• Assay of some systemic insecticides againstHyadaphis erysimi (Kalt.) onBrassica campestris L., var,sarson Prain

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    • Keywords


      Systemic insecticides; toxicity and persistence

    • Abstract


      Five systemic organophosphorus insecticides were tested for their intrinsic toxicity in laboratory and persistence of their field-weathered deposits following spray onsarson crop (Brassica campestris L., var.sarson Prain) at recommended concentrations against mustard aphidHyadaphis erysimi (Kalt.). Phosphamidon and demeton-S-methyl proved to be sufficiently toxic compounds and provided protection to the crop for more than 3 days. Thiometon compared to dimethoate was a less toxic insecticide but relatively more persistent. Formothion was found to be the least toxic and least persistent insecticide.

    • Author Affiliations


      D N Vaidya1 S F Hameed1 N P Kashyap1

      1. Department of Entomology-Zoology, College of Agriculture, Palampur - 176062
    • Dates


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