Evaluation of Soil Health Test to Determine Fertilizer Needs for Soybean in Kansas
Sustainable Production
GeneticsGenomicsSeed quality
Lead Principal Investigator:
Dorivar Ruiz-Diaz, Kansas State University
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
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Brief Project Summary:

Chemical soil heath indicators are currently used to provide fertilizer recommendations to producers. In addition, soil health tests include physical and biological assessments that can help improve overall recommendations. Project objectives include evaluating commercially available soil health tests for fertilizer management in soybean under Kansas soils and production practices; and compare to traditional soil test methods; determining the effect of long-term management practices, such as tillage systems, cover crops, and rotations, on fertilizer requirements for optimum soybean yields; developing soil test interpretations for recently proposed soil health chemical indicators, and evaluate the effect of physical and biological factors on nutrient availability and plant uptake.

Key Benefactors:
farmers, agronomists, extension specialists, ag retailers

Information And Results
Final Project Results

Field research work was completed and final data analysis and summary is ongoing. Results showed good correlation of newly proposed soil health chemical tests with traditional chemical test. This suggest that the new methods might be used for basic P and K testing. However, there is no indication that the new chemical tests can provide improved prediction of soil nutrient status and prediction of plant response to fertilizer application.

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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.