Field Appraisal of Controlled Release Formulation of Phorate Against Rice Leaf Folder Kumar Jitendra, Rao N.B.V. Chalapathi1, Singh Vidya S.1, Parmar Balraj S. Division of Agricultural Chemicals, I.A.R.I., New Delhi, 110012, India. jitendrakumar7@yahoo.com 1Division of Entomology, I.A.R.I., New Delhi, 110012, India. jitendrakumar7@yahoo.com Abstract Controlled release formulations of phorate prepared in a polyvinyl chloride matrix (PVC-10) provided a comparable control of the rice leaf folder, Cnaphalocrocis medinalis as compared to thiamethoxam and profenphos in field grown rice. A single application of PVC-10 at 0.75 kg a.i. ha−1 was superior to 0.5 kg a.i. ha−1 of PVC-10 and 3 applications each of thiamethoxam and profenphos controlling C. medinalis in the field. The gram yield in insecticidal treated plots was significantly higher than control, the differences being non-significant among the various treatments. Predator complex (coccinellids, spiders, ground beetles and rove beetles) was less affected with phorate PVC-10 treatments and no residues were detected in rice grains at harvest. Top Keywords Controlled release formulation, Oryza sativa, Phorate, Cnaphalocrocis medinalis.. Top |