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**