Table 1.

Physicochemical properties of soils used in this study to grow maize

Test description
Active lime	3.70%
Carbonates	13.6%
Classification	Type clay loam
Assimilable phosphorus	11 ppm
Humic matter	0.79%
Total nitrogen	0.072%
pH	8.5
Assimilable potassium	205 ppm
Salinity pretest	0.17 mmhos cm−1
Clay texture	31.30%
Sand texture	37.02%
Silt texture	31.68%

Soil assays were performed by the Andalucian Service of soil analysis laboratory using International Standard methods.