The fertilizer value of agricultural manure: simple rapid methods of assessment
1991
Piccinini, S. | Bortone, G.
This paper presents the results of a series of analytical tests performed on pig and dairy cattle manure in order to establish the extent of the correlation between: dry matter (TS) and specific gravity (SG); TS and total Kjeldhal nitrogen (TKN) and total phosphorus (Pt); SG and TKN and Pt. In addition, two N-meters for field use were also used to estimate the ammonium (NH4-H) content. All the variables (TS, SG, TKN, Pt, NH4-N) show a high index of correlation for both the pig and dairy cattle slurry and the linear relations applied proved adequate in all cases. Though the precision of the equations is not very high, the estimate for TKN and Pt content, obtained from the relationship between the SG and these elements is nevertheless acceptable for practical farm use of animal manure.
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