Larry Godfrey, University of California, Davis entomologist, is seeing higher numbers than usual of the blue alfalfa aphid and pea aphid in California's Kern and Imperial counties this spring.
Adult blue alfalfa aphid. Photo by Jack Clark Kelly, courtesy of UC Statewide IPM Program.
Blue alfalfa aphid antennae.
Alfalfa damage from the blue alfalfa aphid.
This spring, some alfalfa growers are finding high numbers and related alfalfa damage from the the blue alfalfa aphid and pea aphid in California's Kern and Imperial counties.
Western Farm Press
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