The Handbook 60 Keyword Index allows the reader to quickly view the contents of this historic document, prior to downloading a PDF file. Note that many of the techniques mentioned are obsolete and have been replaced by modern methodologies Chapter 1. Origin and nature of saline and alkali soils. Sources of soluble salts Salinization of soils. Soluble cations and anions Soluble boron .
Saline soils Nonsaline-alkali soils.
Sequence of determinations for soil diagnosis Chapter 3. Basic principles Irrigation and leaching in relation io salinity control. Drainage requirements Water-transmission properties of soils. Boundary conditions Layout and placement of drains Techniques for drainage investigations Measurements of hydraulic head . Determination of subsoil stratigraphy Determination of water-transmitting properties of soils Chemical amendments for replacement of exchange able sodium Suitability of various amendments under different soil conditions Chemical reactions of various amendments in alkali soils Class 1.