- (Public Value) UCANR: Safeguarding abundant and healthy food for all Californians
- Author: Ian Grettenberger
- Author: Rachael Long
- Author: Michael Rethwisch
- Author: Rob Wilson
“I'll be back!” And, they are, with a vengeance!
Just like the Terminator, those pesky blue alfalfa aphids are once again wreaking havoc in alfalfa fields, including those just breaking dormancy in colder climates. They are also showing up in the first two cuttings under low-desert conditions in Southern California and Arizona. In some areas, there is a mix of blue alfalfa aphid, pea aphid, and cowpea aphid
How to respond might depend upon where you are, in part due to environment, stage of growth, and role of natural enemies.
Recently, Bill Chounet from Stanislaus Farm Supply contacted us from Nevada, observing alfalfa fields with extensive aphid damage in the very early in...