Seasonal incidence of pod borer complex of pigeon pea, (Cajanus cajan (L.) Mill Sp.)

Abstract

The studies entitled ‘Seasonal incidence of pod borer complex of pigeon pea (Cajanus cajan (L.) Millsp)’ were conducted during 2017-2018 and 2018-2019. Seasonal incidence of pigeon pea against various pod borers revealed that the maximum percent infestation of Maruca vitrata (Geyer) (15.12) was observed in 47th SMW (4th week of November), the maximum percent infestation of Exelastis atomosa (Walsingham) (8.91) was observed in 45th SMW (1st week of November), the maximum percent infestation of Helicoverpa armigera (Hubner) (18.78) was observed in 52nd SMW (5th week of December) and the peak percent infestation of Melanagromyza obtusa (Malloch) (18.38) was observed in 1st SMW (1st week of January). Correlation of pest incidence and weather parameters revealed that the incidence of M. vitrata showed non-significant correlation with all the meteorological parameters, the incidence of H. armigera showed negative significant correlation with minimum temperature, the incidence of E. atomosa showed negative correlation with morning relative humidity and evening relative humidity and the incidence of M. obtusa showed negative correlation with minimum temperature.