Nutrient availability is highest when fertilizer is applied just prior to soybean needs. However, particularly under double crop system, fertilizer is usually applied before wheat for both crops. A good wheat crop can take up more nutrients than expected, often leaving soybeans short of nutrients and limiting soybean yields. Wheat and soybeans have different nutrient requirements and grow under different soil conditions, and fertilization of each crop separately may be beneficial and increase yields. Soil fertility research on double crop soybean after wheat is limited, and most studies focus on regular full season soybean. Producers question about possible differences in nutrient requirements,...
The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.