{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T11:22:29Z","timestamp":1791976949397,"version":"4.4.0"},"reference-count":70,"publisher":"Wiley","issue":"15","license":[{"start":{"date-parts":[[2022,6,8]],"date-time":"2022-06-08T00:00:00Z","timestamp":1654646400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Global Change Biology"],"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The global increases in the surface and groundwater nitrate (NO\n                    <jats:sub>3<\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    ) concentrations due to synthetic fertilizer input have emerged as major sustainability threats to terrestrial and aquatic ecosystems. Cover crops can reportedly reduce nitrate leaching from croplands. However, the underlying mechanisms and the effectiveness of cover crops in reducing nitrate leaching across species, soil types, agronomic management, and climates remain elusive. We conducted a global meta\u2010analysis to evaluate the effects of cover crops on nitrate leaching and water drainage. A random\u2010effects analysis was established to investigate seven moderating variables in 41 articles. Results showed that globally, cover crops reduced nitrate leaching by 69% compared with fallow while demonstrating no effect on water drainage. Overall, cover crops from Brassicaceae and Poaceae families showed the greatest effect with 75% and 52% reduction in nitrate leaching, respectively. Cover cropping on Ultisols, Histosols, and Inceptisols resulted in the greatest reduction in nitrate leaching (77%, 78%, and 77%, respectively). Greater efficacy of cover crops at reducing nitrate leaching was evident with increasing soil sand content. In general, cover crops appeared to perform better to reduce nitrate leaching in vegetable systems compared to field crops. Cover cropping on conventional tillage resulted in a 63% reduction in nitrate leaching compared with no\u2010tillage (50%) and reduced tillage (38%) systems. The impact of cover crops on water drainage was nonsignificant which implies that nitrate leaching control by cover crops is unlikely exerted through reducing water drainage. This study brings further insight into the intrinsic factors affecting cover crop efficacy and management practices that enhance cover crop potential in reducing nitrate leaching from agricultural systems.\n                  <\/jats:p>","DOI":"10.1111\/gcb.16269","type":"journal-article","created":{"date-parts":[[2022,5,18]],"date-time":"2022-05-18T10:29:45Z","timestamp":1652869785000},"page":"4736-4749","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":185,"title":["When do cover crops reduce nitrate leaching? A global meta\u2010analysis"],"prefix":"10.1111","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8913-8417","authenticated-orcid":false,"given":"Amin","family":"Nouri","sequence":"first","affiliation":[{"name":"Hermiston Agricultural Research and Extension Center Oregon State University  Hermiston Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4125-1853","authenticated-orcid":false,"given":"Scott","family":"Lukas","sequence":"additional","affiliation":[{"name":"Hermiston Agricultural Research and Extension Center Oregon State University  Hermiston Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6442-8215","authenticated-orcid":false,"given":"Shikha","family":"Singh","sequence":"additional","affiliation":[{"name":"Hermiston Agricultural Research and Extension Center Oregon State University  Hermiston Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0920-5665","authenticated-orcid":false,"given":"Surendra","family":"Singh","sequence":"additional","affiliation":[{"name":"Columbia Basin Agricultural Research Center Oregon State University  Adams Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4614-7959","authenticated-orcid":false,"given":"Stephen","family":"Machado","sequence":"additional","affiliation":[{"name":"Columbia Basin Agricultural Research Center Oregon State University  Adams Oregon USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,6,8]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/gcb.14644"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.2134\/agronj2004.1164"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.agee.2012.03.002"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clay.2017.11.007"},{"key":"e_1_2_8_6_1","volume-title":"Tabula technology: Knight foundation","author":"Aristar\u00e1n M.","year":"2018"},{"key":"e_1_2_8_7_1","first-page":"869","volume-title":"Soil survey staff 1999, soil taxonomy: A basic system of soil classification for making and interpreting soil surveys, agricultural handbook 436","author":"Baillie I.","year":"2001"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1100\/tsw.2001.457"},{"key":"e_1_2_8_9_1","volume-title":"Comprehensive meta\u2010analysis (version 2.2. 0462)","author":"Borenstein M.","year":"2007"},{"key":"e_1_2_8_10_1","volume-title":"Comprehensive meta\u2010analysis version 3","author":"Borenstein M.","year":"2013"},{"key":"e_1_2_8_11_1","volume-title":"The nature and properties of soils","author":"Brady N. 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