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Traditional use of mosquito-repellent plants in western Kenya and their evaluation in semi-field experimental huts against Anopheles gambiae: ethnobotanical studies and application by thermal
The semi-field system described appears a promising alternative to full-field trials for screening large numbers of candidate repellents without risk of malaria exposure and was evaluated against the malaria vector Anopheles gambiae s.s. Expand
Intercropping increases parasitism of pests
Intercropping with the non-host molasses grass, Melinis minutiflora, significantly decreased levels of infestation by stem-borers in the main crop and also increased larval parasitism of stem- borers by Cotesia sesamiae. Expand
Repellency of essential oils of some Kenyan plants against Anopheles gambiae.
Four synthetic blends of the major components of the essential oils were found to exhibit comparable repellent activity to the parent oils, and eight constituents of the different oils exhibited relatively high repellency. Expand
The preparation of synthetic analogues of strigol
A range of analogues of the natural germination stimulant, strigol, for parasitic weeds of the genera Striga and Orobanche, has been prepared. Most of the products contain an α-formyl-γ-lactone (orExpand
On-farm evaluation of the 'push-pull' technology for the control of stemborers and striga weed on maize in western Kenya
Assessment of the ‘push–pull’ technology in maize-based farming systems in western Kenya demonstrates that the technology is equally effective in controlling both pests with concomitant yield increases under farmers’ conditions. Expand
Control of Witchweed Striga hermonthica by Intercropping with Desmodium spp., and the Mechanism Defined as Allelopathic
During investigations into the control of insect damage to maize crops in subsistence farming in Kenya, the fodder legumes silverleaf (Desmodium uncinatum) and greenleaf were found to reduce dramatically the infestation of maize by parasitic witchweeds such as Striga hermonthica. Expand
Field efficacy of thermally expelled or live potted repellent plants against African malaria vectors in western Kenya
To estimate the effectiveness of live potted plants and thermal expulsion of plant materials in repelling African malaria vectors in traditional houses in western Kenya, a large number of traditional houses have been destroyed by fire. Expand
Integrated pest management: the push–pull approach for controlling insect pests and weeds of cereals, and its potential for other agricultural systems including animal husbandry
This paper describes the ‘push–pull’ or ‘stimulo-deterrent diversionary’ strategy in relation to current and potential examples from the authors' own experiences, as well as examples from animal husbandry in Africa. Expand
Relationship between virulence and repellency of entomopathogenic isolates of Metarhizium anisopliae and Beauveria bassiana to the termite Macrotermes michaelseni.
The results show an interesting co-evolutionary phenomenon in which the termite's response to either M. anisopliae or B. bassiana is directly related to potential harm these fungi can inflict on the insect and that the virulent strains are more likely to be recognized from some distance and avoided. Expand
New mosquito larvicidal tetranortriterpenoids from Turraea wakefieldii and Turraea floribunda.
Four new limonoids comprising a vilasininoid 1 and three havanensinoids 2-4 were isolated from the chloroform fractions of the methanol extracts of Turraea wakefieldii and T. floribunda to show mosquito larvicidal activity against third-instar larvae of Anopheles gambiae sensu stricto. Expand