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Long-Term No-Tillage Sequesters Soil Organic Carbon in Cool Semiarid Regions

2015; Wiley; Volume: 56; Issue: 6 Linguagem: Inglês

10.2136/sh15-07-0016

2163-2812

Patrick M. Carr, Eric C. Brevik, Richard D. Horsley, Glenn B. Martin,

Rangeland and Wildlife Management

Soil HorizonsVolume 56, Issue 6 sh15-07-0016 p. 1-7 Peer Reviewed Paper Long-Term No-Tillage Sequesters Soil Organic Carbon in Cool Semiarid Regions Patrick M. Carr, Corresponding Author Patrick M. Carr Patrick.Carr.1@ndsu.edu Dickinson Research Extension Center, North Dakota State Univ., Dickinson, ND, 58601Corresponding author (Patrick.Carr.1@ndsu.edu).Search for more papers by this authorEric C. Brevik, Eric C. Brevik Dep. of Natural Sciences, Dickinson State Univ., Dickinson, ND, 58601Search for more papers by this authorRichard D. Horsley, Richard D. Horsley Dep. of Plant Sciences, Dep. 7670, North Dakota State Univ., Fargo, ND, 58108-6050Search for more papers by this authorGlenn B. Martin, Glenn B. Martin Dickinson Research Extension Center, North Dakota State Univ., Dickinson, ND, 58601Search for more papers by this author Patrick M. Carr, Corresponding Author Patrick M. Carr Patrick.Carr.1@ndsu.edu Dickinson Research Extension Center, North Dakota State Univ., Dickinson, ND, 58601Corresponding author (Patrick.Carr.1@ndsu.edu).Search for more papers by this authorEric C. Brevik, Eric C. Brevik Dep. of Natural Sciences, Dickinson State Univ., Dickinson, ND, 58601Search for more papers by this authorRichard D. Horsley, Richard D. Horsley Dep. of Plant Sciences, Dep. 7670, North Dakota State Univ., Fargo, ND, 58108-6050Search for more papers by this authorGlenn B. Martin, Glenn B. Martin Dickinson Research Extension Center, North Dakota State Univ., Dickinson, ND, 58601Search for more papers by this author First published: 03 December 2015 https://doi.org/10.2136/sh15-07-0016Citations: 19 All rights reserved. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract No-tillage (NT) has been promoted as a strategy for sequestering soil organic carbon (SOC) in crop production systems. However, recent research suggests stratification rather than sequestration of SOC may occur following adoption of NT, with no net increase in SOC. Our objective was to determine if SOC was sequestered in long-term NT plots in a cool semiarid region. Soil was collected from 0- to 30-, 30- to 60-, and 60- to 90-cm depth intervals in plots arranged in a randomized complete block where clean-tillage (CT), reduced-tillage (RT), and NT treatments had been maintained in eight blocks for 20 yr at Dickinson, ND, USA. More SOC occurred at the 0- to 30-cm depth under NT (64 Mg C ha–1) than under both RT and CT (≤55 Mg C ha–1) management (SE = 2; P < 0.001) and at the 30- to 60-cm depth under NT than RT (33 vs. 28 Mg C ha–1, P < 0.03). Similarly, more SOC occurred at the 60- to 90-cm depth under NT than RT (29 vs. 22 Mg C ha–1, P = 0.003). Overall, amounts of SOC in the upper 90 cm of soil were greatest under NT at 127 Mg C ha–1 compared with 104 Mg C ha–1 under RT and 112 Mg C ha–1 under CT (P = 0.005). Results of this research indicate that conversion of CT and RT to NT in cool semiarid regions can result in the sequestration of SOC when both surface and subsurface depths are considered. Citing Literature Volume56, Issue6November‐December 2015Pages 1-7 RelatedInformation