Coffee board of Kenya monthly bulletins October 1973

Abstract
In this relatively new method of control, insecticide granules are sprinkled on the cleared soil within a circle 25-28 cm from the base of the tree.Disyston is released by the moisture and absorbed by the roots and bark and translocated to the leaves where it kills the mining caterpillars. Tests of this method were started by the Coffee Research Station early in 1972 and an account of the preliminary results was published m Kenya Coffee,December 1972 pp 364 and 368. These particular experiments have now finished and a full account will be published elsewhere, but in view of the current interest in Disyston treatments a summary of results and current recommendations seems appropriate.
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