Determining economic threshold level for the control of bollworms of cotton in the Punjab

CHAMKAUR Singh

Determining economic threshold level for the control of bollworms of cotton in the Punjab - Entomology - Ludhiana PAU 1991 - 143,12L

Economic threshold (ET) levei of 5 per cent incidence of pink bollworm among green bolls or 5 per cent damage of spoiled and American bollworms among shed fruiting bodies and when the sprays were done at the level of 2 larval units of American bollworm an


COTTON -- DISEASES AND PESTS

BOLLWORMS CONTROL COTTON COTTON -- DISEASES AND PESTS ENTOMOLOGY ETL HELIOTHIS -- CONTROL

T 633.519.78 C28D

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