Agronomic Performances of Rice and Potato in Different Cropping Patterns

Cropping sequence affects grain crop yields. Nine different cropping patterns (CPs) were analyzed to know the effect of cropping sequences on rice grain and potato tuber yields, to study the role of legumes as green manure crop and to relate the biomass incorporated in soil with rice and tuber yields. Four cropping patterns such as vetch-fallow-rice, rice-bean-fallow-rice, berseem-fallow-rice and dhaincha-rice-potato gave higher rice yields than the CPs with chemical fertilizers. In tuber yield, dhaincha-rice-potato sequence gave the highest response among the CPs with no fertilizers. There were increment in both rice grain and potato tuber yields as biomass incorporated in soil was increased. Rotation on crops with legumes at least once in a year can be considered as important factor in sustaining production system