Department of Water Science and Engineering;
UNESCO-IHE-Institute for Water Education;
Delft;
The Netherlands;
Joint Research Centre for Water and Climate;
International Institute for Water and Environmental Engineering (2iE);
Ouagadougou;
Burkina Faso;
ANOVA; Burkina; Faso; Hematite; Iron; Toxicity; Rice; Soil; Sampling; Tropical; Savannah; Valley; Bottoms; Welch; T-Test;