Agriculture Reference
In-Depth Information
porosity, Kirk
et al
. (1990b) calculated a four-fold increase in the penetration of
O
2
. There is then little accumulation of iron in the oxidation zone because the O
2
diffuses so much faster than the Fe
2
+
that almost no Fe
2
+
can move towards the
oxidation front before it is oxidized. The generation of acidity is correspondingly
dispersed through the soil. These conclusions are discussed further in Chapter 6
in relation to the rhizospheres of wetland plants.
