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All Journal Jurnal Ilmu Pertanian Indonesia Forum Pasca Sarjana Jurnal PIKOM (Penelitian Komunikasi dan Pembangunan) Jurnal Ecolab Jurnal Penelitian dan Pengembangan Pertanian Jurnal Tanah dan Iklim
Irsal Las
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Agriculture, Biological Sciences & Forestry Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences

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Journal : Jurnal Ilmu Pertanian Indonesia

 1 
Teknik Penggerombolan Fuzi untuk Pewilayahan Curah Hujan di Sentra Produksi Padi Aris Pramudia; Vonny Koesmaryono; Irsal Las; Tania June; I Wayan Astika
Jurnal Ilmu Pertanian Indonesia Vol. 12 No. 3 (2007): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Rainfall zoning analysis with fuzzy clustering method has been performed at the centre of paddy area in the northern coast of Banten Province and West Java Province. Rainfall data recorded in the 1980-2006 period from 62 rainfall stations in the northern coast of Banten Province and from 75 rainfall stations at Karawang and Subang in the northern coast of West Java Province have been used in this analysis. For the first analysis a calculation of arithmetic mean values representing EI-Nino, La-Nina and Normal condition has been performed. Next, a fuzzy clustering analysis is applied to these mean values. The clustering analysis consists of two steps. First, a symmetric and reflective compatibility relation matrix describing a distance function between rainfall stations is calculated. Second, a fuzzy equivalency relationship i.e. a transitive approach of fuzzy compatibility matrices is determined. The results of analysis indicate a difference in the equivalency level among the stations under the EI-Nino, La-Nina and Normal conditions in the northern coast of Banten Province and West Java Province. Based on the 75°/o equivalency level, in the northern coast of Banten area can be grouped into four rainfall zones under EI-Nino condition, two zones under La-Nina condition and three zones under Normal condition. On the other hand, in the northern coast of West Java area can be grouped into three zones under EINino condition, two zones under La-Nina condition, and four zones under Normal condition.Keywords: Arithmetic means values, EI-Nino, La-Nina, Fuzzy clustering, Rainfall zoning
Deliniasi risiko iklim dan evaluasi model hubungan curah hujan dan produksi padi dalam mendukung pengembangan asuransi indeks iklim (climate index insurance) pada sistem usahatani berbasis padi Woro Estiningtyas; Rizaldi Boer; Irsal Las; Agus Buono; Adi Rakhman
Jurnal Ilmu Pertanian Indonesia Vol. 16 No. 3 (2011): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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The agricultural sector, particularly the rice farming system (SUT) is very vulnerable to climate variability and change. SUT that rely heavily on water will be easily affected by climate variability and change when the water supply deficit of needs that should be. SUT is still dominant in the food supply in Indonesia, so the shock of farming due to extreme climate events will have a major impact on food security. Many findings indicate that the frequency and intensity of extreme climate events will increase as a result of global warming. Extreme climate events dominant occur in center of rice production in West Java like Indramayu is drought. Approximately 80°/o of the causes of the rice harvest failed in the district of Indramayu is the incidence of droughts. Farmers as the main actors receive large impacts due to drought is expected to be increasingly difficult to develop the farm. It is therefore necessary to have protection program for farmers from the impact of climate events such climate extrim. One option is starting a lot of feasibility is Climate Index Insurance. This study aimed to assess the feasibility of the implementation of the climate index insurance system in Indramayu. Analysis step is performed include (i) preparation of endemic drought maps are required as the basis in determining the priority areas of climate risk management and (ii) the determination of climate index value (threshold value) to be used as an index into the determination of the value of insurance claims. This study found that climate indices that can be used for the three villages at high risk of drought is high rainfall during the dry season. Index value for the three villages is 168 mm, 248 mm and 472 mm for Cikedung, lelea and Terisi. Potential applications of Climate Index Insurance for rice SUT in Indramayu is high because about 90°/o of the people are rice farmers. Besides benefit of rice farming is also quite large with B/C from 1.4 to 1.8 during the wet season and 1.2 to 1.7 on the dry season, so the expected ability to pay insurance premiums high enough.
Penentuan Musim Tanam Tanaman Pangan Berdasarkan Pola Curah Hujan di Lima Tapak Utama Proyek Pembangunan Penelitian Pertanian Nusa Tenggara Sub-Basis Maumere, Kabupaten Sikka Ahmad Bey; Irsal Las; M HG Yasin
Jurnal Ilmu Pertanian Indonesia Vol. 1 No. 2 (1991): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

This study was conducted...
Co-Authors Abdul Aziz Adi Rakhman Agus Buono AHMAD BEY Aris Pramudia Atang Sutandi Eleonora Runtunuwu Eleonora Runtunuwu Eleonora Runtunuwu Elsa Surmaini Haris Syahbuddin I Wayan Astika Istiqlal Amien M HG Yasin Pudji Muljono RACHMI WIDIRIANI Retno Sri Hartati Mulyandari Rizaldi Boer S. HADI SUTJAHJO Tania June Vonny Koesmaryono Woro Estiningtyas Yonny Koesmaryono