UC researchers evaluating genetically engineered alfalfa

UC Cooperative Extension farm (UCCE) advisors and researchers are growing genetically engineered (GE) alfalfa in small experimental plots to determine whether the technology will be beneficial to California farmers. “We would like to be ready with research-based answers when this technology is introduced,” says Steve Orloff, Siskiyou County farm advisor. “It’s somewhat controversial, but providing unbiased research results will enable growers to make intelligent decisions about it for themselves.” Although final results are not yet in, the UC scientists believe that the new varieties, which have been genetically engineered for resistance to the herbicide glyphosate (Roundup), could be an important new tool for alfalfa growers. “It won’t be a silver bullet for all farmers,” says Kurt Hembree, Fresno County weed science advisor. “Glyphosate is weak on some important alfalfa weeds, like malva, nettle, hairy fleabane and filaree. Successful weed control with this technology will depend a great deal on the ability of the growers and pest control advisers to accurately identify their specific weed problems before treating.” Alfalfa is grown on more acres in California than any other crop and is the third most valuable crop in the United States. But because it is used primarily for dairy feed and is a few steps removed from the dinner plate, the general public does not often recognize its importance.” Alfalfa is ice cream in the making,” quips UC Davis alfalfa specialist Dan Putnam. In anticipation of a possible 2005 commercial release of gyphosate-resistant (Roundup Ready) alfalfa, UCCE farm advisors and specialists are evaluating it in the Intermountain Region and throughout the Central Valley. “We rate the trials blind,” Orloff says. “We don’t favor one approach over others.”