Bio-efficacy of caterpilin (Bacillus thuringiensis var-ukrstati) against pod borer (Helicoverpa armigera) infesting pigeon pea Kanitkar Sandeepa1, Raut V. M.2, Patil R. K.3, Kulkarni Medha4, Kadam Meghraj5* 1Kan Biosys Pvt. Ltd., Kanitkar Path, F. C. Road, Pune - 411004, India 2Kan Biosys Pvt. Ltd., Kanitkar Path, F. C. Road, Pune - 411004, India 3University of Agricultural Sciences, Entomology Department, Dharwad - 580005, Karnataka, India 4Kan Biosys Pvt. Ltd., Kanitkar Path, F. C. Road, Pune - 411004, India 5Kan Biosys Pvt. Ltd., Kanitkar Path, F. C. Road, Pune - 411004, India * Corresponding Author: meghrajkadam@kanbiosys.com
Online published on 4 January, 2021. Abstract The pod borer (Helicoverpa armigera) is a key Lepidoptera pest of pigeon pea in Maharashtra and Karnataka state. Bio-efficacy of Caterpilin (Bacillus thuringiensis i.e.Bt) alongwith chemical insecticides was evaluated against pod borer during kharif season at University of Agricultural Sciences, Dharwad. Results compiled revealed that Pop (Chemical insecticide) + Caterpilin (Bt) @ 1.0 g/L treatment to be more promising in controlling larval population of pod borer over control during first spray (49.13 to 66.84%), second spray (48.97 to 59.68%) and third spray (43.33 to 63.98%). Similarly, the above treatment recorded maximum reduction in pod damage (49.54%) and seed damage (50.52%) with increase in yield upto 96.21% over control and 30.44% over chemical (Pop) treatment. Similarly, spraying of Caterpilin (Bt.) did not show any phytotoxic effect on pigeonpea crop. Top Keywords Piogenonpea, Cajanus cajan, Bt, Bacillus thuringiensis, Pod borer, Helicoverpa armigera, Yield. Top |