A field experiment was conducted during 2006-08 in Alfisols under rainfed conditions to investigate the productivity potential, biological efficiency and economics of sweet potato ( Ipomoea batatas L.)-based strip intercropping systems. Among the crops tested, sweet potato as a sole crop recorded higher yield (13 367 kg/ha) than other crops. Among strip intercropping, sweet potato tuber yield was higher (8 538 kg/ha) in sweet potato+pigeonpea. In sweet potato+pigeonpea intercropping increase in number of tubers/plant (3.1), tuber length (12.6 cm), mean tuber diameter (8.9 cm) and tuber yield/plant (213 g) were noticed than sole sweet potato. All the strip intercropping systems showed superiority over sole crops in terms of sweet potato tuber equivalent yield. However, sweet potato+pigeonpea intercropping system recorded significantly higher tuber equivalent yield (13 534 kg/ha) than other intercropping systems. Strip intercropping system of sweet potato+pigeonpea resulted in higher LER (1.31), the product of relative crowding co-efficient (K=3.52) and benefit:cost ratio (3.24).
