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  1. Kerala Agricultural University Digital Library
  2. 2. Institutional Publications
  3. Reprints
a
Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/4255
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dc.contributor.authorBaby P Skaria-
dc.contributor.authorDas, N M-
dc.date.accessioned2019-03-07T06:41:31Z-
dc.date.available2019-03-07T06:41:31Z-
dc.date.issued1981-
dc.identifier.citationAgricultural Research Journal of Kerala, 19(2), 33-38.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/4255-
dc.description.abstractThe relative efficacy of 1 2 contact insecticides to the third and fifth instar nymphs of the brown plant-hopper Nilaparvata lugens was assessed in the laboratory by assessing their LC 50 values. These chemicals were found to be equally effective against both the stages of the pest. Insecticides found most effective were carbaryl, monocrotophos, quinalphos, fenthion, phosalone, fenitrothion and dichlorvos. On relative cost basis these may be ranked ascarbaryl, monocrotophos dichlorvos, phosolone, fenthion, fenitrothion and quinalphos, against third instar nymphs and carbaryl, monocrotophos, quinalphos, fenitrothton, fenthion, phosalone and dichlorvos against fifth instar nymphs.en_US
dc.language.isoenen_US
dc.publisherKerala Agricultural Universityen_US
dc.subjectInsecticides-riceen_US
dc.subjectbrown plant-hopperen_US
dc.titleContact toxicity of different insecticides to third and fifth instar nymphs of brown plant hopper Nilaparvata lugens stal (Delphacidae : Homoptera)en_US
dc.typeArticleen_US
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