panas 528.2 0Cd pada umur panen 30 HST, sedangkan varietas Domba mencapai 50% populasi tanaman berbunga dengan akumulasi satuan panas 562.7 0Cd pada saat 32 HST. Varietas Domba dan Panther dengan akumulasi panas 1764.2 0Cd pada umur panen 100 HST, sedangkan varietas Badak di panen pada akumulasi satuan panas 1851.4°Cd dengan umur panen 105 HST.
Manajemen Panen Kelapa Sawit (Elaeis guineensis Jacq.) di Sungai Bahaur Estate, Kotawaringin Timur, Kalimantan Tengah Saut Mangasi Hutabarat; Heni Purnamawati
Buletin Agrohorti Vol. 4 No. 1 (2016): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.586 KB) | DOI: 10.29244/agrob.v4i1.15004

Abstract

Magang bertujuan untuk mengetahui dan memahami secara khusus manajemen pemanenan perkebunan kelapa sawit. Pengamatan yang dilakukan meliputi perhitungan angka kerapatan panen, kebutuhan tenaga panen, kualitas pekerjaan panen, pelanggaran dan denda panen, kriteria panen dan mutu hanca panen. Hasil pengamatan menunjukkan manajemen pemanenan di kebun SBHE kurang baik. Hasil pengamatan menunjukkan jumlah tenaga kerja di lapangan lebih tinggi dari kebutuhan tenaga kerja panen. Kualitas pekerjaan panen masih di bawah standar kebun. Pemanen memotong buah kurang matang lebih tinggi dari toleransi standar kebun dan pemanen memotong buah matang lebih rendah yaitu 79% dari standar minimal kebun yaitu 85%. Perlu adanya pengawasan pemanenan dan pemberian pemahaman kepada pemanen sehingga kualitas sesuai dengan standar perusahaan. Pemberlakuan denda dapat meningkatkan rasa tanggung jawab pemanen terhadap hancaknya.
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 Riyanti, Shoni Rizal Mahdi Kurniawan Roedhy Poerwanto rusdan, Risna 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