Estimation of Yield Losses Caused by Insect Pests on Pigeon Pea (Cajanus cajan (L.) Millsp.)
D. V. Muchhadiya *
Department of Entomology, College of Agriculture, Navsari Agricultural University, Bharuch (Gujarat), India.
J. J. Patel
Department of Entomology, College of Agriculture, Navsari Agricultural University, Bharuch (Gujarat), India.
D. R. Patel
Regional Cotton Research Station, Navsari Agricultural University, Bharuch (Gujarat), India.
R. B. Patel
Department of Entomology, College of Agriculture, Navsari Agricultural University, Bharuch (Gujarat), India.
*Author to whom correspondence should be addressed.
Abstract
Field experiment was carried out to estimate the yield losses in pigeon pea crop due to insect pests during kharif 2018-19, 2019-20 and 2020-21 at College of Agriculture, Navsari Agricultural University, Bharuch (Gujarat). Results revealed that avoidable yield loss due to insect pests in pigeon pea was recorded up to 38.48% when no plant protection measures are taken. Amongst different insect pests, the maximum damage was recorded due to pod borer, Helicoverpa armigera (34.90%) followed by pod sucking bugs, Clavigralla gibbosa (29.75%) and pod fly, Melanogromyza obtusa (23.64%). Pod damage due to spotted pod borer, Maruca vitrata and tur plume moth, Exelastis atomosa was recorded up to 14.09% and 5.60%, respectively.
Keywords: Yield loss, Helicoverpa armigera, Melanogromyza obtusa, Clavigralla gibbose, pigeon pea