By Scout Nelson
Recent rains have slowed fieldwork across Minnesota, but corn and soybean planting remain ahead of average. As of May 19, 2025, 92% of corn and 81% of soybeans are planted—both about 10 days earlier than the five-year average.
Warm May temperatures have helped seeds emerge quickly, in as little as six days. However, early planted corn in cold, wet soils experienced stand issues, requiring replanting in some fields. Farmers resumed planting around May 5, working quickly with tillage, fertilizer, and herbicide applications.
Proper stand assessment is essential. Uneven spacing has minimal yield impact unless large gaps occur. Gaps of 16–33 inches can reduce yield by 2%, while 4–6-foot gaps may reduce it by 5%. Corn stands below 20,000 plants per acre may warrant replanting.
When replanting, adjusting corn hybrid maturity is key. Replanting between May 22–28 calls for hybrids 5–7 maturity units earlier; between May 29–June 4, 8–15 units earlier; and after June 5, more than 15 units earlier.
Soybean planting shows similar progress, with hot weather accelerating development. Quick emergence is critical, as seeds lingering in soil are more vulnerable to diseases like sudden death syndrome.
High winds and dry conditions have caused sandblasting damage. Corn plants are resilient before five-leaf collar stages. Soybeans, with above-ground growing points, should be replanted if green tissue is absent. Stands below 80,000–100,000 plants per acre may reduce yields.
To prevent future sandblasting, reduce fall tillage, preserve soil residue, and avoid over-pulverizing dry soil. Wind erosion not only harms plants but can also remove fertilizers and herbicides.
Photo Credit:gettyimages-studio2013
Categories: Minnesota, Crops, Corn, Soybeans, Weather