By Scout Nelson
The latest Strategic Farming: Field Notes for 2026 webinar focused on corn reproduction and nitrogen management as Minnesota growers deal with hot temperatures and uneven rainfall. Extension specialists reviewed current crop conditions and key factors that could influence yield potential during the critical pollination period.
Corn development has advanced quickly this season, with many fields reaching tasseling earlier than usual. While adequate moisture has limited stress in many areas, some regions are beginning to experience drier conditions as rainfall becomes less frequent.
Experts noted that prolonged heat and dry weather during pollination can reduce yield potential. Growers in drought-stricken areas of southwest Minnesota may face a higher risk of crop stress, making moisture management especially important.
Farmers were encouraged to monitor pollination progress by evaluating silk development and ear formation. The first two weeks after silking are considered a critical period for yield determination, and moisture shortages during this stage could lead to kernel abortion.
Nitrogen availability was another key topic during the webinar. Although rainfall has varied widely across the state, specialists indicated that most fields are unlikely to require supplemental nitrogen applications after tasseling.
The session also addressed weed and disease concerns. Waterhemp continues to challenge growers due to herbicide resistance and uneven emergence, while disease pressure remains relatively low, with only limited reports of tar spot and northern corn leaf blight.
Extension experts advised growers to continue scouting fields and monitoring crop conditions. Careful management of moisture, nutrients and field health will be important as the growing season progresses toward grain fill and harvest.
Photo Credit: gettyimages-awakr
Categories: Minnesota, Crops, Corn, Weather