Mosquitocides of <i style="">Argeratum conyzoides</i>, <i style="">Boscia salicifolia</i> and <i style="">Grewia monticola</i>

Abstract

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<i style="">A. conyzoides, B. salicifolia</i> and <i style="">B. monticola</i> plants used by some of the indigenous rural people of Hurungwe district, Mashonaland West Province, Zimbabwe could be developed into useful mosquitocides. The dried, powdered leaves of <i style="">A. conyzoides</i> and <i style="">B. monticola,</i> and the dried powdered bark of <i style="">B. salicifolia</i> were each burnt on glowing charcoal to produce smoke that knocked down or killed laboratory-reared <i style="">A. aegypti</i> mosquitoes. <i style="">B</i>. <i style="">salicifolia </i>achieved 100% knockdown of the test mosquitoes within 20 minutes of application, whilst <i style="">A. conyzoides </i>and<i style=""> G. monticola </i>achieved the 100% knockdown within 30 minute<i style="">s</i>. The plants could be used as bases for the production of mosquitocides.&nbsp;

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