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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia MANAJEMEN IKM: Jurnal Manajemen Pengembangan Industri Kecil Menengah Pastura; Journal Of Tropical Forage Science Jurnal Ilmu Lingkungan Jurnal Penelitian Hasil Hutan Jurnal Sumberdaya Alam dan Lingkungan Planta Tropika Journal of Tropical Crop Science JURNAL ILMIAH MAHASISWA AGROINFO GALUH International Journal of Applied Business Research Jurnal Ilmiah Akuntansi Kesatuan Abdimas Galuh : Jurnal Pengabdian Kepada Masyarakat Riset: Jurnal Aplikasi Ekonomi Akuntansi dan Bisnis Jurnal Ilmiah Pariwisata Kesatuan Jurnal Abdimas Dedikasi Kesatuan Jurnal Aplikasi Bisnis Kesatuan International Journal of Electronics and Communications Systems Indonesian Accounting Literacy Journal Jurnal Keuangan dan Akuntansi Terapan (KUAT) Perbal: Jurnal Pertanian Berkelanjutan Balance: Jurnal Akuntansi, Auditing, dan Keuangan

Sudradjat Sudradjat

Departemen Agronomi Dan Hortikultura, Institut Pertanian Bogor

Author-ID : 388344

Religion Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Nursing Public Health Social Sciences Other

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Optimasi Paket Pupuk Tunggal pada Tanaman Kelapa Sawit Belum Menghasilkan Umur Satu Tahun Hidayat Saputra; Sudradjat ,; sudirman Yahya
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 43 No. 2 (2015): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTEffective and efficient fertilization is affected by fertilizer dose, and therefore information on the appropriate dose of a single fertilizer for oil palm will be beneficial to increase the efficiency and effectiveness of fertilization in oil palm plantations. The objectives of this research were to study the response patterns and to determine optimum rate of single fertilizer package related to the growth of one year old oil palm trees. The experiment was conducted from March 2013 to February 2014 at IPB-Cargill Teaching and Research Farm of Oil Palm, Jonggol Bogor. The experiment was arranged in randomized block design with one factor and replicated three times. The treatments were four single fertilizer package as followed: control, 300 g urea + 375 g SP-36 + 350 g KCl + 25 g boric acid + 25 g CuSO4.5H2O, 600 g urea + 750 g SP-36 + 700 g KCl + 25 g boric acid + 25 g CuSO4.5H2O, 900 g urea + 1125 g SP-36 + 1050 g KCl + 25 g boric acid + 25 g CuSO4.5H2O per plant. The result showed that application of single fertilizer package significantly increased the growth of young oil palm linearly as shown by plant height, stem girth, leaf area of frond number 9, chlorophyll and P content of the leaves and quadratically on leaf number at the last observation. The optimum rate of single fertilizer for one year old oil palm trees had not been attained at this research because the plant growth response to fertilization was still linear.Keywords: inorganic, leaf frond number 9, optimum rate, growth response, stem girth

Peranan Pupuk Organik dan NPK Majemuk terhadap Pertumbuhan Kelapa Sawit TBM 1 di Lahan Marginal Yan Sukmawan; Sudradjat ,; Sugiyanta ,
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

ABSTRACTOil palm (Elaeis guineensis Jacq.) is the most efficient vegetable oil producer. It produces five to seven times more vegetable oil per hectare than the other vegetable oil producing crops. The objective of this research was to study the role of organic and NPK compound fertilizers application to one-year-old oil palm (Elaeis guineensis Jacq.) on marginal land. The research was conducted at IPB-Cargilll Teaching Farm of Oil Palm, Jonggol, Bogor, West Java from March 2013 to March 2014. The experiment was carried out as factorial experiment in a randomized block design with three replications. The first factor was organic fertilizer consisted of 0, 15, and 30 kg per palm. The second factor was NPK compound fertilizers 15:15:15 consisted of 0, 1.3 and 2.6 kg per palm. The results showed that no interaction effect between organic and NPK compound fertilizers on all of variables observed. Marginal soils in Jonggol required high rate of fertilizers to produce good performance of one-year-old oil palm. Application of 30 kg organic fertilizer per palm or 2.6 kg NPK compound fertilizers 15:15:15 per palm resulted in the highest vegetative growth of one-year-old oil palm on marginal land in Jonggol.Keywords: cow dung, critical nutrient level, slow release fertilizer, Ultisols, vegetative growth

