Laboratory assessment of insecticidal properties of Tagetes minuta crude extracts against Brevicoryne brassicae on cabbage

dc.contributor.authorPhoofolo, M. W.
dc.contributor.authorMabaleha, S.
dc.contributor.authorMekbib, Sissay Bekele
dc.date.accessioned2016-11-28T11:40:25Z
dc.date.available2016-11-28T11:40:25Z
dc.date.issued2013
dc.description.abstractThe cabbage aphid, Brevicoryne brassicae is one of the most serious insect pests of cabbage in Lesotho. Chemical insecticides for efficient control of this pest are often unaffordable for resource-poor farmers. As a first step in a search for effective pest management techniques that can be affordable and easily available to these farmers, the aphicidal activities of Tagetes minuta crude extracts were evaluated against the cabbage aphid. A comparison was made on lethal and sub-lethal effects of T. minuta crude extracts from acetone, methanol, water and a mixture of acetone/methanol/water (7:7:1, v:v). The solvent system that produced the most toxic extract was the mixture, followed by methanol and water, whereas acetone produced the least toxic extract. The sub-lethal effect on cabbage aphid fecundity was well described by linear regression equations that showed significant reduction in fecundity as the concentration of crude extracts increased. The extract from the mixture solvent system had the strongest effect on fecundity.
dc.identifier.citationPhoofolo, M. W.*, Mabaleha, S. and Mekbib, S. B. (2013). Laboratory assessment of insecticidal properties of Tagetes minuta crude extracts against Brevicoryne brassicae on cabbage. Journal of Entomology and Nematology Vol. 5(6), pp. 70-76, October 2013. DOI: 10.5897/JEN2013.0080 ISSN 2006-9855
dc.identifier.issn2006-9855
dc.identifier.otherY
dc.identifier.uridx.doi.org/10.5897/JEN2013.0080
dc.identifier.urihttp://repository.tml.nul.ls/handle/20.500.14155/80
dc.language.isoEn
dc.publisherJournal of Entomology and Nematology
dc.rightsCreative Commons CC BY
dc.subjectBrevicoryne brassicae
dc.titleLaboratory assessment of insecticidal properties of Tagetes minuta crude extracts against Brevicoryne brassicae on cabbageen
dc.typeArticle
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