Manuals setting out the methods the Soil and Foliar Laboratory applies to each kind of sample. They describe the procedure for every test, so that results can be interpreted and reproduced.
These are long documents and some are fairly large; the size is shown for each one. They are published in Spanish.
Manuals by type of sample
Methods for Plant Tissue Analysis(2025) Manual of methods for plant tissue analysis, Soil and Foliar Laboratory. In Spanish.PDF · 861 KB
Methods for Soil Analysis(2025) Manual of methods for soil analysis, Soil and Foliar Laboratory. In Spanish.PDF · 5,2 MB
Methods for Water Analysis(2025) Manual of methods for the analysis of water and nutrient solutions, Soil and Foliar Laboratory. In Spanish.PDF · 10,1 MB
Methods for Analysis of Organic Fertilizers(2025) Manual of methods for the analysis of solid and liquid organic fertilizers, Soil and Foliar Laboratory. In Spanish.PDF · 7,5 MB
Methods for Fertilizer Analysis(2025) Manual of methods for the analysis of solid and liquid fertilizers and liming materials, Soil and Foliar Laboratory. In Spanish.PDF · 1,4 MB