Effects of different nitrogen substrates on soil microbial communities associated with heterotrophic nitrification in a grazed dairy pasture soil
This study investigated the effects of different nitrogen substrates on soil microbial communities and their associations with heterotrophic nitrification in a grazed dairy pasture soil in New Zealand. Soil was amended with ammonium sulfate, urea, glycine, maize stem or perennial ryegrass leaf, with an unamended control. Bacterial and fungal communities were characterised using 16S rRNA gene and ITS amplicon sequencing, respectively, to assess microbial community responses to substrate addition and identify taxa potentially associated with heterotrophic nitrification.