摘要: Most all agricultural crops suffer damage to some extent dtie certaiin insects that eat or otherwise the crop. Attempts control pests directly through utse of insecticides are often made by generously applying whenever appear in numbers above arbitrary level. If a mathematical model for biological system is available, then not only can effects such direct be examined, but methods optimal theory may used determinle rational programs minimizing costs as well ecological and crop costs. In this paper, influence human added known prey-predator system. Optimal subject selective insecticide control, general determined cost ftunction dependent upoIn both economic control.
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