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

Karakter Morfologi dan Potensi Produksi Beberapa Aksesi Sagu (Metroxylon spp.) di Kabupaten Sorong Selatan, Papua Barat Ratih Kemala Dewi; Muhammad Hasyim Bintoro; dan Sudradjat
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

ABSTRACTSago palm is a carbohydrate source which has the highest carbohydrate content compared to the other crops. It can produce about 200-400 kg per trunk of sago dry starch. More than 50% sago palm population in the world are grown in Indonesia and 90% sago palm in Indonesia is found in Papua. This research was aimed to characterize several sago palm accessions in South Sorong District, West Papua. There were 12 accessions observed, i.e. Fasai, Fasampe, Falia, Fanomik, Fasongka, Fafion, Fakattao, Fanke, Fablen, Failik, Fakreit and Fasinan. Among these accessions, there were many differences based on morphological characteristics such as shoots color, crown shape, trunk height, number of leaf, existence of spine, starch content, also pith and starch color. Fablen was the only non-spiny type. Most of sago accessions were high yielding accessions with the potential yield more than 200 kg per trunk of sago dry starch. Fanomik had the highest potential yield. Sago palm productivity in the natural forest of Saifi Subdistrict, South Sorong District, West Papua was estimated to reach approximately 34.59 ton ha-1 per year of sago dry starch. Keywords: accessions, starch, yield, food

The Effects of Cutting Heights and Intervals of Defoliation on Productivity and Nutrient Content of Brachiaria humidicola(Rendle) Schweick Selvie Diana Anis; Muhamad Ahmad Chozin; Soedarmadi Hardjosoewignyo; Munif Ghulamahdi; , Sudradjat
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 3 (2011): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The productivity of forage is strongly influenced by cutting height and interval of defoliation. Experiment was conducted at the Research Institute for Industrial Plants and Other Palm (BALITKA) Manado since June 2008 until April 2009. The objective of the experiment was to find out the effects of intensity and intervals of defoliation on dry weight production and the quality of nutrients. The experiment was arranged in factorial RCBD. The intensity of defoliation was based on cutting height, i.e. 5, 10, 15 cm, whereas the intervals of defoliation were 30, 45, 60 day and 456.54 Degree Days (DD). The data of dry weight production, leaf stem ratio, nutrient quality were collected. The results showed that there were significant effects of treatments on all parameters. Productivity of B. humidicolai terms of high dry weight yield, high leaf stem ratio and crude protein, low crude fiber and acid detergent fiber (ADF) content were found in the interaction of intensity 10 cm with the interval of defoliation among the vegetative development stage of 30 and 45 days, as well as the interval of defoliation based on heat unit accumulation of 456.54 DD. The research implies that a cutting height at 10 cm and interval of defoliation as mentioned above is ideal for B. humidicola. Utilization of growing degree days (GDD) to determine the appropriate time for defoliation is considerable under this experiment.Keywords: B. humidicola, defoliation, forage, nutrient, productivity

Effects of Dry Spirulina platensis and Antitranspirant on Growth and Yield of Chili Pepper (Capsicum annuum L.) Afifah Farida Jufri; Sudradjat ,; and Eko Sulistyono
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 44 No. 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTChili pepper (Capsicum annuum L.) plant is very sensitive to nutrient deficiences. The alternative effective approach is trough application of bio stimulator. The objective of this research was to study the effect of Spirulina platensis dry biomass and antiranspirant on chili pepper growth and yield. This research was conducted at Dramaga District, Bogor Regency, West Java Indonesia from February to July 2014. The experiment was arranged in a factorial split plot design with three replications. The main plot was S. platensis application which consisted of two levels, i.e., without S. platensis (control) and with S. platensis application (S1). The subplot was antitranspirant which consisted of three levels of interval application, there were without antitranspirant (A0), weekly (A1) and fortnightly (A2). The results showed that application of S. platensis and antitranspirant had no significant effect on physiological responses, vegetative growth and yield components. Application of S. platensis and antitranspirant weekly on chili pepper increased marketable product by 2.1%..Keywords: S. platensis, bio stimulator, nutrient

Penghambatan Pertumbuhan Gulma Commelina diffusa oleh Pemberian Ekstrak Segar Daun Mikania micrantha Natalia Puteri Widiastuti; Sofyan Zaman; Sudradjat
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

