Properties of Fine and Water-Soluble Fractions of Several Composts
Open Access
- 1 June 1985
- journal article
- research article
- Published by Taylor & Francis in Soil Science and Plant Nutrition
- Vol. 31 (2), 189-198
- https://doi.org/10.1080/00380768.1985.10557426
Abstract
Four composts, prepared from cow feces (A), city refuse (B), cow feces plus saw-dust (C), and swine feces plus saw-dust (D), were each separated into four fractions. These consisted of the coarse fraction, Fl (sedimented at 4°C), the fine fractions, F2 (sedimented by centrifugation at 10,000×g), and F3 (sedimented by centrifugation at l00,000×g), and the water-soluble fraction, F4 (supernatant of F3). Electronmicroscopic observation, elemental analysis, and incubation study for estimating the mineralizable organic nitrogen were carried out on each fraction. The results obtained are as follows:Keywords
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