Efficacy of Thiocyclam Hydrogen Oxalate as Foliar Sprays against Stem borers and Leaf folder in Rice

Efficacy of thiocyclam hydrogen oxalate (PII 032SP), a new insecticide of neristoxin group was evaluated @ 300, 400 and 500g a.i./ha and compared with the check insecticides, chlorpyriphos (500g a.i./ha) and triazophos (350g a.i./ha) under irrigated conditions in different districts of Punjab against stemborers and leaf folder infesting rice during Kharif 2006, 2007 and 2008. Thiocyclam hydrogen oxalate at higher dosages of 400 and 500 g a.i./ha provided an effective control of stemborers statistically at par with the check insecticides (dead hearts ranging from 0.87–1.26% and white-ears from 1.24–1.85%) but, significantly better than its lower dose i.e. 300g a.i./ha and the untreated control (1.68–3.97% dead hearts and 2.21–5.19% white-ears). Per cent damaged leaves (1.382.30%) in all the treatments were on par with each other but significantly lower than the control (10.47%). Paddy yield in treated plots ranged from 45.31–47.60 q/ha which was significantly higher than the control (40.93 q/ha).