“Rain makes grain,” but too much rain at the wrong time is hurting corn yields this year. According to agronomist Ken Ferrie, some fields are seeing 15–40 bushel-per-acre losses due to poor pollination. The cause? Consecutive days of heavy rain and fog in key regions like central Illinois. These conditions prevented pollen sacks from opening properly, disrupting pollination. Unlike tassel wrap issues, this is weather-related, not genetic.
https://www.agweb.com/news/crops/corn/recent-rains-spell-trouble-corn-what-farmers-need-know-now