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After last picking, immature bolls and stalks left in cotton field must be removed, Agriculture Experts.

Department of Agriculture Punjab has directed farmers to start off season management for cotton crop. Director Agriculture Faisalabad said that after the last picking of cotton, field must be grazed by goats and sheep, in order to let them feed on pink bollworm and its larval stage. As pink bollworm is a major pest of cotton, so the objective of the management is to reduce the overwintering population that will threaten the following season’s crop. They said that rotavator must be used to turn the soil, in order to remove immature bolls and cotton stubbles left in the field. After cutting the cotton sticks, field should be deeply ploughed. The cotton remnants in different cotton industries should be removed to avoid the overwintering stage.

Maintenance of host free period during off-season is a must to ensure a pink bollworm free crop next season. Effective measures for prevention of pink bollworm damage include post-harvest, off-season and pre planting actions. Allowing cattle grazing of the left over green bolls on the plant at the end of crop season, timely crop termination to maintain closed season, destruction of cotton stubbles immediate to harvest, avoiding stacking of cotton stalks for fuel purpose over long periods and summer deep ploughing to expose the pupae of the surviving larvae constitute post-harvest and off season cultural measures.

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