Dicyandiamide, a routinely used commercial nitrification inhibitor (NI), inhibits ammonia oxidation catalyzed by ammonia monooxygenase (AMO). Phenylhydrazine hydrochloride has shown considerable potential for the development of next-generation NIs targeting hydroxylamine dehydrogenase (HAO). The effects of the AMO inhibitor and the HAO inhibitor on ammonia-oxidizing bacteria (AOB) and ammonia-o...

Effective nitrogen (N) management practices are critical to sustain crop production and minimize nitrate (NO3−) leaching loss from irrigated fields in the Columbia Basin (U.S.), but studies on applied limited. Therefore, 2014 2016, two separate field were conducted sandy loam soils region evaluate performance of various N fertilizers spring winter wheat. The treatments consisted nitrification i...

Nitrification inhibitors (NIs) are useful tools to reduce nitrogen (N) losses derived from fertilization in agriculture. However, it remains unclear whether a future climate scenario with elevated CO2 could affect NIs efficiency. Thus, the objective of this work was study increase atmospheric concentration would efficiency two dimethylpyrazole-based NIs: 3,4-dimethylpyrazol phosphate (DMPP) and...

The nitrification inhibitors are very important in plant nutrition because they prevent the losses and volatilization of nitrogen fertilizers from soil surface. In this study, coated with Dicyandiamide 4-amino-l,2,4-triazole were used results these was compared their respective control treatments (without coating). Two wheat varieties Ujala16 NA1530 evaluated. field experiment arranged randomiz...

The goal of this study was to compare the microbial ecology, gene expression, biokinetics, and N2O emissions from a lab-scale bioreactor operated sequentially in full-nitrification and partial-nitrification modes. Based on sequencing of 16S rRNA and ammonia monooxygenase subunit A (amoA) genes, ammonia oxidizing bacteria (AOB) populations during full- and partial-nitrification modes were distin...

Ammonia-oxidizing bacteria and ammonia-oxidizing archaea are commonly found together in soils, yet the factors influencing their relative distribution and activity remain unclear. We examined archaeal and bacterial amoA gene distribution, and used a novel bioassay to assess archaeal and bacterial contributions to nitrification potentials in soils spanning a range of land uses (forest, pasture, ...