Soybean planting in Michigan often begins after corn planting has finished. However, more recent data has shown an improvement in soybean yields with late April and early May plantings compared mid May and later. Based on previous studies done at B&M Crop Consulting in conjunction with MSPC in 2017 & 2018 early planting (late April or early May) resulted in an average of 4.1 Bu/ac yield increase. Farmers are now asking whether we should push planting dates even earlier in April and asking when is it too early to plant soybeans. If soybeans are planted into cold soils will adequate stands be obtained? There is little data available in Michigan to help answer these questions.

The objective is to determine if ultra early (prior to April 15th) planted soybeans in Michigan can maintain or increase yields compared to normal planting dates. It will be determined if testing for seed quality is helpful when planting ultra early. The ultra early planted treatments would be evaluated for timing of emergence, stand evaluations as a percentage of target, approximate R1 date, final node and pod counts, and final yield.

Many farmers are interested in planting soybeans earlier. However, little data and information are available on the potential success. This study may help soybean farmers to determine if earlier planting can improve or maintain yields and profitability while spreading out the work load. In addition to the Michigan Soybean Promotion Committee publishing the data results from this would be shared with Michigan soybean growers through B&M Crop Consulting meetings, Farm Journal Magazine, and other various speaking events.