Yuma County, Arizona
June 16, 2003
Yuma County Office
Insect Management: Grasshoppers are normally of little concern in desert alfalfa. Damage is usually limited to a few weeks of infestation after weeds dry up in the foothills or deserts. Grasshopper migrations to irrigated crops usually occurs when the natural vegetation begins to dry in late spring or early summer. Monitor known grasshopper overwintering areas for potential problems. Eliminate weedy habitats by tillage of herbicides along field margins, roadsides, and along fence rows. Control can sometimes be achieved by spraying an insecticide around fields closest to the source of migration or by broadcasting insecticide bait over a vegetation free, 60-foot buffer strip, in advance of the migrating grasshoppers.
Weed Control: Alfalfa goes into a "summer slump" in late July
and August and weeds like nutsedge and bermudagrass can take over at this
time. Repeated applications of Eptam can supress these weeds if it is
started now and continued into October.
10 Year Summary (June 3 - June 16, 1994-2003):
Issued in furtherance of Cooperative Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, James A. Christenson, Director Cooperative Extension, College of Agriculture and Life Sciences, The University of Arizona.
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Information provided by:
Barry Tickes, firstname.lastname@example.org Extension Agent, Yuma County
Michael Ottman, email@example.com Agronomy Specialist
College of Agriculture, The University of Arizona.
Eric Natwick, firstname.lastname@example.org UCCE Imperial County - Farm Advisor
University of California, Davis, CA.
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