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Striga aspera and Striga hermonthica can cause serious losses in upland rice in the guinea savanna areas of West Africa. In pot experiments, seed from Striga spp., collected from maize and rice crops in northern Ivory Coast, were sown with maize, rice, millet and sorghum. S. aspera collected from rice and maize, grew on maize, sorghum and rice, but not on millet. S. hermonthica from either maze,...
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