Presidedress soil nitrate test

Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.

The presidedress soil nitrate test (PSNT) provides information about the mount of nitrogen available in the soil. Guidelines for N credits associated with the PSNT in Michigan are based in soil samples taken to 12 inches deep. Since nitrogen release (mineralization) from soil organic matter and plant residues in on ongoing process, collecting PSNT soil sample as close to sidedress time as possible gives the best information about the appropriate N credit. However, a 7 to 10 day lead time is necessary to get the samples to the soil testing lab and get the results back and make the decision about how much N to apply.

The fee for the PSNT test is $9.00 per sample through the MSU Soil & Plant Nutrient Lab (582 PSSB, Michigan State University, East Lansing, MI48824-1325, ph 517-355-0218). Results are usually available within 48 hours of receiving the sample. Results will be faxed or emailed (fee of $1.00 per fax or email) if that information is provided.

Related Events

Related Articles

Related Resources