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Manure sample question?
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AsianFarmer
Posted 1/10/2019 13:33 (#7235009 - in reply to #7234471)
Subject: RE: Manure sample question?


NC Iowa
I'd venture to guess about 30-50% available first year using the TKN number or total kjeldahl nitrogen number which is both organic and ammonium form N. The majority of your P & K should be available and we would always use the P205 and K20 numbers. N is just so variable though since it is manure and some in organic and some in ammonium form.
I've sold chicken litter for 4 years and we've always figured half N available at best. Obviously different source but similar in availability.
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