September 16 Quiz – Fall weed control

Weedy field pre-seed Nicole

Fall is an excellent time to control perennials and winter annuals, but a few key management steps can greatly improve the results. This quiz hits on a few highlights.

1. A fall glyphosate application is a very good way to control quackgrass. A light frost (-2°C or so) just before or application should not affect glyphosate performance on quackgrass as long as air temperatures return to ______ during the day.
2. What one statement below is the key to post-harvest weed control? (Three of them are not good advice.)
3. What is the best time of day to make a fall herbicide application?
4. This may seem counter-intuitive, but one of the best ways to manage volunteer canola in the fall is to _____________.