Abstract

Summary The effects of plant canopy and legume intercropping on the yield, runoff and soil loss from maize and cassava were studied using runoff plots on an oxic Aridisol on Molokai, Hawaii. The use of legumes as ground covers reduced runoff and soil loss from maize. Similar beneficial effects were also gained from legume intercropping of cassava. Besides providing protection against runoff and erosion, legume intercrops also induced yield gains in succeeding crops due to nutritional contributions from their residues and added income in the case of groundnut. The observed short-term and longterm benefits indicate that legume intercropping should be favored as a strategy for sustaining the productivity and stability of cropping systems.

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