oa Agrochemophysica - Influence of particle size distribution on soil compactibility

Volume 1, Issue 3-4
  • ISSN : 0302-7112



It was established that of the many factors that may influence soil compactibility particle size distribution is the most important for a group of soils studied. Soils very high in silt, clay and organic matter were excluded, hence the results obtained are of limited applicability. The quantitative effect of the proportions of various, particle size classes on soil compactibility was investigated. It was found that only very coarse sand (2 to 1 mm) and silt + clay (<0.02 mm) were required to obtain a highly significant regression equation for the maximum bulk density attainable under specified experimental conditions. The limitations of such equations are recognized. A diagram for the evaluation of soil compactibility, based only on particle size analysis data, is presented.

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