Abstract

Euphorbia tirucalli L. (Euphorbiaceae) was evaluated against a number of pests to assess its pesticidal properties. Using various bioassays, it was established that its latex is effective against the bean aphid (Brevicoryne brassicae) and Anopheles mosquito larvae (Anopheles Gambiae and A. fenestus) as well as a number of nematodes. It, however, fell short of obtaining economic threshold levels with the diamond back moth (Plutella xylostella) and others like Purex spp. Its usefulness as a plant-based remedy was underscored but it was observed that a lot remains to be established like its toxicity to non-target organisms, its residual levels at harvest and long term effect to the environment among others, in order to allow public use and commercialization. Its potential as a plant-based pesticide was observed pending extraction of active ingredients from its latex.

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