With seed companies preparing for an expansion in corn acres across the prairies, farmers considering growing Roundup Ready corn for the first time are wondering whether it fits in crop rotations that already include Roundup Ready canola.
The concern is the introduction of another glyphosate-tolerant crop could complicate management of volunteer forms of corn or canola in subsequent years.
Related: Glyphosate Resistance Management With Roundup Ready Crops in Rotation
As Bruce McKinnon, agronomist with Dekalb, explains in the video below, young corn plants will suffer if they have to compete with volunteer canola.
Using the right weed control products, he suggests it is possible to grow both Roundup Ready crops — ideally, with corn planted prior to canola in a rotation.
In addition to problems with weed control, following Roundup Ready canola can also create challenges with phosphate availability for corn, notes McKinnon.
He spoke with Shaun Haney as part of the Monsanto Momentum Tour stop in Carseland, Alberta: