TABLE 2

Geographical and soil information for test locations

ParameterMuriazeRuaceSussundenga
Environmental conditions
    Latitude15o09′12.9″S15o14′17.5″S19o19′2.2″S
    Longitude39o19′20″E36o43′44.8″E33o14′22.5″E
    VegetationSemiarid savannahGrasslandWooded grassland
    Soil typeSand-clay-loamClay-loamSand-loam
    Elevation (m)398707630
    Temp (°C)18.3–35.711.6–33.815.2–34.2
    Cropping historyFallowSesameMaize
    pH6.385.936.41
Soil conditions
    Electrical conductivity (salts) (dS/m)0.040.070.04
    Organic P (mg · kg−1)7.5926.110.19
    N (%)0.120.050.09
    K (mg · kg−1)156.5221108
    Ca (mg · kg−1)1,009803.5408
    Mg (mg · kg−1)107.1112.876.3
    Na (mg · kg−1)19.213.217.6
    Cation exchange capacity [cmol(+)/kg]7.57.23.5