Survey and surveillance of soybean pink pod borer, Cydia ptychora (Meyrick) in northern Karnataka

Abstract

Roving survey was undertaken in three districts of northern Karnataka viz., Dharwad, Belagavi and Haveri toknow the incidence pattern of pink pod borer, Cydia ptychora during kharif 2021. The highest larval incidence was observedin Dharwad district (4.12 larvae/5 plants) followed by Belagavi district (3.92 larvae/5 plants) and the lowest incidence wasrecorded in Haveri district (1.19 larvae/5 plants). The maximum number coccinellids and chrysopids were observed inBelagavi (0.71 and 0.41 adults/plant) and lowest population was recorded in Haveri (0.50 and 0.17 adults/plants). Fixedplot survey was conducted during kharif 2021 at Main Agricultural Research Station, University of Agricultural Sciences,Dharwad. The incidence of pink pod borer on soybean was noticed from 32nd Meteorological Standard Week (MSW) andcontinued till 40th MSW. The larval population in JS 335 variety ranged from 0.99 to 13.02 larvae/5 plants. The incidence ofnatural enemies were found from 32nd MSW onwards and the mean number of coccinellids (Cheilomenes sexmaculata andIlleis sp.) and chrysopids (Chrysoperla carnea) observed were 0.59 and 0.33 per plant, respectively