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Princeton, Indiana | All of the ammonium portion would be considered first year available and about 25-30% of the organic nitrogen would be first year available.
https://cdn.shopify.com/s/files/1/0979/5626/files/FS31_-_Manure_Anal...
See the section titled "Availability of organic nitrogen" on page 4 and also table 3 on page 6.
"Availability of Organic Nitrogen - Not all of the nitrogen in a manure application is available for crop uptake in the first year. The report of analysis lists a result for Total Nitrogen, which represents the Organic Nitrogen plus the Ammonium Nitrogen. The First Year Available Nitrogen is also reported. This value is calculated by multiplying the Organic-N by the corresponding organic nitrogen availability factor (Table 3) and adding the NH4-N to that result. The NH4-N value is obtained from a reference source when the analysis is not requested. When NH4-N is requested, values for Total N, Organic N and NH4-N are reported, as well as First Year Available Nitrogen."
Edited by tumbleweed 11/18/2017 09:44
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Liquid manure. N available 1st yr.
