Michael Rethwisch
The author is an extension farm advisor with the University of California based in Blythe.
1904_HFG-20-blue-alfalfa-aphid
Blue alfalfa aphid poses problems and questions
Alfalfa
May 21 2019 The blue alfalfa aphid is again present in many southwestern U.S. alfalfa fields. Growers and pest control advisers were hoping that 2019 would be a break from the annual battles they have been fighting