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Farms.com’s Top 10 Ontario Stories of 2025


10) Pollination and tar spot issues challenging 2025 corn yields

Corn plant

In July, the Ag Commodity Corner+ Podcast highlighted challenges facing Ontario crops.

The major concern the week from July 21 to 25 was a widespread corn pollination problem across 13 US states and parts of Ontario.

Farms.com Chief Commodity Strategist Moe Agostino described it as a rare “tight tassel wrap” issue—also referred to as rapid growth syndrome—where the corn tassel fails to emerge properly, reducing pollination and resulting in lost yields. 

This problem appeared hybrid-specific and could have worsened with continued spread into new regions.
 

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