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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Keteknikan Pertanian Pelita Perkebunan Jurnal Penelitian Karet Journal of Regional and Rural Development Planning Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Tropical Crop Science Buletin Palma

Supijatno

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

Author-ID : 393506

Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Engineering Environmental Science Social Sciences

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TOLERANSI TANAMAN KEDELAI TERHADAP CEKAMAN AIR: UJI LAPANG BEBERAPA GENOTIPE TOLERAN Sopandie, Didy; Hamin, ,; Jusuf, Muhammad; Supijatno, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 25 No. 2 (1997): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The purpose of this field verification was to determine the stability of yield of several drought-tolerant soybean genotypes selected from green house evaluation. The plants were planted at Muneng, Probolinggo in dry season (June-September 1995) with and without irrigation. From 5 tolerant genotypes, Mlg 2999 and Mlg 3474 gave a good stability of tolerance as evidence by less significance of growth and grain yield reduction. The tolerant genotypes of Mlg 2805 and Mlg 2984 suffered from tremendous leaves and pods abcission, leading to low yield.

PENGARUH JUMLAH AJIR DAN JUMLAH DAUN PADA AJIR TERHADAP PERTUMBUHAN TUNAS DAN SAAT MANJING PETIK PERTAMA PADA PEMANGKASAN AJIR TANAMAN TEH (Camellia sinensis L.) DI DATARAN TINGGI Wachjar, Ade; Supijatno, ,; Nasution, Riswan Basyri
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 23 No. 1 (1995): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was aimed to study the effect of number of lungs and leaves at lung to growth of shoots and first time harvest at lung pruning of height land tea (Camellia sinensis). The experiment carried out at Gedeh Tea Plantation, PTPN XII, Cianjur, West Java, from December 1993 to March 1994. In this case we used tea Clone TRI 2025. The experiment was arranged in Randomized Block Design with 3 replications. The first factor, number of lungs, consisted of 3 different level : 2, 3, 4 lungs per tea. The second factor, number of leaves at lung, consisted of 3 different levels : 25, 50, and 75 leaves per lung. The Experiment showed that number of shoots and first time harvest affected by number of lungs, but number of lungs didn't affect to height of shoot, percentage of banji, wet weight shoots on tipping and first pluck production were not affected. The tea with 4 lungs had significantly greater number of shoots than 2 or 3 lungs. The earliest first harvest time was achieved by 2 lungs tea (3 to 9 days earlier), but was significant with 3 lungs tea.

FISIOLOGI DAYA ADAPTASI KEDELAI (Glycine max (L.) Merr.) TERHADAP CEKAMAN pH RENDAH DENGAN Al TINGGI Supijatno, ,; Sopandie, D.; Jusuf, M.; Harran, S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 23 No. 2 (1995): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Two AI-tolerant genotypes (KB 44001 and Genjah Jepang) and two AI-sensitive genotypes of soybean (Kedelai Lumut and KB 46015) were subjected to Al concentration (1.50 mM Al with pH 4.0) in hydroculture for 3 weeks; the growth and their physiological responses were identified by measuring the changes of pH media, NO3ˉ /NH4+ uptake, ion absorption and organic acid content in the tissues. The result revealed that Al-tolerant genotypes soybean show a much better growth than the sensitive genotypes. Moreover, the tolerant genotypes showed the different responses to Al stress; they changed the pH media more significantly, accumulated less Al in the roots and accumulated more oxalate acid than the sensitive genotypes. Both the tolerant and sensitive genotypes had similar pattern n in N03ˉ /NH4+ uptake and other cation uptake. The results suggested that tolerance of soybean genotypes to Al toxicity is associated with their ability in the exclusion AI.