Commelina diffusa Burm. F. diketahui telah resisten terhadap beberapa jenis herbisida sehingga alternatif pengendalian gulma tersebut perlu diketahui. Mikania micrantha merupakan salah satu jenis gulma yang mengandung senyawa alelopati yang dapat menekan pertumbuhan tanaman di sekitarnya sehingga berpotensi digunakan sebagai bioherbisida. Penelitian ini bertujuan mengetahui potensi ekstrak daun M. micrantha sebagai bioherbisida untuk menghambat pertumbuhan gulma C. diffusa. Penelitian dilaksanakan di Kebun Percobaan Cikabayan dan Laboratorium Pascapanen, Institut Pertanian Bogor pada bulan April-Juni 2019. Rancangan percobaan yang digunakan adalah rancangan kelompok lengkap teracak (RKLT) faktor tunggal yaitu konsentrasi ekstrak daun M. micrantha sebesar 0.00, 0.33, 0.67, 1.00, 1.33, 1.67, dan 2.00 g bobot basah mL-1, dengan 4 ulangan. Aplikasi ekstrak daun M. micrantha mengurangi jumlah daun, meningkatkan skor toksisitas, dan meningkatkan persentase kematian gulma C. diffusa. Hasil penelitian menunjukkan bahwa aplikasi ekstrak daun M. micrantha menekan pertumbuhan daun C. diffusa sampai 2 minggu setelah aplikasi (MSA). Ekstrak daun M. micrantha bersifat toksik bagi pertumbuhan C. diffusa pada 1 MSA dan menyebabkan kematian C. diffusa mulai 10-15 hari setelah aplikasi. Konsentrasi ekstrak daun M. micrantha yang menyebabkan toksisitas pada C. diffusa adalah 1.15 g mL-1. Kata kunci: bioherbisida, gulma, konsentrasi ekstrak, resisten, senyawa alelopati

Adaptasi Tanaman Indigofera zollingeriana (Miquel 1855) (Leguminosae : Indigofereae) pada Berbagai Tingkat Naungan Saijo Saijo; . Sudradjat; Sudirman Yahya; Yayat Hidayat
Jurnal Ilmu Pertanian Indonesia Vol. 23 No. 3 (2018): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Indigofera zollingeriana is a bush type legume plant that grows well in full light but tolerant to shade conditions. Modification efforts of the environment with paranet shade treatment are the accurate approach. The objective of this research was to study the tolerance limit of I. zollingeriana plant at various shade levels. The study was conducted in October 2016-April 2017 at the Leuwikopo-IPB Bogor and used randomized block design with one shade factor (0, 40, 65, and 80%). The results of the measurement of microclimate with various shading levels showed that in the shade treatment 40%, the intensity of light decreased by 40% the temperature decreased by 6%, while the humidity increased by 10%. In the 65% shade, the light intensity decreased by 62%, the temperature decreased by 10%, while the humidity increased by 24%. In the 80% shade, the light intensity decreases 95%, the temperature decreases 13%, while the humidity increases 34%. The shade intensity has a real significant on decreasing stem diameter, number of branches, canopy dry weight, and roots. I. zollingeriana is rather tolerant of shade and it is able to adapt to shade up to 40%.

KERAGAAN PASTURA Brachiaria humidicola (Rendle) Schweick PADA SISTEM PENGGEMBALAAN DAN STOCKING RATE BERBEDA DI LAHAN PERKEBUNAN KELAPA Selvie D. Anis; M.A. Chozin; M. Ghulamahdi; Sudradjat Sudradjat; H. Soedarmadi
Pastura : Jurnal Ilmu Tumbuhan Pakan Ternak Vol 3 No 2
Publisher : Udayana University

Integrasi pastura dan ternak sapi ke dalam sistem pertanian berbasis kelapa diharapkan dapat meningkatkan efisiensi penggunaan lahan secara berkelanjutan. Percobaan ini bertujuan mempelajari pengaruh stocking ratedan sistem penggembalaan terhadap keragaan pastura. Penelitian ini telah dilakukan di Kebun Percobaan Balai Penelitian Kelapa dan Palma Lain (BALITKA) Manado sejak Juli 2009 sampai Juni 2010. Perlakuan terdiridari dua sistem penggembalaan dan tiga stocking rate diatur dalam pola petak terpisah yang didasarkan pada rancangan acak kelompok (RAK). Variabel yang diukur adalah jumlah tanaman induk, jumlah ground tiller,jumlah aerial tiller, bobot akar dan bobot crown. Hasil percobaan menunjukkan bahwa semua parameter keragaan pastura yang terbaik diperoleh pada interaksi antara sistem penggembalaan rotasi (SP2) dan stockingrate 2,31 UT (SR3).

