Brazil Embrapa presents organic insecticide
Brazilian researchers have developed a “natural” insecticide for use on cotton. The agricultural research corporation, the Embrapa, has presented a kaolin-based organic insecticide for the control of cotton boll weevils ( Anthonomus grandis). The corporation sees the development of products for use in organic cotton production as “among the major challenges facing Brazilian agricultural researchers”. Lead researcher Carlos Alberto Domingues da Silva advises that the product be applied whenever 5% of the crop’s bolls are attacked. Application makes the plant unrecognisable to the boll weevil, and impedes its feeding. He says that the product has been piloted in the north-east of the country on organic cotton farms, showing “similar efficiency to chemical pesticides on conventional crops”.