Stability of performance of a pigeonpea/sorghum intercrop system

Results of 89 experiments available on sorghum (Sorghum bicolor)/pigeon pea (Cajanus cajan) intercrops have been pooled, and some basis for understanding the stability of performance is presented. On the average, the intercrop system provides the equivalent of 90% of the sole sorghum yield and about 52% of the sole pigeon pea yield. The relative advantage of intercropping remained more or less similar at different levels of fertility. There was no relationship between relative advantage and the amount of water used. Regression analysis showed that the intercrop system is superior to sole crops at all levels of yields and is more widely adaptable