Abstract

Sudaryono Balitkabi and Andy Wijanarko

Seputih Surabaya district covers 13 villages having 8,566 ha agricultural land consisted of 928 ha rainfed lowland and 7,638 ha dry land. Bandar Surabaya district covers 9 villages having 6,727 ha agricultural land consisted of 1,363 ha rainfed lowland and 5,364 ha dry land. The objective of this research is to identify potential of land suitability for soy bean. The research was done in May – September 2006, using purposive soil sampling. There were five point of boring site in every village and to be composed. Soil chemical analysis was done in laboratory. Soil fertility was vary between village. This area can be classified into two groups, these are suitable (S-2) and moderate suitable for soy bean (S-3). The level of land suitability for soy bean can be upgraded by : deeping soil tillage, apply soil ameliorant (dolomite, zeolite), applying organic and inorganic fertilizers. Seputih Surabaya and Bandar Surabaya have suitable agricultural land to develope soy bean. Developing soy bean in rainfed lowland with cropping pattern rice – soybean – other secondary crops or rainfed upland with cropping pattern Maize – Soybean + others, or multiple cropping system between Cassava + Maize and Soybean with planting cassava arranged into double rows.