How red hairy caterpillars are controlled in maize ?

Caterpillars feed and destroy the whole plant if the attack is in the early stages of growth. Control is done by detecting and destroying egg masses and young caterpillar. The field should be ploughed out after the crop is harvested, so as to expose pupae. Thiodan 35 EC @ 27 ml in 18 litres water should be sprayed only as last resort.