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Published online by Cambridge University Press: 19 September 2011
M. Knapp and S. S. Kashenge
Effects of different neem formulations on the twospotted spider mite, Tetranychus urticae Koch, on tomato (Lycopersicon esculentum Mill.)
The equation for calculating repellence, shown on page 3 of Insect Science and Its Application, Volume 23 Number 1, under the subheading “Repellence and Oviposition Deterrence” should read: