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Commelina benghalensis (tropical spiderwort - TS) is an invasive herbaceous plant, native to South and Southeast Asia and one of the worst agricultural weeds in the tropics. Its management is notoriously difficult because of its ability to regenerate from small fragments and its tolerance to glyphosate applications. There are no published records of biocontrol attempts against TS involving either...
A two-year survey of the fungi associated with two important congeneric pantropical weeds, Euphorbia heterophylla and E. hirta, was conducted in part of their native range in southern Brazil. Sampling was concentrated mainly in Rio de Janeiro State and ten species were identified as pathogens of these weeds. Two taxa, Botrytis ricini and Uromyces euphorbiae, were common to both weed hosts. Alternaria euphorbiicola, Bipolaris euphorbiae, Melampsora...
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