Land Suitability Evaluation For Paddy, Corn and Soybean in Binangalom Watershed Toba Samosir District North Sumatera
Harahap, Erwin Masrul
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Food production Increase continues to be encouraged in order to achieve food sovereignty. Various Programs are taken place to support food production. In the scope of the Ministry of Agriculture special efforts activities for paddy, corn, soybean and Agricultural Technology Park are currently being promoted to improve the welfare of farmers. Production increase can be done in two ways; agricultural extension and intensification. Land suitability to improve productivity is needed to achieve that goal. This study aims to: (1) map regional agro-ecological zones of Binangalom watershed. (2) identify potential land resources for the extension of paddy, corn and soybean; (3) map the land suitability to expand the land for paddy, corn and soybean. This research used methods of desk study, observation and survey. To obtain a land units (LU) map is done with overlay topographic maps, soil type maps and elevation maps. The results showed that from the overlay map in Binangalom watershed 16 LU are obtained. Administratively Binangalom watershed is in TOBA SAMOSIR district North Sumatera Province, with an area of 3717.53 ha. Binangalom watershed consists of 3 Agro ecology zone. In Zone I the slope is > 40%. In zone III the slope is 8 -15%. In Zone IV the slope is 0-8%. The land suitability for paddy, corn and soybean is dominated by S2 conformity class.