Abstract
AbstractCassava, corn and drybeans were tested under sole cropping and under all possible intercropping combinations in Paraiba State, Northeast Brazil. The crops were planted with and without fertilizer (N, P, K), which generated fourteen cropping systems. Yields of beans were not affected by either intercropping systems or fertilization. Yields of corn and cassava were affected by intercropping systems, fertilizer, and cropping systems fertilizer interaction. LER values were significantly different among cropping systems but were not affected by fertilization. This indicates that the advantage of intercropping was not improved by the addition of nutrients.
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