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acidic acre alluvial Analysis of Variance appears application Atmometer available phosphate average axil spot bad plot bean number Brasso buds cacao beans Cacao Research cacao soils cacao tree catechin cent chemical cherelles chupon clay soils clones colour compared correlation cotyledons Criollo crop cuttings deficiency dry cacao effect evaporation factors fermentation field flowers flush Forastero fruit genetic germination Grenada growth Hermanas inches increase in yield investigations Latin Square layer leaf leaf-scorch manure manurial experiments mean method Moruga mulch mycorrhiza nitrate nitrogen number of pods nutrient obtained occur organic matter ovules phosphate phosphatic manures pigment plants pollination potash potassium Pound produced progeny propagation purple beans ratio records relative humidity Report on Cacao Rio Claro River Estate roots samples sand season seedling selection self-incompatible trees setting shade significant soil-types sulphate superphosphate surface Table tannin temperature theobromine Thrips Total Trinidad warty wet cacao