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The effect of moisture on the decomposition rate of cattle manure

H. K. MURWIRA, H. KIRCHMANN and M. J. SWIFT
Plant and Soil
Vol. 122, No. 2 (March 1990), pp. 197-199
Published by: Springer
Stable URL: http://www.jstor.org/stable/42938410
Page Count: 3
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The effect of moisture on the decomposition rate of cattle manure
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Abstract

In an incubation study the effect of moisture content on CO₂-C production from manure at 25°C was determined. Different non-linear regression models were applied to describe cumulative CO₂-C evolution and a simple first-order model gave the best curve fit. Derived data from the curve fitting procedure were plotted against moisture content. A linear relationship between moisture content and microbial activity up to 50% of the water-holding capacity was followed by a curvilinear response between 50% of WHC and saturation. Equations describing the effect of moisture on dry matter decomposition are given.

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