Comparison of fate of nitrogen applied to 4 different kinds of soils with particular reference to denitrification

Fate of the nitrogen from fertilizers in field-grown maize

“…The main factors controlling N volatilization from fertilizers are the fertilizer type and rate, and the application form. Losses of N oxides from the soil via the denitrification process have been reported to be between 2 and 12 % (Liang and MacKenzie 1997;Nishio et al 2002). There are other sinks for N usually considered minor (Davidson et al 1990;Vitousek and Matson 1984).…”

Effect of Soil Type and Fertilizer Management on Archaeal Community in Upland Field Soils

“…In some soils, archaeal amoA genes are considered to be more abundant than bacterial amoA genes (19). In our field, nitrification activities were higher in Andosol with higher total N contents (28), and in glacier forelands ammonia oxidation was positively correlated to total N (41). In future work, we will analysis the relationship between nitrification activity and the existence taxa of ammonia-oxidizing archaea.…”

Effect of Organic matter application on the fate of15N-labeled ammonium fertilizer in an upland soil

“…Since application of easily decomposable organic matter enhances the denitrification activity as well as immobilization (Nishio et al 2001), total recovery of N fertilizer may not always increase by the application of such easily decomposable organic matter. On the other hand, the subsoils in the plots (soil type: Low-Humic Andosols) were able to adsorb nitrate (Nishio et al 2002). Even when enhancement of immobilization by applied organic matter was low, some portion of nitrate leaching could be reduced by the adsorption onto the subsurface layer.…”