PenilaianTeknologi Budidaya Padi Sawah Irigasi Adaptif Terhadap Keragaman Iklim (Studi Kasus: Subang, Jawa Barat)

Abstract

In recent yearsm riceproductivitytended to decrease. Thisconditionis not only due to limited adoption of new technologies by farmers but also due to the increased in crop failure caused by extreme climate events. This study aimsto identify and assess crop management technologiesofirrigatedrice inSubang and to develop crop management strategies more adaptive to climate variability. Assessment of crop management technologies was done using crop simulation (DSSAT) and cost-benefitanalysis, and adaptivefarmingstrategies was developed based on interviews with farmers taking into consideration the results ofthe crop simulation. Crop management technologies being assessed were 18technologies consists of water management,fertilizer application, and crop spacing. The results showedthat theoptimumtechnology at Subang for the irrigated rice is puddlingwithnitrogen application of 150 kg Urea/ha and plant spacing of 40x40cm. The optimumplantingtime is betweenmid-Octoberand mid-January. The B/C ratio for this technology is the highest. Strategy to manage climate risk include not only with structural intervention such as development of community-based water reservoir, wells pump etc, but also with non-structural intervention such as enhancement of farmers capacity in using climate forecast information application for tailoring crop management and cropping pattern to the forecast information.