Researchers from the University of Illinois found "widespread occurrence" of plant-parasitic nematodes in a survey of miscanthus and switch grass used for biofuel production. The parasite was detected in 37 miscanthus and 48 switch grass test plots in six states in 2008 and 2009. The presence of nematodes is "of great economic importance" because they influence plant growth and biomass yield, said Tesfamarian Mekete, the lead researcher.

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