Published October 2001. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published September 2002. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published June 2003. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A manual intended for use by those studying for the Oregon rights-of-way vegetation control exam. Includes chapters on basic weed science, vegetation management strategies; herbicides; factors influencing herbicide performance; special precautions when using herbicides; applying herbicides; calibration, mixing, and calculations; and application equipment. Includes a practice test, glossary, and references....
Wild carrot (Daucus carota), also known as Queen Anne’s lace, was introduced from Europe and is the genetic source of edible carrots. It is a problem in perennial cropping systems such as grass seed production, pasture and hay fields, and Christmas tree production. It is an especially serious threat where...
Jointed goatgrass (Aegilops cylindrica Host.) is a winter annual grass weed that was introduced into the United States in the late 1800s. It is
found throughout the continental United States and is most common in the winter wheat (Triticum aestivum L.) production areas of the Pacific Northwest and central Great...
Small broomrape (Orobanche minor Sm.) is a parasitic weed that recently has become troublesome in red clover seed production in Oregon. It was identified
in a single red clover seed production field in 1998, and the number of infestations increased to 15 by 2000 and 22 by 2001.
Recent concerns about surface water quality near agricultural production areas have stimulated interest in “best management practices” to reduce the risk of off-site sediment, pesticide, and nutrient movement. Vegetative filter
strips can be one component of an integrated management system to reduce these risks.
During the past several years, grape acreages have increased significantly in Washington and Oregon (17 percent and 23 percent, respectively, from 1999 to 2002). Unfortunately, herbicide drift can pose a major threat to the growth
and success of commercial grape production adjacent to areas of small grain, hay, grass seed,...
Pacific Northwest wheat growers soon will have an additional option for weed control, but the new tool differs greatly from those traditionally used in cereal production. Clearfield wheat has been selected that is tolerant to the herbicide imazamox. When integrated with traditional weed management tools, imazamox will control several weed...