oa Agrochemophysica - Soil textural properties influencing compactibilty

Volume 13, Issue 2
  • ISSN : 0302-7112



Two linear regression equations were developed to predict compactibility as a function of soil texture. One equation had distribution parameters such as mean particle size and kurtosis as independent variables. It was established that the grading of soils, as quantified by the coefficient of kurtosis, is the most important size distribution parameter influencing soil compactibility. The moment coefficient of kurtosis was able to explain 82% o f the variation in the maximum bulk densities. The other equation, utilising five particle size fractions as independent variables, was able to explain 86% of the variation in maximum bulk density. Four compactibility classes are presented for the evaluation of the predicted maximum bulk densities.

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