Tar spot fungal disease spreads to Ontario, causing 3.9 million bushels of corn loss.

Tar spot, an airborne fungal disease threatening corn yields, was first identified in the U.S. corn belt and has spread to Canada since 2020. It thrives in moist conditions, needing seven hours of wetness on corn leaves to establish. In 2023, it caused Ontario farmers to lose approximately 3.9 million bushels of corn. The disease can travel long distances and spread via farm machinery, posing a significant challenge for local agriculture.

October 07, 2024
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