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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/123456789/4540
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dc.contributor.authorKunjamma P Mathew-
dc.contributor.authorNair, M R G K-
dc.contributor.authorAbraham, C C-
dc.date.accessioned2019-04-08T12:05:46Z-
dc.date.available2019-04-08T12:05:46Z-
dc.date.issued1978-
dc.identifier.citationAgricultural Research Journal of Kerala, 16(2), 188-192.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/4540-
dc.description.abstractThe LD 50 levels of toxicity of phosalone, endosulfan, malathion, quinalphos, fenthion, phosphamidon. monocrotophos, fenitrothion, dichlorvos, BHC and carbaryl to 4th instar larvae of the coconut caterpillar Nephantis seringa were 0.02428, 0,02925, 0.05288, 0.05614, 0.08416, 0.09477, 0.09833, 01013, 0.1639, 0.2920and 0.4990 respectrvely. Toxicity of residues of dichlorvos 0.05%, fenitrothion, 0.05%, malathion 0.05% on coconut leaves to 1st instar larvae of N. serhwpa had become negligible on the 8th day of their application and that of residues of quinaiphos 0.05%, phoslone 0.05% and BHC 0.2% on the 16th day of application; residues of carbaryl 0.2%, and monocrotophos 0.02% showed toxicity beyond 16 days. Toxicity of residues of the same concentrations of dichlorvos, fenitrothion, fenthion, endosulfan and phosphamidon on coconut leaves to adults of Bracon brevicomis had become negligible in 8 days of application and that of residues of malathion, quinaiphos, phosalone and BHC in 16 days of application; residues of monocrotophos and crabaryl remained toxic to parasites beyond 16 days.en_US
dc.language.isoenen_US
dc.publisherKerala Agricultural Universityen_US
dc.subjectCoconuten_US
dc.subjectcoconut caterpilleren_US
dc.subjectcoconut caterpiller-insecticideen_US
dc.subjectphosaloneen_US
dc.subjectendosulfanen_US
dc.subjectquinalphosen_US
dc.subjectmalathionen_US
dc.subjectfenthionen_US
dc.subjectphosphamidonen_US
dc.titleToxicity of newer insecticides to the coconut caterpillar Nephantis Serinopa Meyr and its parasite Bracon Brevicornis Wesmealen_US
dc.typeArticleen_US
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