TY - BOOK AU - Satwinder Singh TI - Effect of different agronomic practices and soil factors on the pupal survival of helicoverpa armigera (HUBNER) U1 - T 595.78 S16E PY - 1998/// CY - Ludhiana PB - PAU KW - LEPIDOPTERA KW - ENTOMOLOGY KW - HELICOVERPA ARMIGERA KW - PUPAL SURVIVAL KW - SOIL FACTORS N2 - The tilling adversely affected pupal survival Helicoverpa armigera the emergence of moth varied from 10 to 12% in plots tilled upto 15 cm depth, whereas it was 24% in fields which received no tillage. The light and heavy irrigation of the field reduced th ER -