No-tillage effects on N and P exports across a rice-planted watershed

Environmental Science and Pollution Research International
Xinqiang LiangLixian Xu

Abstract

No tillage (NT) can be used as a management tool to alleviate the negative effects of agricultural practices on the environment by reducing the runoff volume and nutrient exports. The main objective of this research was to quantify the effect of NT on nitrogen (N) and phosphorus (P) exports across a rice-planted watershed using the soil and water assessment tool (SWAT) model. Results show that total N and P runoff exports from rice fields across the watershed ranged from 7.2 to 22.8 kg N/ha and 0.56 to 6.80 kg P/ha, respectively, over five rice-growing seasons under conventional tillage (CT) practice. The adoption of NT reduced the runoff volume, and the total N and total P exports by 25.9, 8.5, and 7.8 %, respectively, compared with the total exports under CT practice in the same study area. Rice yields were reduced by 0.7-1.9 % within the first 4 years after the adoption of NT, but began to rise in the fifth year. These results suggest that a long-term period of NT practice is necessary to reduce N and P exports without comprising the rice yield on rice-planted watersheds. In addition, the benefits of implementing NT practice alone were limited, and other practices, such as water and nutrient management, should be combined wi...Continue Reading

References

May 6, 2003·Environmental Science and Pollution Research International·Val H Smith
Aug 23, 2003·Journal of Environmental Quality·I C DaveredeL C Gonzini
Jul 31, 2009·Environmental Science and Pollution Research International·Gilbert C SiguaSamuel W Coleman
Jul 4, 2012·The Science of the Total Environment·Jennifer A J DungaitKeith W T Goulding
Jan 24, 2013·Environmental Science and Pollution Research International·Sarah Schönbrodt-StittThomas Scholten
Jun 12, 2013·Environmental Science and Pollution Research International·Chengchun SunLei Chen
Oct 12, 2014·Environmental Science and Pollution Research International·Yujiang XiongShihong Yang
Oct 23, 2014·Nature·Cameron M PittelkowChris van Kessel
Mar 26, 2015·Environmental Monitoring and Assessment·Cledimar Rogério LourenziGustavo Brunetto
May 30, 2015·Journal of Environmental Quality·Kun HanRay B Bryant

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Citations

Nov 30, 2020·The Science of the Total Environment·Manuel González-RosadoBeatriz Lozano-García

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