Optimasi Dosis Pupuk Kalsium dan Magnesium pada Bibit Kelapa Sawit (Elaeis guineensis Jacq.) di Pembibitan Utama Ningsih, Eltis Panca; ,, Sudradjat; ,, Supijatno
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 43 No. 1 (2015): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Oil palm is one of the important plantation crops in the plantation sector. Increased oil palm plantation area causes the need for the availability of oil palm seedlings in large quantities. Good quality oil palm seedlings were obtained through intensive maintenance especially fertilization. Fertilizers needed for the growth of oil palm seedlings include calcium and magnesium fertilizers. The objective of this experiment was to determine the optimum rates of calcium and magnesium fertilizer for oil palm seedling (Elaeis guineensis Jacq.). This experiment was conducted at Cikabayan Experimental Station, IPB Darmaga, Bogor, from December 2011 to November 2012. The experimental design used was factorial randomized block design with three replications. The first factor was Ca fertilizer rates i.e., 0, 5, 10, and 20 g CaCO3 plant-1. The second factor was Mg fertilizer rates, i.e., 0, 24, 48, and 96 g MgSO4 plant-1. The results showed that calcium affected stomatal density, whereas magnesium fertilizer affected morphological and physiological variables (stomatal density and chlorophyll content) of oil palm seedling. Based on the plant height and stem diameter, the recommended rate of magnesium fertilizer for 8 months oil palm seedlings in the main nursery was 58 g plant-1. This total rate should be applied at different amount every month from 1-8 month, at 2.0, 2.0, 8.0, 9.3, 8.8, 9.3, 9.4 and 9.3 g MgSO4 plants-1, respectively. The optimum rate of calcium fertilizer was not able to be determined in this research. Keywords: chlorophyll, leaf, morphology, physiology

Optimasi Dosis Pupuk Nitrogen dan Fosfor pada Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) Belum Menghasilkan Umur Satu Tahun Shintarika, Feni; ,, Sudradjat; ,, Supijatno
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

ABSTRACTThe accuracy of fertilizer dosage for one-year-old oil palm plants is very important. The objective of the research was to determine the optimum rates of Nitrogen and Phosphorus fertilizers for young oil palm. The experiment was conducted at IPB-Cargill Teaching Farm of Oil Palm at Jonggol, from March 2013-March 2014. This study consisted of two separate experiments namely (1) Optimizing Nitrogen and (2) Optimizing Phosphorus. Both experiments used randomized block design with one factor and three replications. The treatments were five rates of nitrogen or phosphorus (0, 135, 270, 405, 540 g N per plant; 0, 135, 270, 405, 540 g P2O5 per plant). The results showed that nitrogen fertilizer rates increased height linearly at 10 month after treatment (MAT) and quadratically at 12 MAT. Stem girth, frond production and leaf area of 9th frond increased quadratically with N rates (9, 10, 12 MAT). Nitrogen fertilizer quadratically increased leaf chlorophyll content (12 MAT), but did not significantly affected leaf-N content. Phosphorus fertilizer increased palm height linearly (9, 10 MAT) and quadratically (12 MAT). Phosphorus linearly increased stem girth (12 MAT) and quadratically (9, 10 MAT). Frond production was quadratically increased with phosphorus rates (9, 10, 12 MAT). Phosphorus linearly increased leaf area of 9th frond (9 MAT) and quadratically (12 MAT). The optimum rates of nitrogen and phosphorus fertilizers for one year old plant was 382 g N and 331 g P2O5 per plant, respectively.Keywords: inorganic, nutrient, optimum rates, single fertilizer

Pertumbuhan Mucuna bracteata DC. pada Berbagai Waktu Inokulasi dan Dosis Inokulan Laksono, Purwanti Budi; Wachjar, Ade; Supijatno, dan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 1 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTMucuna bracteata DC. is a legume cover crop to prevent erosion and to suppress weed growth. M. bracteata can fix N2 from the air with the help of Rhizobium. M. bracteata get benefit from the symbiosis in the form of increased nodule weight, shoot dry weight, and leaf nitrogen content when the Rhizobium population in the soil is optimal. Application of inoculant is one method to increase the Rhizobium population in the soil. This study aimed to analyze the effects of inoculation times and inoculant rates on M. bracteata growth. The research was conducted in Boyolali, Central Jawa, from February to August 2014. The inoculant contained Bradyrhizobium japonicum and Aeromonas punctata. This experiment was arranged in a randomized block design with two factors and three replications. The first factor was two inoculation times, i.e at the nursery when the seedlings were 2 weeks old and in the field when the seedlings reached 5 weeks old. The second factor was 5 inoculant rates (0, 2, 4, 6, and 8 g per plant). The results showed that inoculation on 5-week-old seedlings was the best result compared to the 2-week-old seedlings. The recommended inoculant rate for Mucuna bracteata was 6.43 g per plant. Keywords: legume cover crop, nitrogenase activity, nodule, nutrient content, runner

