Mar 8, 2010
Malcolm Sanford said: More evidence that pyrethroids are not benign in the environment.
Pesticides are agents designed to rid targeted portions of the human environment of undesirable critters - such as boll weevils, roaches or carpenter ants. They're not supposed to harm beneficials. Like bees. Yet a new study from China finds that two widely used pyrethroid pesticides - chemicals that are rather "green" as bug killers go - can significantly impair the pollinators' reproduction. Both chemicals are widely used in North America and elsewhere, including China. And, the researchers point out, the concentration of each pesticide that produced adverse effects in the experiments was at or below those that bees could encounter while pollinating treated crop fields.