Management of rice insects by granular formulation of chlorantraniliprole along with foliar sprays of some new molecules
Management of rice insects by granular formulation of chlorantraniliprole along with foliar sprays of some new molecules
1Sitesh Chatterjee, 1Chirasree Gangopadhyay and 2Santosh Kumar Roy
1Sitesh Chatterjee, 1Chirasree Gangopadhyay and 2Santosh Kumar Roy
ABSTRACT
The experiment was conducted during kharif seasons of 2014 and 2015 to evaluate field bio-efficacy of new generation molecules against rice insect-pests. Control of pests in seedbed is relatively less expensive than transplanted main-field because of smaller area of nursery that can be managed better way as compared to transplanted field. In the present study, chlorantraniliprole granule was applied both in seedbed and transplanted field along with spraying of some new generation insecticides like indoxacarb, flubendiamide, spinosad and chlorantraniliprole to test their efficacy against different rice insect-pests. The study found that whorl maggot can be managed properly in seedbed application with chlorantraniliprole granule 0.4% WW/SR in seven days prior to seedling uprooting along with spraying of indoxacarb 14.5 SC /chlorantraniliprole 18.5% SC /flubendiamide 48% SC in the main-field. The leaf folder was also managed properly by application of chlorantraniliprole granule in seedbed along with spraying of chlorantraniliprole/spinosad in the main-field. The incidence of dead heart incidence was found lowest in chlorantraniliprole granule when applied in seedbed followed by spraying of chlorantraniliprole in the main-field or chlorantraniliprole granule application. Chlorantraniliprole granule application along with spraying of same chemical provided the best result against white heads due to stem borer followed by chlorantraniliprole granule application in seedbed or the same granular application in the main-field along with spraying of chlorantraniliprole/flubendiamide in the main-field. The highest grain yield of rice was obtained from plot receiving granule application with spraying of chlorantraniliprole in transplanted field followed by chlorantraniliprole granule application in seedbed along with spraying of chlorantraniliprole in main-field. The spider population was recorded maximum in the chlorantraniliprole granule applied plots in comparison to scheduled spray plots.
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December 2015
Vol. 7, Iss. 1-2, Pages 1-18