Evaluasi Konsumsi Air Beberapa Genotipe Padi untuk Potensi Efisiensi Penggunaan Air Supijatno, ,; Chozin, Muhammad Ahmad; Sopandie, Didy; Trikoesoemaningtyas, ,; Junaedi, Ahmad; Lubis, Iskandar
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 40 No. 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Water use efficient varieties in rice may have good opportunity in term of economic value and scarcity of water. This study was conducted to determine water consumption among rice genotypes that conventionally cultivated as low land (IR64, IPB97-F-15, Ciherang, Mentik Wangi, and Rokan hybrid), up land (Jatiluhur, Silugonggo), and amphibian type (Way Apo Buru, that could be planted both as lowland and up land). Rice seedlings at 14 days old were transplanted in a plastic container containing 83 kg of air dried soil, 1 plant per whole and 6 plants per container. The experiment was conducted in a vinyl house, using randomized complete block design with three replications. During rice growth, water table was maintained at 2 cm above soil surface, and water was added and recorded weekly. The results showed that varieties reveal production components and yield were different significantly. Water consumptions among varieties were significantly different, ranged from 15.93 L plant-1 for IR64 to 24.13 L plant-1 for Jatiluhur, or equal with 3,639 to 4,827 m3 ha-1. Jatiluhur was the most efficient variety in using water. This finding may guide us to explore benefit of water use efficient variety as sustainable option in water management of rice cultivation.

Perbandingan Arachis pintoi dengan Tanaman Kacang-kacangan Penutup Tanah Lain dalam Menekan Laju Erosi pada Lahan Kelapa Sawit Berbukit Sarjono, Arif; Guntoro, Dwi; Supijatno, dan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 1 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Land preparation of oil palm plantation in hilly areas is vulnerable to environmental degradation. Legume cover crops can be used in vegetation system for soil conservation to control erotion. Arachis pintoi is a legume potential for cover crop. The objective of the research was to study the role of A. pintoi in suppressing soil erosion rate in oil palm land with the topography of hilly land. The research was conducted on the land of Bukit Kemuning farmer group, Mersam, Batanghari, Jambi with an average slope of 22.8% from September 2017 to March 2018. The experimental design used was a single-factor randomized complete block design with five treatments and four replications. The treatment consisted of natural vegetation, Arachis pintoi, Centrosema pubescens, Pueraria javanica and Calopogonium mucunoides. The results showed that the rate of increased leaf number of A. pintoi was 13.6 pieces per week and could cover the ground surface 100% at 20 weeks after planting (WAP). The dry weight of A. pintoi biomass was 496.08 g m-2 at 20 WAP. A. pintoi suppressed soil erosion by 80.45% as compared to natural vegetation treatment. However, it was not significantly different on suppression rates to other biomulch treatments.Keywords: biomass, Calopogonium mucunoides, Centrosema pubescens, land cover crop, Pueraria javanica

Tanggap Pertumbuhan dan Hasil Tanaman Jagung terhadap Waktu Tanam yang Berbeda Sudirman Yahya; Supijatno; Humoen, Maria Imelda
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

Determination of the appropriate sowing date can reduce the negative impact of the low water availability and solar radiation in the growth phase and yield of maize. This research aimed to (1) determine the effective sowing date to get the optimal solar radiation, water, and yields, (2) determine the appropriate varieties for the sowing date to optimize the utilization of radiation and water. The experiment was conducted at the Agricultural Technology Assessment Station (BPTP) Naibonat, NTT from February to July 2019. The three-factor factorial experiment using a split-split plot design. The main plot, namely three sowing dates were 26 February 2019, 12 March 2019, and 26 March 2019. The subplots, namely three varieties of maize consisted of Pena muti m’naes, Lamuru, and Pioneer-36. The sub-sub plot, namely 2 levels of watering consisting of not watered and watered. The results showed that the sowing date of 12 March 2019, was the appropriate sowing date and corresponding with the level of availability of water and solar radiation with more efficient use and higher levels of solar radiation interception to provide Pioneer-36 production of 8.47 tons ha-1, which was better than the production of Local and Lamuru varieties of maize at other sowing dates. This is supported by the synchronized responses of both source capacity (leaf area) and sink capacity (ear size). Keywords: leaf area index, production, varieties, watering

