Ontario Diagnostic Day 4: Avoiding herbicide injury and mounting a corn foliar disease defense

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It’s time for Day 4 of Ontario Diagnostic Days!

The annual Ontario crop diagnostic days were back in the field on July 20 and 21, 2022, but only at Ridgetown campus University of Guelph.

Not everyone could attend these two field days, so the organizing committees of these highly successful in-field education and learning events are again partnering with crop researchers and extension, along with support from RealAgriculture and a host of sponsors to bring you a hybrid version of the field days. In September, four virtual Ontario Diagnostic Days episodes will be published.

Diagnostic Days presenters will also guest on two live and interactive episodes of The Agronomists on Oct 17 and Oct 31. There will be plenty of crop diagnostic insights and opportunities for CEU credits in the weeks ahead. We’ll have info on CEU credits during each episode.

2022 Diagnostic Days was a transition back to in-field events, combining Southwest (Ridgetown), Elora and Eastern Ontario (Winchester) Crop Diagnostic Days into one hybrid provincial diagnostic day event. It featured eight 30-minute sessions relevant to farmers, crop consultants, and retailers. Four CEU credits will be available for those attending the in-person event as well as those who watch the sessions virtually.

This event and series is being brought to you by the partnership of the organizing committees and OSCIA, OMAFRA and University of Guelph/UGRC, along with sponsors: Grain Farmers of Ontario, Agris Co-operative, BASF, Bayer/Dekalb, Corteva/Pioneer, Great Lakes Grain, Maizex Seeds, The Mosaic Company, PRIDE Seeds, RealAgriculture, and Syngenta.

Episode four kick things off with OMAFRA plant pathologist Albert Tenuta. He offers tips on how to manage corn foliar leaf diseases. He shines the spotlight on northern corn leaf blight and shares how growers can combine genetics and fungicides to fight this disease. Next up is herbicide injury and crop sensitivity with OMAFRA weed specialist Mike Cowbrough. He shows how certain species of plants are more sensitive to herbicides and also demonstrates how environmental conditions can effect some herbicides, especially in a dry year.


Click here for more Ontario Diagnostic Days episodes.

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