Please use this identifier to cite or link to this item: http://repo.lib.jfn.ac.lk/ujrr/handle/123456789/1341
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dc.contributor.authorRajeshkanna, S.
dc.contributor.authorMikunthan, G.
dc.date.accessioned2020-02-20T05:28:20Z
dc.date.accessioned2022-06-24T07:22:47Z-
dc.date.available2020-02-20T05:28:20Z
dc.date.available2022-06-24T07:22:47Z-
dc.date.issued2017
dc.identifier.urihttp://repo.lib.jfn.ac.lk/ujrr/handle/123456789/1341-
dc.description.abstractAmaranthus stem borer, Hypolixus truncatulus(F.) (Coleoptera: Curculionidae) has become a major problem in Amaranthus cultivations in Mannar and Kilinochchi districts compelling farmers to abandon cultivations. This study was carried out to record its damage symptoms on Amaranthus and economical and safer methods for its management. The important damage was holes on the stems and fecal materials and different larval stages along the stem. Its biology was studied in insect-proof caged plants and plastic containers. Field experiments were conducted in Mannar to determine an efficient method to manage H. truncatulus. Total life cycle of this pest completed in 42.3 ±0.7 days with five larval instars. Egg period, larval period, and pupa period was determined as 3-5 days, 29-32 days, 9-10 days, respectively. Experiment plots treated with boiled Neem seed extract (5% w/v) and Coleus aromaticous leaf extract (20% w/v) recorded significantly lower stem borer populations (0.5 - 0.4 stem borers/ m2) as compared to the untreated control (9.06 stem borers/ m2 ).en_US
dc.language.isoenen_US
dc.publisherProceeding of the Annals of Sri Lanka Department of Agriculture 2017en_US
dc.subjectAmaranthusen_US
dc.subjectColeus aromaticousen_US
dc.subjectStem Boreren_US
dc.subjectHypolixu struncatulusen_US
dc.titleBIOLOGY AND MANAGEMENT OF Amaranthus STEM BORER (Hypolixus truncatulus) (COLEOPTERA: CURCULIONIDAE)en_US
dc.typeArticleen_US
Appears in Collections:Agricultural Biology

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