This year soybean was planted late or replanted in many fields due to excess rainfall and late spring temperatures were colder than normal. Therefore, some producers wonder if foliar fertilization could help improve soybean growth and grain yield. The short answer is that it may, but probably not in fields that have been well fertilized or where growth is limited by factors other than nutrient supply. This short article reviews major issues involved, provides a brief summary of many studies conducted in Iowa during the last few years, and provides some recommendations.
Iowa State University
Mallarino, Antonio P., "What About Foliar Fertilization for Soybean This Year?" (2008). Integrated Crop Management News. 807.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.