After a methodical march north from the Corn Belt, tar spot has now gained a foothold in Ontario. Last year, the yield-robbing leaf disease was confirmed in five counties in the southwestern, stretching from Essex to Simcoe. Characterized by tar-like speckling on the upper surface of corn leaves, the fungal pathogen has been delivering yield… Read More

It’s time for the season finale of Ontario Diagnostic Days! The annual Ontario field crop diagnostic days held at Ridgetown, Elora, and Winchester are again virtual in 2021. On this live broadcast, University of Guelph professors Dave Hooker and Francois Tardif join host Shaun Haney to talk three hot topics that are sure to grab growers’… Read More

Tar spot is taking a bite out of yields in some Ontario corn fields but there is hope that growers will have effective tools to manage the leaf disease. Characterized by tar-like speckling on the upper surface of corn leaves, the fungal pathogen has been delivering yield hits ranging from 20 to 60 bushels per… Read More

It’s time for Day 7 of Ontario Diagnostic Days! The annual Ontario field crop diagnostic days held at Ridgetown, Elora, and Winchester are again virtual in 2021. Wheat and soybean fungicide tips, tar spot control in corn, manganese deficiency, plant growth regulators and double crop soybeans are all featured in this episode. We’ll kick it off with Ontario… Read More

Tar spot has moved through the U.S. Midwest, into Michigan and Wisconsin, and now officially calls Ontario home. Ontario Ministry of Agriculture, Food and Rural Affairs’ plant pathologist Albert Tenuta has seen the evidence in a field near Ridgetown, Ont., and there are also reported sightings of the corn leaf disease in Lambton and Essex… Read More

Eagle-eyed agronomists and researchers in Ontario’s southern corn growing region have identified what they believe is tar spot, a disease that can reduce corn yields by 40 bushels an acre. The fungal disease has been steadily moving north out of the U.S., and researchers here have been anticipating the find for some time. Ontario Ministry… Read More

 

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