Field efficacy of some newer chemical insecticides against stem borer, Nupserha sp. near vexator (Pascoe) in sunflower (Helianthus annuus L.)


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FIELD EFFICACY OF NEWER CHEMICAL INSECTICIDES AGAINST STEM BORER IN SUNFLOWER

Authors

  • N E JAYEWAR Oilseeds Research Station, Latur-413 512, Maharashtra
  • B V PATIL Oilseeds Research Station, Latur-413 512, Maharashtra
  • H BASAPPA Oilseeds Research Station, Latur-413 512, Maharashtra

https://doi.org/10.56739/jor.v32i1.141902

Keywords:

Field efficacy, Newer insecticides, Sunflower, Stem borer

Abstract

A field experiment was conducted to evaluate the efficacy of some newer chemical insecticides viz., thiodicarb 75WSP, indoxacarb 14.5SC, spinosad 45SC, profenophos 50EC, dichlorovos 76EC and chlorpyrifos 20EC against stem borer Nupserha sp. near vexator in sunflower at Oilseeds Research Station, Latur, Maharashtra. Results revealed that all the treatments were significantly superior in reducing the population of stem borer over untreated control. Among the insecticides, indoxacarb @ 1ml/l was most effective and was found on par with spinosad @ 0.3ml/l, profenophos @ 2ml/l and thiodicarb @ 2gm/l. Highest seed yield was recorded with spinosad (1416 kg/ha) and found on par with indoxacarb (1401 kg/ha) whereas the lowest yield was observed in untreated control (1010 kg/ha). The maximum incremental benefit cost ratio was obtained with application of chlorpyrifos (4.96) followed by indoxacarb (4.27), profenofos (3.43), and spinosad (3.09).

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References

Patil B V, Bilapate G G and Jadhav R N 2009. Control of stemborer [Nupserha sp. near vexator (Pascoe)], a new pest of sunflower (Helianthus annus L.) by conventional insecticides. Helia, 32: 91-98.

Patil B V and Basappa H 2009. Management of defoliators and capitulum borer in sunflower (Helianthus annuus L.) through new insecticides. Journal of Oilseeds Research, 26(1): 32-34.

Rajmohan N 1976. Pest complex of sunflower a bibliography. PANS, 22: 546-563.

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Submitted

2023-09-04

Published

2015-12-31

How to Cite

N E JAYEWAR, B V PATIL, & H BASAPPA. (2015). Field efficacy of some newer chemical insecticides against stem borer, Nupserha sp. near vexator (Pascoe) in sunflower (Helianthus annuus L.): FIELD EFFICACY OF NEWER CHEMICAL INSECTICIDES AGAINST STEM BORER IN SUNFLOWER. Journal of Oilseeds Research, 32(2). https://doi.org/10.56739/jor.v32i1.141902