Farms.com Home   News

Stop the spread of Kochia

Kochia that survived pre-seed burnoff needs to be taken out before it drops seed later in the season. The big weeds can produce at least 15,000 seeds per plant – often many more – so letting them set seed and then spreading that seed with the combine can move a herbicide-resistant population across a field very quickly.

Kochia with resistance to both Group 2 and Group 9 herbicides is found all across the Prairies in big numbers. Agriculture and Agri-Food Canada weed scientists have also confirmed kochia populations with resistance to Group 4 and Group 14 herbicides.

The best practice is to control small kochia plants in the pre-seed window with a tank mix of effective herbicides. If kochia is still alive after crop emergence, growers have fewer options in canola fields.

The only in-crop herbicide option that works on Group-2 and Group-9 resistant kochia is an early application of Liberty on Liberty Link canola cultivars. Group-10 glufosinate in Liberty will control all resistant kochia populations as long as plants are not too large to kill at the time of spraying.

Click here to see more...

Trending Video

Market Journal - May 10, 2024

Video: Market Journal - May 10, 2024

In the Field Update: Recent precipitation has been welcome.