author(s)
AD Sarode, Zanwar PR, Matre YB and Latpate CB

abstract
Cotton is one of the important cash crop of farmers community in India and its production affected by insect pest. In order to determine the seasonal incidence of major insect pest of cotton and its correlation with weather parameters these studies carried out was department of Agricultural Entomology, VNMKV, Parbhani. The incidence of aphids was highest (20.4 aphids/three leaves) during 40^th MW. Jassid highest population (21.6 jassids/three leaves) was observed during 37^th MW. Thrips reached highest incidence (30.20 thrips/three leaves) in 41^rd MW. Highest incidence or population of whitefly (24.50 whiteflies/three leaves) was noticed during 37nd MW. The larval population of Helicoverpa armigera was highest (5.40 larvae/plant) in 43^th MW. Percent rosette flowers due to P. gossypiella was highest (27.17%) in 41^th MW. Larval population of P. gossypiella was highest (25 larvae/ 20 green boll) in 48^th MW and per cent green boll infestation due to P. gossypiella is highest (125%) in 48^th MW. Simple correlation studies revealed that weather parameters viz., Aphid population was negatively significant with the rainfall and maximum temperature. The Jassid population was negatively significant with the maximum temperature. Thrips population was negatively significant with the rainfall, maximum temperature, morning relative humidity as well as wind velocity.