The theory behind the pre-sidedress soil nitrate test methodology is still sound, but changes in production practices, such as the shift to no-till, require some adaptations to the original PSNT methodology and calibration.
Manured fields are good candidates for the pre-sidedress soil nitrate test, but nitrogen credit following legume crops is unpredictable and will likely depend on the stand density and timely termination.
When done correctly, the PSNT is an excellent tool to determine available nitrate-N from organic matter mineralization, says Michigan State University Extension.
Research has shown that both the Pre-Sidedress Soil Nitrate Test and Chlorophyll Meter Test, if used correctly, can significantly improve nitrogen management.
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On this episode of Conservation Ag Update, brought to you by Titan International, a big piece of equipment is unveiled at the Kinze Product Innovation Day in Williamsburg, Iowa.
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