SCREENING OF INSECTICIDES AGAINST THE ADULTS AND NYMPHS OF NILAPARVATA LUGENS STAL, THE RICE BROWN PLANTHOPPER

P. R. M. RAO and P. S. PRAKASA RAO

doi:https://doi.org/10.29321/MAJ.10.A02598

Madras Agricultural Journal

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SCREENING OF INSECTICIDES AGAINST THE ADULTS AND NYMPHS OF NILAPARVATA LUGENS STAL, THE RICE BROWN PLANTHOPPER

Author: P. R. M. RAO and P. S. PRAKASA RAO,

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

DOI:https://doi.org/10.29321/MAJ.10.A02598

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Abstract

Twelve commercial insecticides in EC and WP forms at 0.025, 005, 0,075 and 0.10% ai, were evaluated against adults and nymphs of BPH separately using diazinon 0.05% as standard. Considering the overall persistent toxicity against adults and nymphs based on 'PT values and overall mean persistent toxicity, chlorpyrifos and carboturan 0.05% 1 as foliar sprays followed by quinalphos and monocrotophos are the most effective in the control of BPH in the field.

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