Soil temperatures at 2 inches are now approaching the critical 50°F threshold across Minnesota, but conditions remain highly variable depending on location. 

In southern Minnesota, counties such as Olmsted, Fillmore, Mower, Waseca, Rock and Nobles are now reaching or slightly exceeding 50°F. In central Minnesota, including Lac qui Parle and Kandiyohi, soil temperatures are close, with daytime warming but cooling overnight. Farther north, in counties such as Marshall, Pennington, Polk and Norman, soil temperatures remain below 50°F and will take longer. 

This threshold matters. 

Soybeans planted into soils below 50°F will emerge slowly and unevenly, increasing exposure to early-season diseases such as Phytophthora sojae and sudden death syndrome. At the same time, delaying planting reduces yield potential, with losses increasing as we move into late May and June. 

This creates a narrow decision window. Plant too early and risk stand establishment. Plant too late and give up yield. 

Weather conditions over the next two weeks will play a key role. NOAA forecasts (https://www.cpc.ncep.noaa.gov/) indicate above-average temperatures next week, which should help increase soil temperatures, especially in southern Minnesota. However, the outlook from April 25 to May 8 suggests cooler temperatures combined with above-average rainfall, which could slow soil warming and delay field operations. 

Based on current conditions, southern Minnesota may approach suitable planting conditions shortly after April 20. Central and northern regions are not there yet and will need to wait for soils to consistently reach target temperatures. 

The decision should not be based on the calendar. It should be based on field conditions. 

Monitoring soil temperature in real time is critical. Tools such as NDAWN (https://ndawn.info/soil.html) and the Minnesota Department of Agriculture Soil Temperature Network provide valuable data across the state, but the most reliable method remains measuring soil temperature directly in your field at planting depth, early in the morning. 

The goal is not to plant first. The goal is to plant under the right conditions to ensure rapid emergence, uniform stands and maximum yield potential. If you have a question, do not hesitate to contact me at scabelloleiva@agmgmtsolutions.com.