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Authors
Affiliations
1 Department of Agricultural Entomology and Nematology, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, KARAIKAL (PUDUCHERRY), IN
Source
Asian Journal of Bio Science, Vol 10, No 1 (2015), Pagination: 39-42
Abstract
To study the effect of newer insecticides viz., flubendiamide 39.35 M/M SC, chlorantraniliprole 18.5 SC, thiamethoxam 25 WG, bifenthrin 10 EC, cartap hydrochloride 50 SP, indoxacarb 14.5 SC, emamectin benzoate 5 SG and phosphamidon 40 SL to natural enemies of rice pests, a field experiment was conducted at the Eastern farm of Pandit Jawaharlal Nehru College of Agriculture and Research Institute (PAJANCOA and RI), Karaikal during late Rabi 2013 (Nov.- Feb.). Two foliar applications were carried out at an interval of fifteen days after leaf folder larvae reached economic threshold level (10 %). The results showed that the overall mean population of coccinellids was found to be more in the untreated check (1.31 and 1.65 / hill) followed by indoxacarb 14.5 SC at 72.50 g a.i. / ha (0.92 and 1.16 / hill) in the first and second foliar application. The overall mean population of spiders was high in the untreated check (1.32 and 1.55 / hill), followed by indoxacarb 14.5 SC at 72.50 g a. i. / ha (1.07 and 1.15 / hill) over the other treatments.
Keywords
Newer Insecticides, Predatory Coccinellids, Spiders, Costal Rice Ecosystem.
