Impact of Nutrient Management on Wheat/Vegetable Yields and the Fate of 15N-Labeled Fertilizer in the Yangtze River Basin

A - Papers appearing in refereed journals

Wang, S., Yang, L. S., Liao, S. P., Sun, B., Shi, X. J., Lu, J. W., Guo, S. W., Shen, J. B., Zhang, F. S., Goulding, K. W. T. and Li, X. J. 2022. Impact of Nutrient Management on Wheat/Vegetable Yields and the Fate of 15N-Labeled Fertilizer in the Yangtze River Basin. Frontiers in Environmental Science. 10 (March), p. 772972. https://doi.org/10.3389/fenvs.2022.772972

AuthorsWang, S., Yang, L. S., Liao, S. P., Sun, B., Shi, X. J., Lu, J. W., Guo, S. W., Shen, J. B., Zhang, F. S., Goulding, K. W. T. and Li, X. J.
Abstract

The Yangtze River Basin (YRB) crosses three economic zones and major agricultural regions of eastern, central, and western China. Increasing non-point source pollution, caused by excessive nitrogen (N) inputs to farms, is one of the main causes of water contamination in the YRB. To improve N fertilizer use efficiency, we conducted a field experiment using 15N-labeled urea at three sites located in upstream, midstream, and downstream regions of the YRB to evaluate the impacts of improved fertilizer management on crop yield, fertilizer N recovery, and losses in three crop rotations: rice–wheat (RW), rice–vegetable (RV) [tuber mustard at Jiangjin (Chongqing), cabbage at Shayang (Hubei), and savoy cabbage at Rugao (Jiangsu)] and maize–wheat (MW). Applying only 50% of the traditional application of N and P fertilizer maintained the wheat yield at Jiangjin and Shayang and savoy cabbage yield at Rugao. However, it caused a 27% reduction of the wheat yield at Rugao. The 15N recovery showed that 27% of the fertilizer N was retained in the soil and that 25% less fertilizer N was lost to the environment compared to the
traditional fertilizer application. Improved fertilizer management would reduce the environmental cost of farming in the YRB, but with some consequences to winter crop yields.

KeywordsWheat/vegetable; 15N-labeled; Nitrogen fate; Yangtze River Basin; Yield
Year of Publication2022
JournalFrontiers in Environmental Science
Journal citation10 (March), p. 772972
Digital Object Identifier (DOI)https://doi.org/10.3389/fenvs.2022.772972
Web address (URL)doi: 10.3389/fenvs.2022.772972
Open accessPublished as ‘gold’ (paid) open access
FunderBBSRC Newton funding
Funder project or codeUK - China Virtual Joint Centre for Improved Nitrogen Agronomy (CINAG)
Publisher's version
Output statusPublished
Publication dates
Online28 Mar 2022
Publication process dates
Accepted14 Feb 2022
PublisherFrontiers Media SA
ISSN2296-665X

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