New Glenn CWRS Wheat Rated “Fair” For FHB Tolerance

“We think best management practices still need to apply (with Glenn) and that may include using a fungicide at relevant times. By no means do we think the farmer can walk away from the agronomics and think that the product is going to look after itself.”


Glenn, a newly registered Canada Western Red Spring wheat expected to surpass AC Barrie in popularity, has many strengths, including a “Fair” rating for tolerance to fusarium head blight (FHB).

But “Fair” doesn’t mean the variety is totally resistant to FHB, said Pam de Rocquigny, Manitoba Agriculture, Food and Rural Initiatives.

Richard Kieper, CEO of Canterra Seeds, which has the Canadian rights to Glenn, a cultivar developed at North Dakota State University (NDSU), agrees. Farmers should still consider applying a fungicide if conditions are right for the fungus disease, he said last week in an interview.

“We’re definitely saying this is a tool in managing fusarium,” Kieper said. “We think best management practices still need to apply and that may include using a fungicide at relevant times. By no means do we think the farmer can walk away from the agronomics and think that the product is going to look after itself.”

The five point scale used to measure disease resistance in wheats listed in Seed Manitoba from best to worst is as follows: Very Good, Good, Fair, Poor and Very Poor.

A “Very Good” rating would mean the variety is totally resistant, and de Rocquigny. No wheats grown in Manitoba have that rating for FHB. Only two – 5602HR and Waskada – are rated “Good.”

Although Glenn, which was officially registered by the Canadian Food Inspection Agency March 27, has the same FHB rating as AC Barrie, Kieper is optimistic it could perform better under field conditions. While stressing he’s not a plant pathologist, Kieper said there is anecdotal and scientific evidence from North Dakota suggesting it might.

“The rating (to FHB) is moderately resistant to resistant in the U. S.,” he said. “I think we’ll find when producers produce it here they’re going to be pleased with the fusarium and DON reactions.”

Data contained in the registration paper filed by North Dakota State University on Glenn states it was less infected by FHB than other moderately resistant varieties. Glenn also had less of the mycotoxin DON (deoxynivalenol) than most other varieties.

The disease assessment subcommittee of the Prairie Recommending Committee for Wheat, Rye & Triticale, which rated Glenn as “Fair” for FHB tolerance, found the same thing.

But even if Glenn’s tolerance to FHB is no better than AC Barrie’s, Kieper said Glenn is still a better variety because it’s resistant to leaf rust, which AC Barrie isn’t. Glenn is also resistant to stem rust, has higher yield potential, higher test weight and is shorter strawed.

“This is a very solid variety,” Kieper said. “We’re very excited. We think this variety is going to have a nice fit with a lot of growers.”

During three years of co-op testing in Western Canada Glenn yielded almost as much as the top-yielding check variety Unity. However, Glenn out yielded the average of all the checks by eight per cent in Manitoba and six per cent in Saskatchewan.

According to an NDSU report, Glenn yields averaged 73 and 45.3 bushels an acre last year in eastern and western North Dakota. Protein averaged 15.9 per cent.

Canterra Seeds has exclusive rights to Glenn in Canada. That means Canadian farmers can only legally purchase Glenn seed from Canterra Seeds. American seed growers are not allowed to sell Glenn to Canadian farmers, Kieper said.

Manitoba farmers who wish to purchase Glenn seed for

planting this spring should be able to so long as they don’t wait too long to place their order, Kieper said.

“Glenn wasn’t registered until last Friday (March 27) so we couldn’t move seed until then,” he said. “We’re well underway with moving seed in for the orders we have now. The logistics might get more challenging later on.” [email protected]

About the author


Allan Dawson

Allan Dawson is a reporter with the Manitoba Co-operator based near Miami, Man. Covering agriculture since 1980, Dawson has spent most of his career with the Co-operator except for several years with Farmers’ Independent Weekly and before that a Morden-Winkler area radio station.



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