{"id":282754,"date":"2021-06-24T16:50:59","date_gmt":"2021-06-24T13:50:59","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/how-nitrogen-fertilizer-management-affects-soil-concentration-and-surface-flux\/"},"modified":"2021-06-24T16:50:59","modified_gmt":"2021-06-24T13:50:59","slug":"how-nitrogen-fertilizer-management-affects-soil-concentration-and-surface-flux","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/how-nitrogen-fertilizer-management-affects-soil-concentration-and-surface-flux\/","title":{"rendered":"#How nitrogen fertilizer management affects soil concentration and surface flux"},"content":{"rendered":"

“#How nitrogen fertilizer management affects soil concentration and surface flux<\/strong>”<\/p>\n

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An international team led by researchers from the Xinjiang Institute of Ecology and Geography (XIEG) of the Chinese Academy of Science<\/a>s and the University of Manitoba has revealed the effect of nitrogen (N) fertilizer management on N2<\/sub>O concentration and surface flux.<\/p>\n

Agricultural soil N2<\/sub>O surface emissions are determined by its production, diffusion, and consumption along soil profile, which can be strongly influenced by N fertilizer management. Drip fertigation is a widely used strategy in arid and semi-arid climate regions for the benefits of saving irrigation water and increasing fertilizer use efficiency. <\/p>\n

It remains unclear how the source and rate of nitrogen (N) fertilizers affect N2<\/sub>O concentration and effluxes along the soil profile under the drip-fertigated agricultural system. <\/p>\n

The researchers carried out an experiment in a cotton field in arid northwestern China from 2017 to 2018 to elucidate the impact of the app<\/a>lications of conventional urea (Urea), polymer-coated urea (ESN) and stabilized urea (SuperU) at rates of 120 and 240 kg N ha-1<\/sup> on concentration and efflux of N2<\/sub>O in the soil profile and its relationship with N2<\/sub>O surface emissions. <\/p>\n

Results showed that N rate or source did not affect soil N2<\/sub>O concentrations or effluxes at each depth. Surface emissions of N2<\/sub>O were mostly associated with that presented in the top layer of 0-5 cm.<\/p>\n

Surface N2<\/sub>O efflux determined by gradient-based (GM) was poorly or not associated with those of chamber measurements, which was attributed to the low N2<\/sub>O production restricted by soil moisture condition under the drip-fertigated condition. <\/p>\n

The study was published in Environmental Pollution<\/i>.<\/p>\n\n

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Nitrogen fertilizers are not effective in reducing nitrous oxide emissions from drip-irrigated cotton fields\n <\/p><\/div>\n

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\n More information:<\/strong>
\n Yanyan Li et al, Linking soil profile N2O concentration with surface flux in a cotton field under drip fertigation, Environmental Pollution<\/i> (2021). DOI: 10.1016\/j.envpol.2021.117458<\/a><\/p><\/div>\n
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\n Chinese Academy of Sciences
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Citation<\/strong>:
\n How nitrogen fertilizer management affects soil concentration and surface flux (2021, June 24)
\n retrieved 24 June 2021
\n from https:\/\/phys.org\/news<\/a>\/2021-06-nitrogen-fertilizer-affects-soil-surface.html<\/p>\n

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