BASF will offer Canadian corn farmers a new herbicide, Calovor, for the 2027 season, aimed at broadleaf weeds such as kochia, wild buckwheat, Canada thistle and redroot pigweed after the crop has emerged.
Calovor combines dicamba (Group 4) with diflufenzopyr (Group 19). Rob Miller, regional technical service manager with BASF, told Farms.com that the Group 19 ingredient acts as a transport agent, carrying dicamba to the weed's growing points, which he said gives more consistent control of larger broadleaf weeds.
Weed pressure is costly: research by Agriculture and Agri-Food Canada shows heavy densities of wild buckwheat can cut corn yields by 10 to 15%.
The product is rainfast after four hours and can be applied from the 2-leaf to the 8-leaf stage, giving growers a wide window. It carries a built-in safener, isoxadifen, which allows tank mixing with glyphosate and with products such as Armezon, Liberty 20 SN and Zidua SC.
In BASF's 2026 plots at Winkler, Manitoba, Calovor mixed with Armezon gave 92% control of kochia, 88% of redroot pigweed and 93% of lamb's quarters, according to the company's results.
BASF says the herbicide will be shown at grower and retail meetings in eastern and western Canada ahead of the 2027 season.
Photo: Matt Lavin / Wikimedia Commons (CC BY-SA 2.0)
Source: Farms.com
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