Source of variation

DF

Log (SRB number/g dry soil)

Sulfides (µg/g dry soil)

F

P

F

P

Drainage

3

1.634

0.187^ns

3.062

0.032^*

Period

11

27.077

<0.0001^**

4.195

<0.0001^**

Drainage x Period

33

2.546

0.000^**

1.390

0.110^ns