Projects evaluated the potential of controlling hairy nightshade with tankmixes of ethofumesate and s-metolachlor and determined table beet tolerance to s-metolachlor in a commercial production system. Hairy nightshade control with Dual Magnum improved nearly linearly as the rate of Dual Magnum increased. Hairy nightshade control improved significantly when Dual Magnum...
The objective of the study was to compare crop tolerance of carrots and parsnips to two soil and early postemergent herbicides. Dual Magnum (s-metolachlor) was recently registered for use on root crops, but provides poor control of hairy nightshade, and looses effectiveness if rainfall is excessive after application.
Weed management in table beets has improved with the recent registration of Dual Magnum. Hairy nightshade control continues to be a challenge, however. Nortron (ethofumesate) herbicide is now labeled for use and will help with nightshade control, but there is very little experience in the PNW on the best use...