Published on Thu, 09/24/2015 by BASF Canada

More glyphosate-tolerant crops create need for alternative canola system

Growers tightening their canola, soybean and corn rotations may face more weed control challenges, especially if their rotation includes two glyphosate-tolerant crops.

This could be the case for many Manitoba growers who are including glyphosate-tolerant canola, corn and soybeans into their rotation. The province has seen significant growth in the number of soybean acres over recent years and, with a large number of growers already growing canola, the possibility for growers to have both included in a rotation is common.

More glyphosate-tolerant crops going in the ground mean more difficulty controlling glyphosate-tolerant canola volunteers. With more glyphosate being used and with resistance increasing, growers now more than ever need to use best practices to manage resistance and rotate their herbicide chemistries.

Introducing a new canola system can help manage the problem.

Warren McCutcheon, a grower from Carman, Manitoba, grows 3,000 acres of grains, oil seeds and speciality crops and has seen an advantage on his farm since introducing Clearfield canola.

“We needed something else for our rotation and Clearfield canola is a good fit for our farm,” said McCutcheon. “We grow a lot of Roundup Ready soybeans and corn and have had a problem with volunteers. Having a different chemistry on our farm really helps control those volunteers.”

The practice of tightening canola rotations and seeding multiple crops from the same system can make weeds tougher to control and increase the risk of developing resistance.

“A good way of controlling volunteers and introducing a new chemistry to your farm is to through a new canola system,” said Danielle Eastman, Western Herbicide Brand Manager at BASF Canada. “The Clearfield Production System for canola combined with Ares herbicide introduces a new mode of action and helps control volunteer canola as well as flushing broadleaf weeds like cleavers, wild buckwheat and lamb’s-quarters.”

Ares herbicide also provides enough residual activity for control of tough, small, shallow-germinating weeds.

Combining proper crop, chemistry and system rotation will help growers manage weeds and risk for the long run. Growers considering tightening their rotations should carefully consider all factors in their crop planning.

© 2015 BASF Canada Inc.