An example of phenoxy herbicide drift damage to grapes. Although much progress has been made in reducing vineyard injury from phenoxy, hormone-mimic herbicides, don’t expect the problem to drift away, says Dr. Vince Hebert, Washington State University associate Extension specialist. “You can expect some chronic level injury,” he said, referring to many areas within the state that continually seem to have drift issues. Hebert, who is the laboratory research director of WSU’s Food and Environmental Quality Lab at its Tri-Cities branch, is involved in a regional air-monitoring program focusing on off-target herbicide residues and their impact on grape production. Herbicide […]