ammonification

The first pathway, which was tested, was the ammonification pathway.

The nitrogen is lost by the volatilization of ammonia in alkaline pH, which begins with the hydrolysis of nitrogen composts by microorganisms that degrade organic N, leading to the formation of N[H.sup.+4]-N (ammonification) (Orrico et al., 2012).

Showed here is respiratory nitrate reduction to nitrite; incomplete denitrification of nitrite in which nitrous oxide is the final product; and Nrf-dependent ammonification.

The best conditions for nitrification and ammonification in sod-podzol soil were as follows: soil temperature of + 15[degrees]C, soil moisture of 20-25%, and soil density of 1.1 g/[cm.sup.3].

This inference should be treated cautiously, because the guano [delta][sup.15]N values may have been altered after deposition by ammonification of urea-N, which has the potential to significantly increase the [delta][sup.15]N signature of TN (Mizutani et al., 1986).

Effect of sodium chloride on CO2, evolution ammonification, and nitrification in a sassafras sandy loam.

The main source of TAN in fish tanks is the ammonification of organic matter (animal feces, unconsumed feed and dead plankton).

Arginine ammonification rate is considered as an estimation of soil microbial biomass size and activity [8].

6, the N[H.sub.4.sup.+]-N concentrations in all piles, although occurring at different times, increased significantly at the initial stage and reached their maximum level because of ammonification which is always associated with temperature increase and mineralization of organic N compounds (Bueno et al.

This suggests that ammonium is produced by the mineralization (ammonification) of the organic components from particulate and dissolved materials, probably exported from lagoons.

Beauchamp, "Denitrification and ammonification at low soil temperatures," Canadian Journal of Soil Science, vol.