Opoku IY, Akrofi AY, Appiah AA. Assessment of sanitation and fungicide application directed at cocoa tree trunks for the control of Phytophthora black pod infections in pods growing in the canopy. European Journal of Plant Pathology [Internet]. 2007  ;117(2):167 - 175. Available from: http://link.springer.com/article/10.1007%2Fs10658-006-9082-8