Coffee Board of Kenya Monthly Bulletins April 1942

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Date
1942
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There are some differences in the proportions of the various parasites produced during the year.These arose through the decision to increase the numbers of Anagyrus kivuensis produced,because it had been proved that this insect was the most effective.In order to do this it was necessary to place the other species on a maintenance basis" and this was done in April.This maintenance basis was a routine of breeding designed to maintain a stock of parasites without multiplying them for liberation.However, it was found that enough insects were produced on the breeding routine employed to make occasional liberations of all species.
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