Alfalfa Report Yuma County, Arizona September 8, 2003 Yuma County Office Production Update: Berstreem clover: Berstreem clover (Trifolium alexandrinum
L.) ( Insect Management: Thrips do not normally cause economically important
damage to alfalfa. Several species of thrips may be found in alfalfa including:
Western flower thrips (picture),
Bean thrips (Caliothrips fasciatus), Onion thrips, Sixspotted thrips
( Weed Control: Established sandbur, both field (picture) and southern, cannot be selectively controlled in Alfalfa. A recently completed test contained all of the postemergence grass herbicides including Poast, Select, Raptor, Fusilade, Assure and Pursuit. None of these treatments were effective. Poast, Select and Raptor have sandbur on the label but these may be effective on only seedling sandbur at the earliest growth stages and not on plants that already contain burs.
10 Year Summary (Aug. 26 - Sept 8, 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. The University of Arizona is an equal opportunity, affirmative action institution. The University does not discriminate on the basis of race, color, religion, sex, national origin, age, disability, veteran status, or sexual orientation in its programs and activities. Any products, services, or organizations that are
mentioned, shown, or indirectly implied in this web document do not imply
endorsement by The University of Arizona. Information provided by: Barry Tickes, btickes@ag.arizona.edu Extension Agent, Yuma County Michael Ottman, mottman@ag.arizona.edu Agronomy Specialist College of Agriculture, The University of Arizona. Eric Natwick, etnatwick@ucdavis.edu UCCE Imperial County - Farm Advisor University of California, Davis, CA. | ||||||||||||||||
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