TOXICITY, PERSISTENCE AND EFFECTIVENESS OF CERTAIN GRANULAR INSECTICIDES AGAINST THE BROWN PLANTHOPPER. Nilaparvata lugens Stal

PR. M. RADI and P. S. PRAKASA RAO

doi:https://doi.org/10.29321/MAJ.10.A02612

Madras Agricultural Journal

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TOXICITY, PERSISTENCE AND EFFECTIVENESS OF CERTAIN GRANULAR INSECTICIDES AGAINST THE BROWN PLANTHOPPER. Nilaparvata lugens Stal

Author: PR. M. RADI and P. S. PRAKASA RAO,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 70, Issue: apr-apr,

DOI:https://doi.org/10.29321/MAJ.10.A02612

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Abstract

Thirteen granular insecticides at four concentrations were evaluated for their efficacy and parsistence in pot culture and in micro field plots against adults and nymphs of brown planthopper. On the basis of 'PT' valves carbofuran and Mipcin at 0.5 to 0.75 Kg al/ha were found to be the most effective against both adults and nymphs.

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