English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the zaia usage as premium feature

ZAIA

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the access of premium content as premium feature

Premium Content

Zendy Tools

Zendy Open

Urine deposition on grassland causes significant NO losses, which in some cases may result from increased denitrification stimulated by labile compounds released from scorched plant roots. Two 12-day experiments were conducted in C- labelled grassland monoliths to investigate the link between NO production and carbon mineralization following application of low rates of urine-N. Measurements of NO and CO emissions from the monoliths as well as C signal of evolved CO were done on day −4, −1, 0, 1, 2, 4, 5, 6 and 7 after application of urine corresponding to 3.1 and 5.5 g N m in the first and second experiment, respectively. The C signal was also determined for soil organic matter, dissolved organic C and CO evolved by microbial respiration. In addition, denitrifying enzyme activity (DEA) and nitrifying enzyme activity (NEA) were measured on day −1, 2 and 7 after the first urine application event. Urine did not affect DEA, whereas NEA was enhanced 2 days after urine application. In the first experiment, urine had no significant effect on the NO flux, which was generally low (−8 to g NO-N m h). After the second application event, the NO emission increased significantly to g NO-N m h and the NO emission factor for the added urine-N was 0.18%. However, the associated C signal of soil respiration was unaffected by urine. Consequently, the increased NO emission from the simulated low N-urine patches was not caused by enhanced denitrification stimulated by labile compounds released from scorched plant roots.

Lack of increased availability of root-derived C may explain the low N2O emission from low N-urine patches