25 April 1997

Linseed at risk

SUNNY, dry weather means flax flea beetle poses a real risk to spring-drilled linseed. "Although most seed was treated with gamma-HCH, it only prevents below-ground attack," says ADAS enthomologist, Jon Oakley.

"Spraying is necessary at the first sign of significant leaf shotholing," warns Rob King, insecticide manager at Cyanamid.n