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The cacao of SouthWestern Nigeria
The cacaobelt of SouthWestern Nigeria
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acre Akinyele Al-P alii Amelonado Aponmu application available water Balogun Bray and Kurtz cacao belt cacao leaves cacao soils cacao trees cation exchange capacity cent clay content clayey soils Cocoa correlation crop decrease deficient depth determined differences dry season dry-matter content evapo-transpiration extractable fertilizer experiment fertilizer trials field capacity flush forest fraction Ghana gneiss gravel Ibadan Iddo Ikole Ilesha increased inorganic Iroko kaolinitic lb dry beans lb P2O5 leaf age leaf analysis light intensity linear mainly metamorphic rock mulch Nigeria nitrogen non-occluded nutrient nutrient concentrations Oke-Irun older leaves organic matter ose half parent rock period petiole phosphate planted plots pods potassium pre-treatment rainfall regression relationship requirements of cacao responses samples sandy soils sedimentary soils shade slope soil moisture soil profiles sorbed sorption capacity South-Western Nigeria status texture top soil triple superphosphate Wessel yield young cacao young leaves