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All Journal Sodality: Jurnal Sosiologi Pedesaan Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Seminar Nasional Lahan Suboptimal
Yudi Sastro
Assessment Institute for Agriculture Technology of Jakarta Jl. Raya Ragunan No. 30 Pasar Minggu Jakarta Selatan (12540)
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Environmental Science Social Sciences Other

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Peran Modal Sosial dalam Pengembangan Ternak Sapi Potong Rakyat di Bengkulu Andi Ishak; Erpan Ramon; Zul Efendi; Wahyuni Amelia Wulandari; Harwi Kusnadi; Emlan Fauzi; Yudi Sastro
Sodality: Jurnal Sosiologi Pedesaan Vol. 8 No. 3 (2020): Sodality
Publisher : Departement of Communication and Community Development Sciences, Faculty of Human Ecology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22500/8202034481

Abstract

Pengembangan peternakan sapi potong rakyat terus diupayakan pemerintah melalui berbagai program untuk mengurangi impor daging sapi dan meningkatkan pendapatan peternak. Penelitian ini bertujuan untuk menguraikan peran modal sosial pada tingkat kelompok tani dalam pengembangan populasi ternak sapi potong rakyat di Bengkulu. Penelitian dilakukan pada bulan Agustus sampai dengan Desember 2020 dengan metode wawancara mendalam pada 3 kelompok tani penerima bantuan ternak sapi potong dari Dinas Peternakan dan Kesehatan Hewan Provinsi Bengkulu. Identifikasi modal sosial (norma, kepercayaan, dan jaringan) yang mempengaruhi pengembangan populasi ternak dan peningkatan kapasitas kelompok tani dianalisis secara deskriptif menggunakan model interaktif. Hasil penelitian menunjukkan bahwa modal sosial memiliki peran penting dalam pengembangan kapasitas kelompok mengelola bantuan ternak dari pemerintah, yaitu: (1) norma penggaduhan ternak dengan sistem bagi hasil menyebabkan peningkatan populasi ternak milik kelompok, (2) kepercayaan anggota kelompok tani dipengaruhi ikatan-ikatan sosial dalam kelompok tani dan peran ketua kelompok, (3) jaringan kerjasama yang baik dalam kelompok tani meningkatkan modal sosial dan pengembangan populasi ternak.
The Effect of Rock Phosphate and Level of Inoculums on The Survivability of Aspergillus niger and Its Solubilization Ability When Pelleted With Rock Phosphate Yudi Sastro; Donny Widianto; Irfan D Prijambada
Jurnal Ilmu Tanah dan Lingkungan Vol 7 No 2 (2005): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.996 KB) | DOI: 10.29244/jitl.7.2.77-80

Abstract

The study is intended to examine the survival of Aspergillus niger and its phosphate solubilizing ability when pelletedwith rock phosphate. An A. niger YD 17 obtainedfrom the Laboratory of Microbiology. Faculty of Agriculture, Gadjah MadaUniversity was used. The pellet was made by mixing rock phosphate (80%) with organic matter (J 3. 9% waste of tapioca. 6% rice bran, and 1% starch) and spore of A. niger. The experimental design was the Complete Randomized Design 5x4 with 3 replicatiOns. The first factor was sources of rock phosphate (Christmas Island. Jordan, China, Ciamis, and Madura). The secondfactor was the number ofinoculums i.e. control without inoculums, 107 • J(t and J(t cfu.g·'. The colony of A. niger that formed at medium of potatoes dextrose agar (PDA) and the amount of soluble phosphorus in the Pikovskaya liquid medium were parameters. Experimental results indicated that sources of rock phosphate and the number of inoculums itif1uence the A. niger survivability and its phosphorus solubilizing ability. Rock phosphate from Ciamis gave the best support for fungus survival and rock phosphate from Christmas Island was the best substrate for phosphate solubilization. The highest soluble phosphate was achieved by ul inoculums.
Sekresi Asam-asam Organik oleh Aspergillus niger YD 17 yang Ditumbuhkan dengan Batuan Fosfat Yudi Sastro; Donny Widianto; Dja'far Shiddieq
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 11, No 3 (2006): October 2006
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v11i3.2544

Abstract

Information on ability of Aspergillus niger to secrete organic acid is important in using A. niger as phosphate rock-solubilizing microorganism. This research was aimed to examine the ability of A. niger YD 17 secreting organic acid when it was grown with phosphate rock. An A. niger YD 17 was obtained from Laboratory of Microbiology, Faculty of Agriculture, GMU. The phosphate rock used was Christmas Island phosphate rock. Organic materials consisted of tapioca waste industry, rice bran, and starch. The study was conducted in Pikovskaya liquid medium and soils that were taken from Jasinga, Banten, West Java (ultisol) and Karang Jati, Ungaran, Central Java (inceptisol). The type and level of organic acid production were determined using high performance liquid chromatography (HPLC). The results indicated that A. niger YD 17 was able to secrete organic acid when it was grown with phosphate rock. The level of organic acid in the Pikovskaya liquid medium reached 255.7 g.ml-1, whereas in the soil reached 2992.5 g.g-1. Malate dominated organic acid in the Pikovskaya liquid medium, while in the soils dominated by oxalate. The type and level of organic acid secreted by A. niger YD 17 were influenced by carbon and phosphorus sources, concentration of inoculums, and characteristic of the soils.
Pengaruh Bahan Organik dan Suhu Pengeringan terhadap Ketahanan Hidup Aspergillus niger dalam Pupuk Pelet Bio-fosfat Yudi Sastro; Donny Widianto; Irfan D. Prijambada
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 12, No 2 (2007): June 2007
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v12i2.2667

