Booker tropical soil manual: a handbook for soil survey and agricultural land evaluation in the tropics and subtropics
Booker Agriculture International Ltd., 1984 - Science - 450 pages
Aims and scope of the manual. Selection of contents. Layout of the manual. The need for soil surveys. Types of land resource field studies. Survey organization and practice. Clasification and mapping of soils. Land evaluation. Soil physics. Soil Chemistry. Soil and water salinity and sodicity. Soil and land suitability reports and maps. The purpose and use of soil and land suitability reports. Quality of soil and land suitability reports. Writing soil and land suitability reports. Soil and land suitability maps. Survei planning and logistics - tabulated data. Soil Physics. Soil classification. Selected land classification systems. Proposal preparation. Soil suitability guidelines for major tropical crops. Erosion and the universal soils loss equation. soil description and data presentationn tabulated weight and measures data remote sensing. Glossary of soil science and related terms. Climate classification. Tabulated geological and mineralogical data tabulated fertiliser data. Tillage implements.
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SURVEY 0RGANISATI0N AND PRACTICE
CLASSIFICATI0N AND MAPPING 0F S0ILS
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acid analysis and/or Annex areas auger-hole method available water capacity bulk density carbonate characteristics chernozems Class clay climate coarse colour crops deficiency depth detailed drainage drained effects erosion exchangeable FA0 Soil FA0-Unesco ferralsols fertiliser field Figure gypsum horizon hydraulic conductivity igneous rocks infiltration rate interpretation irrigation laboratory land evaluation land suitability layer levels limitations loam luvisols mapping units measurements minerals moisture content normally Note nutrient organic matter particles permeability phaeozems planosols plant podzols potential QJ QJ rainfall rock roots salinity samples sand sandy saturation slope sodium soil and land soil classification soil physical soil survey soil surveyors soil texture soluble subclasses Subsection summarised surface Table temperature tests texture USBR USDA Soil Taxonomy usually values vegetation vertisols yermosols yield