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Ontario Corn, Soy Crops Still Facing Production Risks

Ontario corn and soybean crops have shown major improvement with better rainfall and cooler temperatures over the past several weeks, but production risks remain. 

Big corn plants and lush soybean fields give the appearance of strong yield potential that may not actually translate at harvest, Real Agriculture agronomist Peter Johnson said Wednesday. 

“Rain in August makes soybeans, and we are getting rain, so the crop should be excellent,” he said. “But many growers would think, ‘record crop,’ and for some reason it doesn’t always turn out that way with extremely lush soybeans.” 

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LALEXPERT: Sclerotinia cycle and prophylactic methods

Video: LALEXPERT: Sclerotinia cycle and prophylactic methods

White rot, also known as sclerotinia, is a common agricultural fungal disease caused by various virulent species of Sclerotinia. It initially affects the root system (mycelium) before spreading to the aerial parts through the dissemination of spores.

Sclerotinia is undoubtedly a disease of major economic importance, and very damaging in the event of a heavy attack.

All these attacks come from the primary inoculum stored in the soil: sclerotia. These forms of resistance can survive in the soil for over 10 years, maintaining constant contamination of susceptible host crops, causing symptoms on the crop and replenishing the soil inoculum with new sclerotia.