| Ferrous iron content (µg/g dry soil) | ||||
Source of variation | df | BOUAKE-189 | ROK-5 | ||
|
| F | p | F | p |
Fertilization | 2 | 4.731 | 0.009* | 3.040 | 0.049* |
Stage of growth | 12 | 60.562 | <0.0001** | 41.174 | <0.0001** |
Fertilization* Stage of growth | 24 | 2.902 | <0.0001** | 4.588 | <0.0001** |