CLUBROOT: Farmers betting on resistant varieties as infestation spreads

CLUBROOT: Farmers betting on resistant varieties as infestation spreads

Experts tell farmers with infected fields to thoroughly clean equipment before moving to 
a new field, but many question whether the time-consuming chore is worth it

Farmers in the epicentre of Western Canada’s clubroot infestation are easing back on containment efforts and betting resistant varieties will save the day — even as leading researchers are warning it could be a losing wager. Since first being discovered in an Alberta field in 2003, the soil-borne disease has spread to more than 1,000


One tool for a complex problem

History is full of examples of heated, ideological and rhetorical public debates that somehow miss the point. The controversy over genetically modified crops is such a case. The debate has generally fallen into two camps — the “Frankenfood” phenomenon, the question of whether we should be meddling with nature’s processes for genetic evolution and “feeding






Manitoba Crop Report

The weekly crop report by Manitoba Agriculture Food and Rural Initiatives for July 2, 2013

Weekly Provincial Summary The warm and dry weather conditions are welcomed by many Manitoba producers. All crop types, particularly the warm season crops including grain corn and soybeans, are benefiting from the warmer weather. The favourable weather conditions are also allowing some acres impacted by excess moisture to recover. However, there are portions of fields




Wait until the first trifoliate to roll your soybeans, says MAFRI’s Dennis Lange. Rolling at this stage will ensure the field is past the hook stage where most of the damage to the plants will occur. If you roll when the plants are just at the unifoliate stage there is a greater chance of some soybeans being at the hook stage. The centre plant in this photo is in the first trifoliate stage, with three leaflets in the middle, two first true leaves lower on the stem and the cotyledons below that.  
photos: Dennis Lange, MAFRI

Trifoliate stage best for rolling soybeans after emergence

Don’t roll soybeans until they reach the first trifoliate stage, advises Dennis Lange, or you risk breaking too many young plants. “You don’t want any beans at the hook stage,” said the Altona-based farm production adviser with Manitoba Agriculture Food and Rural Initiatives. “Only roll if you have some stones or dirt that will cause