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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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The Role of Biomulch Arachis pintoi In Increasing Soil Infiltration Rate on Sloping Land of Oil Palm Plantation Sarjono, Arif; Guntoro, Dwi; Supijatno, Supijatno
Journal of Tropical Crop Science Vol 5 No 3 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The slope of land in oil palm plantation areas is the one of the primary causes of low soil water content due to low rates of soil infiltration. Biomulch is one of the conservation methods that can be used to cover and shield the soil from weeds, prevent soil erosion, and increase the rate of soil infiltration. Arachis pintoi is a perennial, stoloniferous legume crop that has potentials to be used as biomulch. The objective of the research was to study the role of Arachis pintoi in increasing the rate of soil infiltration on a sloping land of oil palm plantation. The research was conducted on the slope land (22.8%) of the Bukit Kemuning Farmer Group, Mersam, Batanghari, Jambi, Indonesia (01036'21", 102057'11") from September 2017 to March 2018. The environmental design used in this study was a one-factor randomized block design (RBD) with five ground cover treatments, i.e. natural vegetation, Arachis pintoi, Centrosema pubescens, Pueraria javanica and Calopogonium mucunoides. The results showed that the average growth rate of A. pintoi was 2.47 cm per week, which was lower than the growth of other treatments. The root length of A. pintoi was 50.36 cm at 20 weeks after planting. A. pintoi can be used as biomulch; sloping land planted with A. pintoi had an infiltration rate of 49.30 cm per hour at 20 week after planting, i.e. an increase of 32.47% compared to the infiltration rate with the natural vegetation.Keywords: land cover crop, Centrosema pubescens, Pueraria javanica, Calopogonium mucunoides

Produksi Kacang Tunggak (Vigna unguiculata [L.] Walp) dengan Input Pupuk Rendah Resti Fadillah; Heni Purnamawati; 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

Cowpea is prospective as a substitute for soybeans, as raw material for tempeh. In this study, low inputs of cowpea production is proposed. This study aimed to determine the effect of manure and nitrogen fertilizer on the growth and production of cowpea. The study was conducted at the Cikabayan Experimental Station, IPB, Bogor, Indonesia, from November 2018 to March 2019, using a split-plot design. As the main plot was goat manure rates consisted of 0, 2.5, and 5 tons ha-1. The subplots consisted of four rates of nitrogen, namely 0, 15, 30, and 45 kg N ha-1. The results showed that the application of manure increased the fresh weight of the leaf, the number of flower bunches, and the number of flowers. The application of N fertilizer increased leaf fresh weight, leaf area index, dry root weight, and shoot/root ratio at five weeks after planting. The combination of organic fertilizer with a dose of 2.5 tons ha-1 combined with 45 kg ha-1 nitrogen fertilizer tends to give better productivity than without fertilizer. Thus, cowpea can be produced using low input of manure and N. Keywords: leaf area index, leaf weight, flower bunches

Pengelolaan Pemetikan Tanaman Teh (Camellia Sinensis (L.) O. Kuntze) di Unit Perkebunan Tambi, Kabupaten Wonosobo, Jawa Tengah Maulia, Kantrin; Supijatno, .
Buletin Agrohorti Vol. 6 No. 1 (2018): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Kegiatan penelitian dilaksanakan selama empat bulan mulai Februari hingga Juni 2016 di Unit Perkebunan Tambi. Tujuan dari kegiatan penelitian adalah memperluas pengetahuan mengenai budidaya teh, menambah pengalaman, dan mempelajari pengelolaan pemetikan pada tanaman teh di Unit Perkebunan Tambi. Metode yang dilakukan pada saat penelitian yaitu menggunakan metode langsung (data primer) dan metode tidak langsung (data sekunder). Pemetikan jendangan dilakukan ketika tanaman berumur 3 bulan setelah pangkas dan persentase tunas dengan tinggi lebih dari 15 cm mencapai 77.97%. Tinggi bidang petik mencapai 67.9-100.6 cm. Kapasitas petik mencapai 82.39 kg/HK dan tidak dipengaruhi oleh usia serta lama pengalaman kerja. Gilir petik berkisar 40-50 hari. Tenaga petik sebanyak 147 orang. Petikan halus 1.84%, petikan medium 43.12%, petikan kasar 26.34% dan petikan rusak 28.87%. Analisis pucuk Memenuhi Syarat (MS) 47%-49% dan pucuk Tidak Memenuhi Syarat (TMS) 50%-52% sehingga perlu ditingkatkan agar tidak hanya menghasilkan kuantitas pucuk yang tinggi namun kualitas pucuk juga tinggi.

Study of Intercropping System and In Situ Organic Matter Application on Coffee Agroforestry at Citarum Watershed, West Java, Indonesia Kusnendi, Faizal Shofwan; Supijatno, Supijatno; Wachjar, Ade; Hidayat, Yayat; Suseno, Sugeng Heri
Journal of Tropical Crop Science Vol 7 No 02 (2020): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Agroforestry-based coffee is one of the conservation efforts to restore the damages at the Citarum watershed. Planting annual crops between coffee rows could potentially contribute income for the growers during the immature non-productive coffee growth. The aims of the research is to study the effect of various types of agroforestry models in the upstream Citarum watershed on the growth of coffee, and growth and yields of the intercrops. The research was conducted in September 2018 to June 2019 at the upstream Citarum watershed of Tarumajaya Subdistrict Kertasari, Bandung Regency, West Java, Indonesia. The research was arranged with a randomized block design with two factors. The first factor was the cropping system, i.e. coffee monoculture, coffee and corn, coffee and sweet corn, coffee and red beans, and coffee and habanero chili. The second factor was organic matter application, i.e. with and without application of in situ organic matter. The results of the research showed that coffee intercropped with habanero with application of in situ organic matter had the best vegetative growth, indicated by taller plants, more leaves, increased leaf P and Mg levels, and the maximum income from the intercrop. Coffee intercropped with corn with application of in situ organic matter had a maximum corn production but had the lowest income. Therefore, the model of coffee intercropped with habanero chili with application of in situ organic matter was the best model from several intercropping systems tested.