Asesmen Kejadian Self-Pruning pada Beberapa Jenis Tanaman Buah Tropis Paisey, Elda Kristiani; Santosa, Edi; Matra, Deden Drajat; Kurniawati, Ani; Supijatno
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 50 No. 3 (2022): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Upaya mengurangi biaya produksi tanaman buah-buahan sangat penting dalam meningkatkan daya saing. Salah satu biaya produksi pada budidaya adalah pemangkasan. Self-pruning atau cladoptosis sangat potensial untuk mengurangi biaya pemangkasan pada tanaman buah. Namun demikian, penelitian fenomena self-pruning masih sangat terbatas pada tanaman hortikultura. Tujuan penelitian adalah mengidentifikasi kejadian self-pruning pada tanaman buah dalam rangka menggali potensinya untuk menekan pelaksanaan pemangkasan. Observasi menggunakan rancangan acak kelompok dengan faktor tunggal yakni tujuh jenis tanaman buah (alpukat, jeruk siam, jambu biji, kapulasan, lengkeng, asam jawa dan jeruk nipis). Tanaman buah berumur 2.5 tahun dipelihara dalam pot drum. Pengamatan meliputi ukuran kanopi, ukuran cabang dan kejadian self-pruning pada cabang. Hasil penelitian menunjukkan adanya kejadian self-pruning pada cabang sekunder, cabang tersier, serta cabang quarter pada semua jenis tanaman. Namun demikian, atas jenis tanaman memiliki kecenderungan self-pruning pada cabang berbeda. Pada tanaman alpukat kejadian self-pruning terjadi pada jenis cabang sekunder dan tersier. Self-pruning pada cabang tersier terjadi pada tanaman lengkeng. Self-pruning pada jenis tanaman yang lain terjadi pada semua jenis cabang. Penelitian ini pertama kali mengamati kejadian self-pruning pada tanaman buah. Perlu penelitian lanjutan mengenai faktor peubah self-pruning pada tanaman buah. Kata kunci: absisi, arsitektur kanopi, cladoptosis, hortikultura, senesens

Co-Authors , Hamin . Robianto . Sudradjat . Susilawati . Susilawati . Turman Abdoellah, Soetanto Abdul Qadir Ade Wachjar Adolf Pieter Lontoh, Adolf Pieter Adrian, Fahrul AHMAD JUNAEDI Ahmad, Fendri Ahmad, Fendri Aji, Martini Albari, Jabal Aldi Radifan Alhaviz, Alhaviz Anggraini, Dwi Vista Ani Kurniawati Anisa Windhita Aris Purwanto Arja, Awliya Rahmi Awliya Rahmi Arja Aziz Ahmad Ja’far Benny Julyan Bintoro, Muhammad Hasjim Brury Marco Silalahi D. Sopandie Didy Sopandie Dr.-Ing. Dina Rubiana Widarda Dwi Guntoro Edi Santosa Eko Sulistyono Eltis Panca Ningsih, Eltis Panca Eny Widajati Evi Savitri Iriani Evi Savitri Iriani Evi Savitri Iriani, Evi Savitri Fadillah, Resti Faqih Udin Fatkhunnisa, Ratu Feni Shintarika Gabriel, Abdurrahman Gery Juliansyah Ghulam Nurul Huda Ghulam Nurul Huda, Ghulam Nurul Hariyadi Hariyadi, Hariyadi Hendra Wiguna Hulu, Versi Putra Jaya Humoen, Maria Imelda Iskandar Lubis Jabal Albari Juliansyah, Gery Julyan, Benny Kusnendi, Faizal Shofwan Laksono, Purwanti Budi M A Chozin M. Jusuf Martini Aji Martini Aji Maryati Sari Matra, Deden Drajat Maulia, Kantrin Maulia, Kantrin Miftah Anugrah Pamungkas Monica Christina Natalia Muhamad Ismail Muhamad Ismail, Muhamad Muhammad Hasjim Bintoro Djoefrie Hasjim Bintoro Djoefrie Muhammad Jusuf Mulyawan, Zidane Natalia, Monica Christina Novie Pranata Erdiansyah Nur Said Soheh Nurulhaq, Muhammad Iqbal Omo Rusdiana Paisey, Elda Kristiani Pamungkas, Miftah Anugrah Putri Ratna Sari Putri Ratna Sari, Putri Ratna Qadir, Abdul Radifan, Aldi Rahman, Hasan Basri Arif Riswan Basyri Nasution Robianto, . Rohman, Fadil S. Harran Saiful Akhyar Lubis Sarjono, Arif Sarjono, Arif Sepriana, Regina Maulidina Silalahi, Brury Marco Slamet Widodo Slamet Widodo Sofyan Zaman Sudirman Yahya Sudradjat , Sugeng Heri Suseno Syarifah Iis Aisyah Trikoesoemaningtyas Turman, . Wahyudi, Trio Widodo, Candraningratri Ekaputri Widyaningrum Widyaningrum Widyaningrum Widyaningrum Wiguna, Hendra Windhita, Anisa Yanto Ardiyanto ‪Mochamad Hasjim Bintoro Djoefrie‬

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