Elsevier, Soil & Tillage Research, (127), p. 65-73
DOI: 10.1016/j.still.2012.03.003
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Visual soil evaluation methods can provide a quick and easy, semi-quantitative approach to assessing the overall soil structural condition of a block of soil in three dimensions. To express this amount of information through other measures of soil physical condition (e.g. penetration resistance, bulk density or shear strength) requires a number of measurements at various depths and can be costly and time consuming. There is therefore a need to develop simple field methods to assess and monitor soil quality.