ACID SULPHATE SOILS IN THE HUMID TROPICS: GUIDELINES FOR SOIL SURVEYS

Summary of the research, results and conclusions. 1. Introduction. 2. Identification of acid sulphate conditions. 2.1 General. 2.2 Laboratory identification. 2.3 Field identification. 2.4 Identification at landscapes genesis. 2.5 Other identification methods. 3. Survey strategies for acid sulphate soils. 3.1 General. 3.2 Models describing soil. 3.3 Survey and sampling methods. 3.4 Example strategies. 3.5 Results form Pulau Petak. 4. Transport, field equipment and sampling. 4.1 Transport. 4.2 Field equipment. 4.3 Sampling. 5. Laboratory management. 5.1 General. 5.2 Analyses for auger samples. 5.3 Analyses for soil pit samples. 5.4 Organizational aspects of a (field) laboratory. 6. Soil classification. 6.1 General. 6.2 Current classification systems. 6.3 Soil taxonomy critically reviewed. 6.4 Soil classification at the observation site. 6.5 Proposal for adjustment of soils Taxonomy. 7. Land evaluation. 7.1 General. 7.2 Major kinds of land use and land utilization types. 7.3 Land qualities and land characteristics. 7.4 Matching of land use requirements with land qualities. 7.5 Land improvements.

ENG

07702