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Survey and evaluation of nuclear polyhedrosis virus (NPV) for the control of helicoverpa armigera (hubner) (lepidoptera:nocduidae) on selected vegetable crops in kenya.
(Kenyatta University, 2000-09)
Samples of Helicoverpa armigera larvae obtained from several sites and crops in Kenya in surveys carried out during June 1998 to October 1999 were examined at ICIPE, Nairobi. They revealed natural infection by nuclear ...