mineralization or ammonification -the conversion of organic nitrogen (in the -NH2 form) to
inorganic nitrogen (in the NH4 form).
- the speed of conversion depends on the C:N ratio (see below).
two step process converting ammonium to nitrite, then nitrite to nitrate.
- the conversion of nitrate in the soil to gaseous nitrogen that escapes
fixation - the conversion of gaseous nitrogen
(C:N) RATIOS IN ORGANIC MATTER
C:N ratio - wood, sawdust, uncomposted
C:N ratio - manure, bone meal, fish emulsion, organic fertilizers
THAT CAN FIX NITROGEN