Bio-efficacy of Insecticides against Stem Borer, Chilo partellus Swinhoe and Shoot Fly, Atherigona approximata Malloch in Dual Purpose Pearl millet-A Combination Techniques

Author: S.K. Choudhary*, Swaroop Singh, J.K. Bana and B.L. Tandi

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Abstract

A field trial was conducted during 2014-15 and 2015-16 at Experimental Farm, Rajasthan Agricultural Research Institute (SKNAU), Durgapura, Rajasthan to manage stem borer and shoot fly in dual purpose pearl millet crop by using different newer insecticides in combinations as seed treatment and foliar spray. The results indicated that imidacloprid 600 FS @ 8.75 ml kg-1 as seed treatment with combination of imidacloprid 17.8 SL @ 300 ml ha-1 as foliar spray at 35 days after germination (DAG) (T1) was observed most effective than other treatments against stem borer and shoot fly in dual purpose pearl millet at vegetative and earhead stage. This treatment were recorded highest grain yield (22.37 q ha-1) and fodder yield (45.89 q ha-1), respectively. Among the tested molecules, T1 was gave highest net returns is Rs. 14495 ha-1 followed by T7 is Rs. 12373 ha-1 (Imidacloprid 600 FS @ 8.75 ml kg-1 as seed treatment with foliar spray of fenvalerate 0.4% @ 20 kg ha-1 at 35 DAG). The maximum B:C

Keywords

Infestation, management, pearl millet, stem borer, shoot fly, yield.

Conclusion

It is concluded that based on two year study, application of insecticides in combinations found most effective against stem borer and shoot fly in pearl millet. Seed treatment with imidacloprid 600 FS@ 8.75 ml kg-1 seed + foliar spray of imidacloprid 17.8 SL@ 300 ml ha-1 at 35 days after germination was observed lowest infestation of both the insects, highest grain yield and economic returns followed by seed treatment with imidacloprid 600 FS@ 8.75 ml kg-1 seed + foliar application of fenvalerate 0.4% @ 20 kg ha-1 at 35 days after germination in pearl millet crop.

References

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How to cite this article

Choudhary, S.K., Singh, S., Bana, J.K. and Tandi, B.L. (2021). Bio-efficacy of Insecticides Against Stem Borer, Chilo partellus Swinhoe and Shoot Fly, Atherigona approximata Malloch in Dual Purpose Pearl millet-A Combination Techniques. Biological Forum â