Population dynamics of Helicoverpa armigera on Chick pea, Pigeon pea and Cotton in Correlation with Weather parameters

* K. V. (PG) College, Chaudhary Charan Singh University, Meerut 250 004.

** Krishi Vigyan Kendra, P.B. No.8, Distt. Rajsamand (Raj.) 313 324, India.

Central Institute for Cotton Research, Regional Station, Sirsa 125 055.