Short-term effects of grazing intensity and nitrogen fertilization on soil organic carbon pools under perennial grass pastures in the southeastern USA
Pasture management can have important implications on the amounts and long-term stability of soil organic carbon (SOC). We investigated the short-term impacts of grazing intensity and nitrogen (N) fertilization levels on C dynamics into the various SOC pools in rotationally stocked ‘Tifton 85’ bermu...
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| Veröffentlicht in: | Soil biology & biochemistry 2013-03, Vol.58, p.42-49 |
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| creator | Silveira, Maria L. Liu, Kesi Sollenberger, Lynn E. Follett, Ronald F. Vendramini, João M.B. |
| description | Pasture management can have important implications on the amounts and long-term stability of soil organic carbon (SOC). We investigated the short-term impacts of grazing intensity and nitrogen (N) fertilization levels on C dynamics into the various SOC pools in rotationally stocked ‘Tifton 85’ bermudagrass (Cynodon spp.) pastures. Treatments consisted of three grazing intensities (based on target postgraze stubble heights of 8, 16, and 24 cm) and three levels of N fertilization (50, 150, and 250 kg N ha−1 yr−1). Soil samples (0- to 20-cm depth) were taken prior to imposing treatments and at the end of the 2-yr study. Grazing intensity and N levels had no effect on bulk SOC and N concentration and content. Greater stubble height and rate of N fertilizer resulted in a linear increase in particulate organic carbon (POC) and C and N concentration in the |
| doi_str_mv | 10.1016/j.soilbio.2012.11.003 |
| format | Article |
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► Soil organic C in grasslands is strongly influenced by management. ► Grazing intensity and N levels had no short-term effect on bulk soil carbon levels. ► Particulate organic carbon increased linearly as grazing intensity decrease. ► 13C data indicated that grazing intensity affects readily decomposable C. ► Pasture management can affect soil carbon fractions in as little as 2 yr.</description><identifier>ISSN: 0038-0717</identifier><identifier>EISSN: 1879-3428</identifier><identifier>DOI: 10.1016/j.soilbio.2012.11.003</identifier><identifier>CODEN: SBIOAH</identifier><language>eng</language><publisher>Amsterdam: Elsevier Ltd</publisher><subject>Agronomy. Soil science and plant productions ; Biochemistry and biology ; Biological and medical sciences ; Chemical, physicochemical, biochemical and biological properties ; Cynodon ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Nitrogen, phosphorus, potassium fertilizations ; Organic matter ; Particle-size fraction ; Particulate organic carbon ; Physics, chemistry, biochemistry and biology of agricultural and forest soils ; Sandy soils ; Soil science ; Soil-plant relationships. Soil fertility. Fertilization. Amendments ; Stable isotope ratios (δ13C)</subject><ispartof>Soil biology & biochemistry, 2013-03, Vol.58, p.42-49</ispartof><rights>2012 Elsevier Ltd</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-f9bd9e7d9ac9864edd63a72a47352b903b9a41ab2289710aa97a7caeeeada4023</citedby><cites>FETCH-LOGICAL-c372t-f9bd9e7d9ac9864edd63a72a47352b903b9a41ab2289710aa97a7caeeeada4023</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.soilbio.2012.11.003$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27175573$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Silveira, Maria L.</creatorcontrib><creatorcontrib>Liu, Kesi</creatorcontrib><creatorcontrib>Sollenberger, Lynn E.</creatorcontrib><creatorcontrib>Follett, Ronald F.</creatorcontrib><creatorcontrib>Vendramini, João M.B.</creatorcontrib><title>Short-term effects of grazing intensity and nitrogen fertilization on soil organic carbon pools under perennial grass pastures in the southeastern USA</title><title>Soil biology & biochemistry</title><description>Pasture management can have important implications on the amounts and long-term stability of soil organic carbon (SOC). We investigated the short-term impacts of grazing intensity and nitrogen (N) fertilization levels on C dynamics into the various SOC pools in rotationally stocked ‘Tifton 85’ bermudagrass (Cynodon spp.) pastures. Treatments consisted of three grazing intensities (based on target postgraze stubble heights of 8, 16, and 24 cm) and three levels of N fertilization (50, 150, and 250 kg N ha−1 yr−1). Soil samples (0- to 20-cm depth) were taken prior to imposing treatments and at the end of the 2-yr study. Grazing intensity and N levels had no effect on bulk SOC and N concentration and content. Greater stubble height and rate of N fertilizer resulted in a linear increase in particulate organic carbon (POC) and C and N concentration in the <53-μm particle-size fraction. Grazing intensity and N fertilization showed significant effects on δ13C values and the relative amounts of C3-C vs. C4-C. The δ13C data indicated that readily decomposable C components (C4-derived C) were lost in response to more intensive grazing (stubble height of 8 cm). Results demonstrated that POC and C associated with <53 μm particle-size fraction were sensitive indicators of short-term impacts of pasture management strategies on SOC. Further studies are warranted to examine the long-term impacts of grassland management on SOC pools in sandy soils of subtropical regions.
