Problems associated with the possible use of systemic insecticides in cocoa production
A two year study of the translocation and persistence properties of five systemic insecticides injected into cacao trees under tropical conditions has disclosed the following information. 1. Anticholinesterase agents of both Thimet and Chipman R6199 will persist in the foliage of cacao trees for as long as 20 months. 2. Radioactive studies of P32 labeled R6200 show a slow rate of hydrolysis of the toxicant in the leaves and a concentration of the active insecticide over a 2 month period, these same studies show a very rapid rate of hydrolisis of the toxicant in the cacao beans, in other words, the toxicant persists in the leaves but not in the beans. 3. Residue analyses of the cacao beans by anticholinesterase technique show, in most cases, non-toxic residues persisting in processed cacao beans. However, high concentrations of non-toxic hydrolysis products do persist and may contribute to off-flavors. This point is being investigated by a taste panel conducted through the cooperation of the American Cocoa Research Institute.
| Main Authors: | , |
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| Format: | biblioteca |
| Published: |
1958
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| Subjects: | THEOBROMA CACAO, INSECTICIDAS, ACCION SISTEMICA, PERSISTENCIA DE LOS PLAGUICIDAS, RESIDUOS, |
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