Review Of The Collateral Valuation Procedures By The Internal Appraisal In Loan Disbursement At PT. Pasar Dana Pinjaman (Danamas) Larasati, Dinda; Sudradjat, Sudradjat
Jurnal Aplikasi Bisnis Kesatuan Vol. 3 No. 2 (2023): JABKES Edisi Agustus 2023
Publisher : Program Vokasi dan LPPM IBI Kesatuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37641/jabkes.v3i2.2054

Collateral is an asset or property provided by the borrower to the lender in order to obtain the loan facility. Collateral is one of the most important things in lending because of its role as the second way out when the default of event occurs in a loan. Therefore, a division and special work procedures are needed to asses the feasibility of an object to be used as collateral. This review was conducted to find out the characteristics of assessable assets that can be financed and used as a collateral by PT. Pasar Dana Pinjaman, as well as to identify the collateral appraisal procedures by internal appraisal, and obstacles faced during the collateral appraisal process. The result of this review show that assets that can be used as collateral are non-movable tangible assets with marketable value, no over-financing, and free from disputes (can be legally bound). Considering the capacity of internal appraisal, collateral that can be appraised by the internal appraisal are those that meets the following criteria, which is total exposure below IDR 10 billion, located within a maximum radius of 30 km from the operational office, classified as a simple property, and there are no negative lists around them. Based on the results of the review of the collateral appraisal procedure by internal appraisal at PT. Pasar Dana Pinjaman, it can be conclude that the internal appraisal division has a systematic procedure in place which is include in the internal appraisal SOP and is in compliance with the standards set by MAPPI, from order acceptance to assessment report. Obstacles faced by the internal appraisal division during the appraisal process are the difficulties of finding comparable data, hard-to-reach Person In Charge, and indications of fraud during appraisal process.

Co-Authors Ade Wachjar Afifah Farida Jufri Agung Marsubowo, Agung Agus Ismangil AI DARIAH Amanda, Dina Aminuyati Anita Darwis Arief, Khozin Ariz, Nail Fadhillah Arvin, Amanda Thalia Arwan Gunawan Asep Saepulrohman Asyifa, Siti Aziz, Sepul Budi Kartiwa Callista, Christine Dahtiah, Neneng Dewi Riniarti Dewi, Ratih Kemala Dhika Prita Hapsari Dwi Putri Wulandari Eko Sulistyono Eltis Panca Ningsih, Eltis Panca Ervizal AMZU Fatimah Abdillah Febriyan, Febriyan Feni Shintarika Firdaus Amyar Furqoni, Hafith H. Soedarmadi Hafith Furqoni, SP., M.Si. Ph.D. Haris Syahbuddin Hariyadi , Hariyadi, Hariyadi Herdhata Agusta Heri Sastra Hidayat Saputra Irwan Siallagan Ishak, Jouzar Farouq Jan Horas Veryady Purba Jasmadeti, Jasmadeti Karnita Yuniarti, Karnita Kukuh Murtilaksono Larasati, Dinda Lawrence, Sabrina Luh Putu Ratna Sundari M A Chozin M. Ghulamahdi Maju Lumban Tobing Mochamad Umar Mai Moermahadi Soerja Djanegara Muhammad Hasjim Bintoro Djoefrie Muhammad Hasyim Bintoro Mulia, Isnan Munif Ghulamahdi Musa Hubeis Natalia Puteri Widiastuti Pienyani Rosawanti Prabowo, Aji Patra Aria Prasetia, Ega Nur Purnamayani, Rima Putra, Aprilian Putra, Yoga Adi Putri, Wulan Wahyuni Rossa Rizki Fauziah Ramadhaini Rosita Dewi Rovishany, Nabila Daffa Ruhadi Ruhadi Saijo Selvie D. Anis Setia, Budi Soedarmadi Hardjosoewignyo Sofyan Zaman sudirman Yahya Sudirman Yahya Sudirman Yahya Sugiyanta Supijatno Suryanti, Cecilia valentina Sri Hadi Sutarta, Edy Sigit Sutarta Sigit Syahrbanu Aqilah Nainawa Tarigan , Suria Darma Tullah, Dewi Sarifah Vira Irma Sari Wahyu Gendam Prakoso, Wahyu Gendam Yan Sukmawan Yan Sukmawan, Yan Yanti Rufaedah, Yanti Yayat Hidayat Yayuk Nurjanah Yenni Asbur

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