참깨의 연작장해 경감 녹비작물 선발 및 윤작효과

Abstract

- The green manure crops such as rye, hairy vetch and scotch oat were applied to reduce the injury bycontinuous cropping system (CCS) of sesame (Sesamum indicumL.) cultivation, which manure crops was sowed inlatter-September or mid-October and returned to soil in the next year of May. The growth and yields were increased as33% (65.0 kg/10a) in the rotational cropping system (RCS) compared to continuous cropping system of 48.9 kg/10a. Inthe CCS of sesame, it was increased as 10∼15% in the green manure crop cultivation, and rye cultivation was the mosteffective crop to reduce the injury of continuous cropping in the green manure crops. The RCS displayed lower diseaseoutbreak and Fussarium oxysporumdensity in the soil compared with the CCS, and the green manure crop showed goodeffect in the CCS of sesame. In the RCS, the porosity was most high in the RCS and CCS of rye cultivation, while ryeand hairy vetch was effective way to reduce the injury of continuous cropping. The outbreaks of wilt disease andphytophthora blight were increased as the CCS years, however displayed lowest outbreaks of disease and the yieldsshowed highest in the rye cultivation.Key words - Sesame, Green manure, Rye, Hairy vetch, Scotch oat