Physiological basis for yield advantage in a sorghum/ groundnut intercrop exposed to drought. 1. Dry-matter production, yield, and light interception

Abstract

An intercrop consisting of one row of sorghum between two rows of groundnut was grown, together with sole crops of the components at the same intra-row spacing as in the intercrop. Two irrigation treatments were applied: a ‘wet’ treatment in which water stress was kept to a minimum by frequent irrigation; and a ‘dry’ treatment which received less water