TY  - BOOK
AU  - CHAMKAUR Singh
TI  - Determining economic threshold level for the control of bollworms of cotton in the Punjab
U1  - T 633.519.78 C28D 
PY  - 1991///
CY  - Ludhiana
PB  - PAU
KW  - COTTON -- DISEASES AND PESTS
KW  - BOLLWORMS
KW  - CONTROL
KW  - COTTON
KW  - ENTOMOLOGY
KW  - ETL
KW  - HELIOTHIS -- CONTROL
N2  - 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
ER  -