Table 3.
Mean values and standard deviation (SD) of some topsoil (0–10 cm) properties for the two great soil groups used for rice production in Camaquã region (values from soil samples collected at harvest time).
Soil great
group Colour Organic mater
Clay
pH
Bulk density
Total porosity
Total N
P
K
(%) SD (%) SD SD (g cm−3) SD (%) SD (%) SD (mg dm−3) SD (mg dm−3) SD
Albaqualfs White 2.6 1.1 26.5 14.2 4.9 0.2 1.5 0.2 0.4 0.1 0.1 0.1 8.4 5.4 36.0 19.5
Endoaqualfs Black 7.7 2.6 59.8 12.9 5.0 0.3 0.9 0.2 0.6 0.1 0.5 0.3 10.8 6.2 41.6 29.5