Incidence of leaf folder (Omiodes indicata Fab.) and management of defoliators in soybean
Keywords:
Leaf folder, Soybean, Incidence, Rabi-Summer, Sowing DatesAbstract
The field experiment was carried out to observe the incidence of soybean leaf folder (Omiodes indicata Fab.). The crop was sown on six different dates at fortnight intervals. The incidence of leaf folder was observed from three weeks after sowing in an early sown crop and lasted throughout the crop period. While, in late sown crop leaf folder incidence lasts till 9-10 weeks after sowing. The peak population of leaf folder was observed at 3rd MSW on November’s first fortnight sown crop (15.10 larvae/MRL) followed by December’s second fortnight (13.20 larvae/MRL) and November’s second fortnight (12.60 larvae/MRL) at 5th and 8th SMW, respectively. Among the various insecticides evaluated, Chlorantraniliprole + Lambda-cyhalothrin 150 ZC @ 0.5 ml/litre was found more effective compared to other insecticides in terms of both grain yield and B:C ratio.
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