Population of the LeafMiner Leucoptera Meyricki Ghesq and its parasites in sprayed and unsprayed coffe in Kenya

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Date
1963
Authors
Henry, A.B.
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Abstract
There have been many reports in recent years of minor insect pests becoming maior ones, as; well as of major ones becoming more difficult to control, following the use of certain persistent insecticides which are especially deleterious to tile parasites and predators of the pest species involved. Consequently, the possible detrimental effects of insecticides and fungicides to biological control organisms has become an important consideration in spray programmes where introduced parasites and predators have been outstand successful in the control of pests. Coffee planters in Kenya and Tanganyika have experienced insect outbreaks which were attributed to the use of insecticides, especially DDT and dieldrin for the control of various pests. For this reason many planters have come to have a greater appreciation of biological control organisms and give considerations to them in their spray programmes.
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East African Agricultural and Forestry Journal
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