Integrated Approach in the Management of Corn Cob Borers
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Date
2013
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Publisher
Badan Penelitian dan Pengembangan Pertanian
Abstract
An experiment was conducted in farmers field in Tenali village, Guntur District of Andhra Pradesh, India
during winter 2010-11 and 2011-12 to evaluate three modules in 3500 sq.m area each against cob borer complex
whose incidence was found to be higher in corn (hybrid- 30V92) grown in rice fallows under no-till condition. First
module comprised of soil application of Carbofuran 3G @ 8 kg/ac, spraying of Chlorantriniliprole 20 SC @ 60 ml/ac,
pheromone traps with Helilure @ 6/ac & with Litlure @ 6/ac at silking stage. Second module comprised of soil
application of Chlorantriniliprole 0.4 G @ 4 kg/ac, spraying of Flubendiamide 480 SC @ 30 ml/ac, pheromone traps
with Helilure @ 6/ac & with Litlure @ 6/ac at silking stage. These two modules were compared with the farmers
practice (third module) where in no control measures were adopted. Data on percent damaged cobs, undamaged
cobs and insect-wise damaged cobs were recorded randomly in all modules at grain hardening stage. Data was
subjected to one way analysis. Among the two modules, first module was found to be more effective than the
second one with 74.39% and 55.82% undamaged cobs, respectively. Both modules were effective than the untreated
control (31.86% undamaged cobs). Cobs with live larvae of Spodoptera litura, Sesamia inferens, Helicoverpa
armigera and Euproctis sp in the first module was 3.46%, 9.86%, 1.42% and 0.04% respectively compared to
12.65%, 16.02%, 8.25% and 1.95% respectively in control.