► Soil organic C in grasslands is strongly influenced by management. ► Grazing intensity and N levels had no short-term effect on bulk soil carbon levels. ► Particulate organic carbon increased linearly as grazing intensity decrease. ► 13C data indicated that grazing intensity affects readily decomposable C. ► Pasture management can affect soil carbon fractions in as little as 2 yr.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biochemistry and biology</subject><subject>Biological and medical sciences</subject><subject>Chemical, physicochemical, biochemical and biological properties</subject><subject>Cynodon</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agronomy. Plant production</subject><subject>Nitrogen, phosphorus, potassium fertilizations</subject><subject>Organic matter</subject><subject>Particle-size fraction</subject><subject>Particulate organic carbon</subject><subject>Physics, chemistry, biochemistry and biology of agricultural and forest soils</subject><subject>Sandy soils</subject><subject>Soil science</subject><subject>Soil-plant relationships. Soil fertility. Fertilization. Amendments</subject><subject>Stable isotope ratios (δ13C)</subject><issn>0038-0717</issn><issn>1879-3428</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkVGL1DAUhYsoOK7-BCEvgi-tSdpO2idZFleFBR_WfQ636e1shk5S702F3R_i7zVlBl-FwIXDOfck-YrivZKVkmr_6Vhx9PPgY6Wl0pVSlZT1i2KnOtOXdaO7l8UuK10pjTKvizfMRymlblW9K_7cP0ZKZUI6CZwmdIlFnMSB4NmHg_AhYWCfngSEUQSfKB4wiAkp-dk_Q_IxiHy2C4hIBwjeCQc0ZG2JcWaxhhFJLEgYgod528wsFuC0EnIuEOkRc37NI4tIQTzcX78tXk0wM767zKvi4fbLz5tv5d2Pr99vru9KVxudyqkfxh7N2IPru32D47ivwWhoTN3qoZf10EOjYNC6642SAL0B4wARYYRG6vqq-Hjeu1D8tSIne_LscJ4hYFzZqlZKY7q226zt2eooMhNOdiF_AnqyStqNgz3aCwe7cbBK2fzrOffhUgHsYJ4IgvP8L6wzk7Y1m-_z2Yf5vb89kmXnMTgcPWUsdoz-P01_AWmJpYA</recordid><startdate>20130301</startdate><enddate>20130301</enddate><creator>Silveira, Maria L.</creator><creator>Liu, Kesi</creator><creator>Sollenberger, Lynn E.</creator><creator>Follett, Ronald F.</creator><creator>Vendramini, João M.B.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>20130301</creationdate><title>Short-term effects of grazing intensity and nitrogen fertilization on soil organic carbon pools under perennial grass pastures in the southeastern USA</title><author>Silveira, Maria L. ; Liu, Kesi ; Sollenberger, Lynn E. ; Follett, Ronald F. ; Vendramini, João M.B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-f9bd9e7d9ac9864edd63a72a47352b903b9a41ab2289710aa97a7caeeeada4023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>Biochemistry and biology</topic><topic>Biological and medical sciences</topic><topic>Chemical, physicochemical, biochemical and biological properties</topic><topic>Cynodon</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>Nitrogen, phosphorus, potassium fertilizations</topic><topic>Organic matter</topic><topic>Particle-size fraction</topic><topic>Particulate organic carbon</topic><topic>Physics, chemistry, biochemistry and biology of agricultural and forest soils</topic><topic>Sandy soils</topic><topic>Soil science</topic><topic>Soil-plant relationships. Soil fertility. Fertilization. Amendments</topic><topic>Stable isotope ratios (δ13C)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Silveira, Maria L.</creatorcontrib><creatorcontrib>Liu, Kesi</creatorcontrib><creatorcontrib>Sollenberger, Lynn E.</creatorcontrib><creatorcontrib>Follett, Ronald F.</creatorcontrib><creatorcontrib>Vendramini, João M.B.