Effect of Different Doses of Newer Insecticides Against Sucking Pests of Okra

By : S.K. Bhalkare, S. R. Patil, G. K. Lande

Page No: 183-187

Abstract
Field experiment was conducted to evaluate the efficacy of some new insecticides against sucking insect pests viz., leafhopper, aphid and whitefly in okra. Three sprays of different concentrations of insecticides viz., Thiamethoxam 25 WG, Lambda cyhalothrin 5 EC and Triazophos 40 EC were made at 15 days interval on the okra variety Akola Bahar, sown at Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during Kharif 2012. All the treatments were found to be superior over the untreated control. Amongst the treatments tested, the cumulative effect of foliar spray of Thiamethoxam 25 WG @ 0.006 percent was effective against aphids followed by Lambda cyhalothrin 5 EC @ 0.004 percent, Thiamethoxam 25 WG @ 0.008 percent, Thiamethoxam 25 WG @ 0.009 percent, Lambda cyhalothrin 5 EC @ 0.005 percent, Triazophos 40 EC @ 0.025 percent, Triazophos 40 EC @ 0.031 percent, Lambda cyhalothrin 5 EC @ 0.006 percent and Triazophos 40 EC @ 0.04 percent. While, Thiamethoxam 25 WG @ 0.006 percent was effective against jassids population followed by Thiamethoxam 25 WG @ 0.008 percent, Thiamethoxam 25 WG @ 0.009 percent, Lambda cyhalothrin 5 EC @ 0.004 percent, Lambda cyhalothrin 5 EC @ 0.005 percent, Triazophos 40 EC @ 0.025 percent, Lambda cyhalothrin 5 EC @ 0.006 percent, Triazophos 40 EC @ 0.031 percent and Triazophos 40 EC @ 0.04 percent. Also, in case of whitefly the effective treatment recorded Thiamethoxam 25 WG @ 0.006 percent followed by the treatments Lambda cyhalothrin 5 EC @ 0.004 percent, Lambda cyhalothrin 5 EC @ 0.005 percent, Thiamethoxam 25 WG @ 0.008 percent, Triazophos 40 EC @ 0.025 percent, Lambda cyhalothrin 5 EC @ 0.006 percent, Thiamethoxam 25 WG @ 0.009 percent, Triazophos 40 EC @ 0.031 percent and Triazophos 40 EC @ 0.04 percent all at par with each other.

Authors :
S. R. Patil, G. K. Lande and S.K. Bhalkare : Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola-444 104, Maharashtra, India