New application method for cocoa disease control
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CTA. 1991. New application method for cocoa disease control . Spore 32. CTA, Wageningen, The Netherlands.
Permanent link to cite or share this item: https://hdl.handle.net/10568/45491
External link to download this item: http://collections.infocollections.org/ukedu/en/d/Jcta32e/
A new method for fungicide application has been developed at the Cocoa Research Unit in Trinidad and Tobago for reducing losses from black pod and other fungus diseases in cocoa. Copper fungicide is incorporated in a collar made from water permeable...
A new method for fungicide application has been developed at the Cocoa Research Unit in Trinidad and Tobago for reducing losses from black pod and other fungus diseases in cocoa. Copper fungicide is incorporated in a collar made from water permeable material (CRU Collar) and this collar is attached to the top of the podbearing trunk. Water from rainfall redistributes copper to all parts of the tree below the collar and the soil around the tree base. In a smallscale field trial, rates of 10g of active ingredient (Cu) per tree resulted in 100% control of black pod infection while untreated control trees showed 60% incidence of disease. This method has the advantage over conventional spray application of releasing and redistributing fungicide to susceptible parts during rain, the time when maximum protection is needed. Trees raised from seedlings or with 'seedling' habit are ideal for successful disease control by this method. Adaptation of the technique to suit application to the clonally propagated trees is currently m progress at the Cocoa Research Unit. Professor John Spence Cocoa Research Unit University of the West Indies St Augustine Trinidad and Tobago, Wl
SubjectsCROP PRODUCTION AND PROTECTION;
- CTA Spore (English)