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

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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