Geographic information system (GIS) soil fertility database - part II, 2001
Mexico has a broad range of agricultural production systems, and the construction of a geographic information system (GIS) soil fertility database would aid in characterizing the current and potential status of these systems. This project initiated a large-scale sampling protocol that combined soil fertility data with georeferenced data for sites across Mexico for the eventual purposes of creating a detailed mapping and interpretation system, using GIS.
In 2001, over 5,000 sites were sampled in the States of Quintana Roo, Jalisco, San Luis Potosi, Veracruz, and Colima. Soil parameters were measured, including: pH, buffer pH, organic matter, phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), zinc (Zn), iron (Fe), manganese (Mn), copper (Cu), boron (B), sulfate-sulfur (SO42–-S), cation exchange capacity (CEC), nitrogen (N) mineralization, and percent base saturation. All parameters are contained within a database managed by INFOPOS, and the information is fully available to researchers, industry, and other interested parties. MEXICO-29A