An electronic version of this worksheet can be found in the OMAFRA NMAN software or as a spreadsheet atMost of the available nitrogen in manure is used by the crop or is lost during the first growing season following application. The remaining organic nitrogen becomes available in small, diminishing quantities in the succeeding years. Generally, the amount of residual nitrogen from one application of liquid manure is too small to make a practical difference in nitrogen recommendations for a crop. However, where solid manure is applied regularly to the same field, there can be significant residual nitrogen available for a crop. Use regular soil testing for P and K to measure residual levels of these nutrients from manure applications.
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