This study was carried out in one of the plots at the Gambari Experimental Station (GES) jointly initiated by the Cocoa Research Institute of Nigeria (CRIN) and the Nigerian Institute of Oil Palm Research (NIFOR) in 1965. The experimental design, mainly agronomic, was randomized blocks consisting of three spacing arrangements: pure stands of cocoa and oil palm; avenue planting of cocoa and oil palm and hollow square planting of cocoa and oil palm.