Potential of intercropping soybeans (Glycine max. (L.) merrill) and cowpea (vigna unguiculata L. walp) with sunflower (Helianthus annuus L.) in the transition zone of south west Nigeria
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Potential of intercropping soybeans (Glycine max. (L.) merrill) and cowpea (vigna unguiculata L. walp) with sunflower (Helianthus annuus L.) in the transition zone of south west Nigeria