Abstract
Use of insecticides on cotton is kept to a minimum in Zimbabwe by the recommendation that applications are timed on the basis of routine crop-inspection (scouting) data. Greater acceptance of field scouting by large-scale cotton producers was achieved by providing training for farm scouts. The syllabus for courses financed from a crop levy included recognition of insect pests and methods of recording their numbers. Subsequently, courses on data interpretation improved the timing of spraying, but scouting efficiency was increased most markedly by an on-farm check scouting scheme. Small-scale cotton farmers also are now provided with courses. Training schemes have been an important factor in the adoption of a pest-management programme. Cotton production has increased from less than 3000 t of lint in 1964 to over 70 000 t in 1982.
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