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Soil biology & biochemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Silveira, Maria L.</au><au>Liu, Kesi</au><au>Sollenberger, Lynn E.</au><au>Follett, Ronald F.</au><au>Vendramini, João M.B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Short-term effects of grazing intensity and nitrogen fertilization on soil organic carbon pools under perennial grass pastures in the southeastern USA</atitle><jtitle>Soil biology & biochemistry</jtitle><date>2013-03-01</date><risdate>2013</risdate><volume>58</volume><spage>42</spage><epage>49</epage><pages>42-49</pages><issn>0038-0717</issn><eissn>1879-3428</eissn><coden>SBIOAH</coden><abstract>Pasture management can have important implications on the amounts and long-term stability of soil organic carbon (SOC). We investigated the short-term impacts of grazing intensity and nitrogen (N) fertilization levels on C dynamics into the various SOC pools in rotationally stocked ‘Tifton 85’ bermudagrass (Cynodon spp.) pastures. Treatments consisted of three grazing intensities (based on target postgraze stubble heights of 8, 16, and 24 cm) and three levels of N fertilization (50, 150, and 250 kg N ha−1 yr−1). Soil samples (0- to 20-cm depth) were taken prior to imposing treatments and at the end of the 2-yr study. Grazing intensity and N levels had no effect on bulk SOC and N concentration and content. Greater stubble height and rate of N fertilizer resulted in a linear increase in particulate organic carbon (POC) and C and N concentration in the <53-μm particle-size fraction. Grazing intensity and N fertilization showed significant effects on δ13C values and the relative amounts of C3-C vs. C4-C. The δ13C data indicated that readily decomposable C components (C4-derived C) were lost in response to more intensive grazing (stubble height of 8 cm). Results demonstrated that POC and C associated with <53 μm particle-size fraction were sensitive indicators of short-term impacts of pasture management strategies on SOC. Further studies are warranted to examine the long-term impacts of grassland management on SOC pools in sandy soils of subtropical regions.
► Soil organic C in grasslands is strongly influenced by management. ► Grazing intensity and N levels had no short-term effect on bulk soil carbon levels. ► Particulate organic carbon increased linearly as grazing intensity decrease. ► 13C data indicated that grazing intensity affects readily decomposable C. ► Pasture management can affect soil carbon fractions in as little as 2 yr.</abstract><cop>Amsterdam</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.soilbio.2012.11.003</doi><tpages>8</tpages></addata></record> |
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| subjects | Agronomy. Soil science and plant productions Biochemistry and biology Biological and medical sciences Chemical, physicochemical, biochemical and biological properties Cynodon Fundamental and applied biological sciences. Psychology General agronomy. Plant production Nitrogen, phosphorus, potassium fertilizations Organic matter Particle-size fraction Particulate organic carbon Physics, chemistry, biochemistry and biology of agricultural and forest soils Sandy soils Soil science Soil-plant relationships. Soil fertility. Fertilization. Amendments Stable isotope ratios (δ13C) |
| title | Short-term effects of grazing intensity and nitrogen fertilization on soil organic carbon pools under perennial grass pastures in the southeastern USA |
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