Abstract

This research was aimed to investigate the effect of organic matter and drying temperature on Aspergillus niger survivability in the rock phosphate pellet fertilizer namely bio-phosphate. The research was arranged by a completely randomized design 3x3x6. Addition of the mixing of tapioca waste, rice bran, and starch (BOC) and the humic substance (BH) in the bio-phosphate, and its drying temperature (SP) were the treatments. Aspergillus niger inoculums survivability in the bio-phosphate was determined using plating methods. The result showed that the addition of BOC decreased amount of A. niger in the bio-phosphate up to 28.0%, while the BH increased the amount of A. niger up to 24.4%. The ideal drying temperature of bio-phosphate pellet fertilizer was 600C.
Keragaan Serangan Hama dan Penyakit serta Hasil Tiga Varietas Unggul Baru Padi pada Display Teknologi Pengendalian Hayati Kusmea Dinata; Monita Puspitasari; Irma Calista; Yulie Oktavia; Siti Rosmanah; Yahumri Yahumri; Hendri Suyanto; Shannora Yuliasari; Yudi Sastro
Seminar Nasional Lahan Suboptimal 2021: Prosiding Seminar Nasional Lahan Suboptimal ke-9 “Sustainable Urban Farming Guna Meningkatkan
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Dinata K, Puspitasari M, Calista I, Oktavia Y, Rosmanah S, Yahumri Y, Suyanto H, Yuliasari S, Sastro Y. 2021. Performance of pests and diseases attack and yield of three new superior varieties of rice on biological control technology display. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-9 Tahun 2021, Palembang 20 Oktober 2021. pp. 555-562.  Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Rice is a strategic food commodity whose needs are always increasing. Currently, food security and food safety must be carried out in order to ensure the availability of healthy food for consumption. One of the input factors for pollution to health is the excessive use of synthetic chemical pesticides in the production process in the field. In an effort to control pests and plant diseases, the government has implemented an integrated pest control program (IPM), but this technology has not yet been developed. The purpose of this study was to determine the ability of several rice varieties and the use of biological agents in suppressing pest attacks on rice plants. The study was conducted in a randomized block design with two paired treatments, namely the use of biological agents and synthetic chemicals on three new high yielding varieties of lowland rice This research was carried out on the cooperator farmer's land area of 1 ha. The technological components applied are the use of three New Superior Varieties (Inpari Digdaya, Inpari IR Nutri Zinc and Inpari 46) and biological control. The results showed that the main pest and disease attacks on the treatment of biological agents and synthetic chemicals were not significantly different. However, in the treatment of using new superior varieties, there was a significant difference in the intensity of panicle neck blast disease from the three varieties. The Inpari 46 variety has the highest productivity compared to the other two varieties.
Pengaruh Campuran Onggok, Sekam, Pati dan Bahan Humat terhadap Pertumbuhan Aspergillus niger dan Kemampuannya dalam Melarutkan Fosfat Yudi Sastro; Donny Widianto; Irfan D. Prijambada
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 23, No 3 (2006)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2006.23.3.173

Abstract

The aims of this study were to investigate the effects of the mixture of tapioca waste, rice bran, starch (BOC), and humic substance (BH) on Aspergillus niger growth and its phosphate solubilizing capability. The experiment was conducted in Erlenmeyer flask containing 200 ml Pikovskaya liquid media and incubated on shaker with 100 rotaries per minute for nine days.  The Christmas Island phosphate rock was used as phosphate source.  Aspergillus niger YD 17 was taken from the Laboratory of Microbiology, Faculty of Agriculture, Gadjah Mada University. The experiment was arranged using factorial completely randomized design with three-replications (3x4x3). The level of BOC (i.e. 0, 2, and 4 g.l-1 media)   and BH   (i.e. 0, 1, 2, and 3 ml.l-1) were applied as experimental factors. Dry weight of mycelia and the soluble phosphate in media were parameters of Aspergillus niger growth. The results showed that BOC and BH increased the Aspergillus niger growth and its phosphate solubilizing capability (P£0.05). Four-gram of BOC and 3 ml of BH per litter of media were the best level for Aspergillus niger growth, while 4 g of BOC and 2 ml of BH was the best level for phosphorus solubilization capability.
Co-Authors Andi Ishak Dja'far Shiddieq Donny Widianto Emlan Fauzi Erpan Ramon Harwi Kusnadi Hendri Suyanto Irfan D. Prijambada Irfan Dwidya Prijambada Irma Calista Kusmea Dinata Monita Puspitasari Shannora Yuliasari Siti Rosmanah Wahyuni Amelia Wulandari Yahumri Yahumri Yulie Oktavia Zul Efendi