3-12 IAN Controlling Weeds

A computer program developed by University of Idaho weed scientists is designed to simplify herbicide selection and prevent development of herbicide resistant weeds and damage to future crops.?The team developed the program for Idaho's dryland farmers and working to expand the program's use to irrigated crop rotations. The program's available on a free trial basis to growers.

Tracking and adjusting herbicide use is essential to controlling resistance in weeds. Over 200 weeds worldwide now show resistance to commonly used herbicides. The main way to avoid resistance is to change herbicides based on their modes of action on weeds.?Growers can face substantial challenges in both trying to use herbicides from different groups to control common weeds and then keeping clear records through multiple seasons.?U of I weed scientist Don Thill says the herbicide management program can help accomplish both tasks: "A computer model that would keep track of your herbicide use based on the group number which helps manage from a herbicide resistant weed standpoint and also from the plant back restriction so you would know it's safe to plant certain crops in the crop rotation after you've used certain other herbicides previously in that crop rotation."