New Zealand’s grazed pastures receive large quantities of nitrogen (N) inputs from animal excreta and chemical fertilisers. While N promotes pasture growth, surplus N can cause environmental problems by leaching into waterways or by nitrifying and denitrifying to form the greenhouse gas, nitrous oxide (N2O). Various approaches have been attempted to mitigate the economic and environmental impac...

Nitrification inhibitors (NIs) delay the oxidation of ammonium by soil microorganisms, maintaining a higher proportion of applied nitrogen (N) in the soil by preventing nitrate-N loss from leaching and gaseous N losses from nitrification and denitrification. Thus, a large number of studies have shown N fertilizers with NIs are more environmentally friendly. In contrast, there are only a lim...

nitrification rate of biofilters is influenced by ammonia concentration and levels of ammonia vary in response to feeding time. on the other hand, existence and activity of different groups of bacteria can be expected in the biofilters. hence in this research, nitrification dynamic of biofilters during day hours and also rules of different biofilteration process (nitrification, denitrification ...

In order to assess the applicability of using microelectrodes as a tool for inhibition tests, temporal and spatial inhibitory effects of 2-chlorophenol (2-CP) on O(2) respiration and nitrification activities in municipal wastewater biofilms were investigated using microelectrodes for O(2) and NH(4)(+). The time-course microelectrode measurements demonstrated that 2-CP inhibited O(2) respiration...

Nitrogen (N) input from fertilizers modifies the properties of agricultural soils as well bacterial community diversity, composition and relationships. This can lead to negative impacts such deterioration system multifunctionality, whose maintenance is critical normal nutrient cycling. Synthetic nitrification inhibitors (NIs) be combined with improve efficiency N use by reducing losses. However...

Abstract Background and aims Sorghum ( bicolor ) is able to exude allelochemicals with biological nitrification inhibition (BNI) capacity. Therefore, sorghum might be an option as cover crop since its BNI ability may reduce N pollution in the following due a decreased nitrification. However, exudation related physiological state development of plant, so abiotic stresses such drought modify rate...

Activity of nitrification inhibitors to several typical ammonia-oxidizing bacteria isolated recently, i. e. Nitrosococcus, Nitrosolobus, Nitrosomonas, Nitrosospira and Nitrosovibrio species was assayed using 2-amino-4-methyl-trichloromethyl-1,3,5-triazine (MAST), 2-amino-4-tribromomethyl-6-trichloromethyl-1,3,5-triazine (Br-MAST), 2-chloro-6-trichloromethylpyridine (nitrapyrin) and others, and ...

Abstract Purpose Nitrification inhibitor plays an important regulatory role in inhibiting the nitrification of ammonium soils. However, most inhibitors lack sustainable effects suppressing ammonium. In this study, a novel DMS was prepared and tested to explore its lasting effect suppression black soil. Materials methods Both culture experiments field trial were performed Three kinds (NIs), dicy...