1Department of Entomology, S.V. Agricultural College
2Regional Agricultural Research Station, Tirupati Acharya N.G. Ranga Agricultural University, Andhra Pradesh, India
*Present address: Division of Entomology, Indian Agricultural Research Institute, New Delhi 110 012, India
**Corresponding author E-mail: kolla.sreedevi@gmail.com
Online published on 27 June, 2014.
Highest percent reduction of Maruca vitrata (Geyer) larvae on pigeon pea cultivar TRG-22 was observed with thiodicarb (75%WP) followed by spinosad (45% SC), novaluron (10% EC) and chlorpyriphos (20% EC) + DDVP (76% EC). The efficacy of insecticides against pod borer in the descending order was: thiodicarb (1g l−1) > novaluron (1 ml l−1) > spinosad (0.3 ml l−1) > emamectin benzoate (0.1 g l−1) > endosulfan (2 ml l−1) > lambda cyhalothrin (1 ml l−1) > flubendiamide (0.1 ml l−1) > rynaxypyr (0.25 ml l−1) > NSKE (50g l−1) > Bacillus thuringiensis (1 g l−1). All the treatments were significantly superior over control in reducing the pest populations. Thiodicarb recorded not only the lowest pod damage but also resulted in the highest pod yield of pigeonpea.
Chemical control, thiodicarb, spinosad, pigeonpea, legume pod borer
