Soil+Testing

What is soil tested for? What is the significance of the tests?

This chapter provides an overview of the soil tests that have been used to measure available P from soils treated with PR and water-soluble P fertilizer. It provides an introduction to the nature of the reactions of PR and water-soluble P fertilizer in soils http://www.fao.org/docrep/007/y5053e/y5053e0b.htm