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MBI's Grandevo safe to bees in US

The US EPA has granted biopesticide company Marrone Bio Innovations (MBI – Davis, California) permission to remove the bee toxicity warning from its bioinsecticide/acaricide, Grandevo (Chromobacterium subtsugae strain PRAA4-1T). The move follows a review of a third-party field study on Grandevo applied pre-bloom and during bloom to buckwheat during bee flight. Bee mortality was not statistically different from a water treatment control group, the company notes. “We can now reassure growers that Grandevo will not harm honeybees and can provide critically needed pest control throughout the growing season, including when bees are active,” says MBI’s global head of product development, Dr Tim Johnson. MBI introduced Grandevo in the US in late 2011 (Agrow No 626, p 25).

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