Question
Calculate EIL in terms of pest population/ha with the
following figures. C= management cost per unit area = Rs. 3000/ha; V= market value (in Rs/ unit product) =Rs 1000/tonne; I= crop injury / Pest density = 1% defoliation /100 insect; D= Loss caused by unit injury = 0.05 tonne loss/ 1%defoliatio; K = Proportionate reduction in injury by pesticide application = 0.8(80% control)Solution
EIL=C/VIDK= 3000/1000x0.01x0.05x0.8 = 7500 insects/ ha.
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