15 Ate Today? Thank a Farmer. Better Farming | June/July 2024 “The issue with this fungal pathogen is that it has the ability to produce multiple cycles – we would call it polycyclic – which means that it produces multiple generations of spores that can affect the developing corn crop,” says Tenuta. “It’s not like a one-off disease that produces one spore and then is done.” Tenuta explains that the spores overwinter on corn residue and the leaves that are left in the field. This means that once spores are present in a corn crop, tar spot can continue to reappear year-after-year. Spore movement and the ability to overwinter emphasize the importance of knowing the status of tar spot in Ontario and across the border. Grain farmers should regularly monitor their own crops. What to look for Producers across Southwestern Ontario should make a habit of checking their corn crops for tar spot. It is valuable to A POWERFUL ADDITION TO OUR REVYSOL® FUNGICIDE. THE REVYLUTION JUST GOT STRONGER. Visit agsolutions.ca/VeltymaDLX to learn more. MAG Always read and follow label directions. AgSolutions, REVYSOL and VELTYMA are registered trademarks of BASF; all used under license by BASF Canada Inc. VELTYMA DLX fungicide should be used in a preventative disease control program. © 2024 BASF Canada Inc. 3205_VeltymaDLX_CORN_Print Ad_BFE_HalfPg-Hor_v2.indd 1 2024-03-28 11:08 AM Tar Spot Albert Tenuta photos Two tolerant tar spot hybrids – one treated with fungicide (right) and one without.
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