Morfologi dan Produksi Beberapa Aksesi Sagu (Metroxylon spp.) di Distrik Iwaka, Kabupaten Mimika, Papua [Morphology and Production of Some Sago Palm Accessions in Iwaka, Mimika District, Papua Province] Ahmad, Fendri; Bintoro, Mochamad Hasjim; Supijatno, Supijatno
Buletin Palma Vol 17, No 2 (2016): Desember, 2016
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/bp.v17n2.2016.115-125

Sago is a carbohydrate-producing palm witharea about 382.198 ha in Mimika Regency. So far, research on the characterization of sago palm in this area has not existed, therefore it is necessary to do. The diversity of sago accessions in Mimika District is expected to be a source of germplasm and superior sago selection to support sago development. This study aims to obtain information about morphological characters and starch production of some sago accessions. The study was conducted using observation method of seven sago accessions, namely Mbupuri, Monepikiri, Mbapare, Tuwae, Aute, Iyaremeta and Bakaketemeta in Iwaka District, Mimika Regency, Papua Province. The result showed that the seven accessions sago differed based on morphological character namely stem, leaves and spine, and starch production. The Monepikiri accession has the longest stem and large stem diametre, namely 13.75 m and 59.00 cm, respectively. Accession Mbupuri has more leaves and wider leaves than the others. Accession Monepikiri has a production potential of more than 300 kgâ€™s dried starch/palm and accession Mbupuri more than 200 kgâ€™s dried starch/palm. Both accessions of this sago can be further investigated the stability of yield starch to be released as superior varieties. The morphological characters, especially the length of the stem affect the starch production because the starch is present in the pith of the stem.ABSTRAKSagu merupakan tanaman sumber karbohidrat dengan luas areal di Kabupaten Mimika 382.198 ha. Penelitian tentang karakterisasi aksesi sagu di Kabupaten ini belum ada, oleh karena itu perlu dilakukan. Keragaman aksesi sagu di Kabupaten Mimika diharapkan menjadi sumber plasma nutfah sagu, dan untuk seleksi sagu unggul untuk menunjang pengembangan sagu. Penelitian ini bertujuan untukÂ mendapatkan informasi mengenai karakter morfologi dan produksi pati beberapa aksesi sagu. Penelitian menggunakan metode observasi terhadap tujuh aksesi sagu, yaitu Mbupuri, Monepikiri, Mbapare, Tuwae, Aute, Iyaremela dan Bakaketemeta. Penelitian dilakukan di Distrik Iwaka, Kabupaten Mimika, Provinsi Papua. Hasil penelitian menunjukkan bahwa ketujuh aksesi tersebut berbeda karaktermorfologinya, yaituÂ batang, daun dan duri. Aksesi Monepikiri memiliki batang yang paling panjang dan diameter paling besar berturut-turut, yaitu 13,75 cm dan 59,00 cm. Aksesi Mbupuri memiliki jumlah daun paling banyak dan daun paling luas.Aksesi Monepikiri memiliki potensi produksi lebih dari 300 kg pati kering/pohon dan aksesi Mbupuri >200 kg pati kering/pohon. Kedua aksesi ini dapat diteliti lebih lanjut kestabilan hasilnya untuk dilepas sebagai varietas unggul. Karakter morfologi khususnya panjang batang mempengaruhi produksi, karena pati terdapat dalam empulur batang.

Pengaruh Beberapa Jenis Pupuk Hayati terhadap Pertumbuhan Dua Klon Tanaman Teh (Camellia sinensis (L) O. Kuntze) Belum Menghasilkan Ade Wachjar; , Supijatno; Dina Rubiana
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 34 No. 3 (2006): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The experiment was carried out to study the effect of biofertilizer on the growth of two clones of young tea. This experiment was conducted at Cikabayan Experiment Station, Faculty of Agricuture, IPB, Bogor, from July to November 2000. This experiment was arranged in Split Plot Design with three replications. The main factor was clone types consisted of two clones i.e.: RB 3 and Gambung 5, whereas the sub factor was biofertilizer consisted of five kinds i.e. : EMAS + 50 % inorganic fertilizer recommended dosage (i.f.r.d.), EM4 + 50 % i.f.r.d., OST + 50 % i.f.r.d., Soils Plus + 50 % i.f.r.d. and 100 % i.f.r.d. The results showed that the EMAS + 50 % i.f.r.d. and EM4 + 50 % i.f.r.d. treatments significantly increased plant height, stem diameter, leaf number, and bud length. The application of 6.25 g EMAS per plant (equivalent with 83.125 kg/ha) + 50 % i.f.r.d. and 10 ml EM4 (equivalent with 6.65 l/ha) + 50 % i.f.r.d. could reduce application of inorganic fertilizer dosage until 50 % and resulted in the growth of the plant which was better than that of inorganic fertilizer. In general, growth of the RB 3 clone was better than Gambung 5 clone. Key words : Biofertilizer, clones, vegetative growth, tea

TOLERANSI TANAMAN KEDELAI TERHADAP CEKAMAN AIR: UJI LAPANG BEBERAPA GENOTIPE TOLERAN Didy Sopandie; , Hamin; Muhammad Jusuf; , 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 Ade Wachjar; , Supijatno; Riswan Basyri Nasution
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; D. Sopandie; M. Jusuf; S. Harran
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 Eltis Panca Ningsih; 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

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

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