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Stripe Rust Mutation Could Spell Trouble For Ontario Wheat

Crop scientists in Ontario are concerned about a potentially devastating mutation in a fungus that affects wheat.
 
Agronomist Peter Johnson says Stripe Rust can destroy a crop in just a few days, but it was never a serious problem for Ontario farmers because it usually is warmer here than the fungus can tolerate.
 
“Normally we don’t see a lot of stripe rust, in my career this is a first,” he says. “It may not be the last because we are pretty sure the fungus has mutated and we now have a more heat tolerant Stripe Rust.”
 
Johnson says the fungus is carried by the wind from the United States but in the past it stopped being a threat in temperatures about 21 C.
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Spring weed control in winter wheat with Broadway® Star (pyroxsulam + florasulam)

Video: Spring weed control in winter wheat with Broadway® Star (pyroxsulam + florasulam)

#CortevaTalks brings you a short update with Cereal Herbicides Category Manager, Alister McRobbie, on how to get the most out of Broadway® Star.

Significant populations of grassweeds, including ryegrass and brome, can threaten winter wheat yields. Spring applications of a contact graminicide, such as Broadway Star from Corteva Agriscience, can clear problem weeds, allowing crops to grow away in the spring.

Broadway Star (pyroxsulam + florasulam) controls ryegrass, sterile brome, wild oats and a range of broad-leaved weeds such as cleavers. It can be applied to winter wheat up until GS32, but the earlier the application is made, the smaller the weed, and the greater the benefit to the crop. Weeds should be actively growing. A good rule of thumb is that if your grass needs cutting, conditions are right to apply Broadway Star.