Agricultural Management Practices And Soil Quality: Measuring, Assessing, and Comparing Laboratory and Field Test Indicators of Soil Quality Attribute

This publication describes: (1) some indicators of soil that can be measured with a simple test kit developed by the United States Department of Agriculture, Natural Resource Conservation Service (USDA-NRCS); (2) directions for interpreting these measurements; (3) the effects of soil amendments on soil quality attributes; and (4) comparisons of field kit and laboratory results.

The link address is: http://www.ext.vt.edu/pubs/compost/452-400/452-400.html