I Wayan Rusastra
Pusat Penelitian Sosial Ekonomi Pertanian, Bogor Jl. Jend Ahmad Yani No.70 Bogor

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Biophysical and Economic Evaluation of Hedgerow Intercropping Using SCUAF in Lampung, Indonesia I Wayan Rusastra; Sri Hery Susilowati; Gelar Satya Budhi; Peter Grist
Jurnal Agro Ekonomi Vol 17, No 1 (1998): Jurnal Agro Ekonomi
Publisher : Pusat Sosial Ekonomi dan Kebijakan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jae.v17n1.1998.22-32

Abstract

IndonesianStudi ini mengungkap dampak jangka panjang (20 tahun) tiga sistem usaha tani dengan menggunakan pendekatan model bioekonomik, yang disebut Model Soil Change Under Agro Forestry (SCUAF). Teknik konservasi introduksi usaha tani tanaman lorong Flemingia dibandingkan dengan dua jenis sistem usaha tani tradisional yaitu perladangan berpindah dengan masa bera tiga tahun dan sistem usaha tani tanaman pangan sepanjang tahun. Tingkat erosi dan kesuburan lahan menurun secara drastis pada sistem usaha tani tradisional, khususnya pada sistem usaha tani tanaman pangan sepanjang tahun. Dalam 20 tahun, sistem usaha tani tradisional ini kehilangan volume lahan hampir 20 kali, dan unsur hara (soil nutrient) mendekati tiga kali lebih besar dibandingkan dengan teknologi konservasi tanaman lorong. Produktivitas tanaman menurun pada ketiga sistem usaha tani, tetapi penurunan cukup tajam (81%) terdapat pada sistem usaha tani tanaman pangan sepanjang tahun dan hanya 30 persen pada sistem usaha tani tanaman lorong. Sistem perladangan berpindah memiliki Net Precent Value (NPV) paling rendah. Dalam jangka panjang, teknologi konservasi tanaman lorong mampu memberikan keuntungan finansial yang tertinggi dan dapat menjamin keberlanjutan usaha tani. Namun demikian, teknologi introduksi ini membutuhkan dukungan modal yang relatif besar pada tahap awal, sehingga dalam implementasinya perlu didukung dengan kebijaksanaan perkreditan di samping kepastian status penguasaan lahan.EnglishThis study reveals long term (20 years) impact of three farming systems using an approach of bio-economic model called Soil Change Under Agro Forestry (SCUAF). An introduced conservation technique of Flemingia inter-cropping system was compared to two traditional farming systems i.e. shifting cultivation with three years fallow and a long year food crop farming system. Soil erosion rate and land fertility decreased drastically on land used for traditional farming system especially for that of the long year food crop farming system. In 20 years, the traditional farming system lost soil volume almost 20 times and soil nutrient for almost three times compared to that of hedgerow inter-cropping farming system technique. Plant productivity for all techniques decreased, however, the long year food crop farming system experienced the most (81 %) compared to hedgerow inter-cropping using SCUAF (30% ). Net Present Value (NPV) for shifting cultivation was the lowest. In a long term, the hedgerow inter-cropping using SCUAF gives the highest financial profit and assures farming sustainability. However, this introduced technology requires relatively high capital support at the initiation phase so that it needs PRIVATE credit policy support besides land holding status certainty.
Analisis Keunggulan Komparatif Industri Pakan Ternak di Jawa Barat dan Lampung nFN Sumaryanto; I Wayan Rusastra
Jurnal Agro Ekonomi Vol 10, No 1-2 (1991): Jurnal Agro Ekonomi
Publisher : Pusat Sosial Ekonomi dan Kebijakan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1746.795 KB) | DOI: 10.21082/jae.v10n1-2.1991.56-72

Abstract

The role of feedmill industry in the livestock production system is very essential. Therefore the efficient feed production is required to support the poultry industry development. This study is intended to evaluate the economic feasibility of the feed industries in Lampung and West Java. The finding of this study indicated that poultry feed production is economically efficient under import substitution scenario, but on the border line under interregional trade regime, and is not feasible for export promotion. Although feedmill industries did not receive any input subsidies, they persistently enjoyed financial profit due to highly output price protection. The implication of the study is that the poultry feed production have to be vertically integrated with feedstuff supply and poultry production. Operationally the feedmills have to use local raw materials and the output (feed) should be directed to support livestock development in the respective region.
Dampak Penghapusan Subsidi Pupuk terhadap Permintaan Pupuk dan Produksi Padi Nasional I Wayan Rusastra; Reni Kustiari; Effendi Pasandaran
Jurnal Agro Ekonomi Vol 16, No 1-2 (1997): Jurnal Agro Ekonomi
Publisher : Pusat Sosial Ekonomi dan Kebijakan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.943 KB) | DOI: 10.21082/jae.v16n1-2.1997.31-41

Abstract

Maintaining rice selfsufficiency in the condition of fiscal austerity can be conducted through technological generation, efficiency improvement, or input subsidy reduction. The objectives of this study is to asses the impact of price liberalization of Urea, TSP, and other chemical fertilizer (KCI and ZA) to the application of those fertilizer and national rice production. The study used the combination of cross-section (five regions) and time series data of 15 years (1979-1993). There are four empirical models under considerations in this study, i.e: rice production function, and demand function of Urea, TSP, and other chemical fertilizers. The system equations of rice production and fertilizer demand functions are estimated simultaneously in order to have an efficient parameter estimates. The research findings indicated that fertilizer price liberalization had positive impact on the structural application of those fertilizers, in which the use of Urea and TSP decline and the use of other chemical fertilizer increases. The structural change of those fertilizer application have positive impact on yield and national rice production, at the magnitude of 5,1 percent. In order to maintain rice productivity (selfsufficiency) and efficient use of national resources, the reduction of Urea and TSP subsidy can be conducted in a faster rate than those ZA's and KCI's For larger rice production improvement, technological breakthrough is really needed in conjunction with managerial skill improvement of the farmers.