Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities
Abstract:The objective of this work was to evaluate the effect of grazing intensity on the decomposition of cover crop pasture, dung, and soybean residues, as well as the C and N release rates from these residues in a long-term integrated soybean-beef cattle system under no-tillage. The experiment w...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Embrapa Informação Tecnológica
2015-10-01
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| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000967&lng=en&tlng=en |
| _version_ | 1818550119362985984 |
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| author | Joice Mari Assmann Ibanor Anghinoni Amanda Posselt Martins Sérgio Ely Valadão Gigante de Andrade Costa Taise Robinson Kunrath Cimélio Bayer Paulo Cesar de Faccio Carvalho Alan Joseph Franzluebbers |
| author_facet | Joice Mari Assmann Ibanor Anghinoni Amanda Posselt Martins Sérgio Ely Valadão Gigante de Andrade Costa Taise Robinson Kunrath Cimélio Bayer Paulo Cesar de Faccio Carvalho Alan Joseph Franzluebbers |
| author_sort | Joice Mari Assmann |
| collection | DOAJ |
| description | Abstract:The objective of this work was to evaluate the effect of grazing intensity on the decomposition of cover crop pasture, dung, and soybean residues, as well as the C and N release rates from these residues in a long-term integrated soybean-beef cattle system under no-tillage. The experiment was initiated in 2001, with soybean cultivated in summer and black oat + Italian ryegrass in winter. The treatments consisted of four sward heights (10, 20, 30, and 40 cm), plus an ungrazed area, as the control. In 2009-2011, residues from pasture, dung, and soybean stems and leaves were placed in nylon-mesh litter bags and allowed to decompose for up to 258 days. With increasing grazing intensity, residual dry matter of the pasture decreased and that of dung increased. Pasture and dung lignin concentrations and C release rates were lower with moderate grazing intensity. C and N release rates from soybean residues are not affected by grazing intensity. The moderate grazing intensity produces higher quality residues, both for pasture and dung. Total C and N release is influenced by the greater residual dry matter produced when pastures were either lightly grazed or ungrazed. |
| first_indexed | 2024-12-12T08:42:12Z |
| format | Article |
| id | doaj.art-21ce46defbb641f0bef51d223a2114ce |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-12-12T08:42:12Z |
| publishDate | 2015-10-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-21ce46defbb641f0bef51d223a2114ce2022-12-22T00:30:44ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39212015-10-01501096797810.1590/S0100-204X2015001000013S0100-204X2015001000967Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensitiesJoice Mari AssmannIbanor AnghinoniAmanda Posselt MartinsSérgio Ely Valadão Gigante de Andrade CostaTaise Robinson KunrathCimélio BayerPaulo Cesar de Faccio CarvalhoAlan Joseph FranzluebbersAbstract:The objective of this work was to evaluate the effect of grazing intensity on the decomposition of cover crop pasture, dung, and soybean residues, as well as the C and N release rates from these residues in a long-term integrated soybean-beef cattle system under no-tillage. The experiment was initiated in 2001, with soybean cultivated in summer and black oat + Italian ryegrass in winter. The treatments consisted of four sward heights (10, 20, 30, and 40 cm), plus an ungrazed area, as the control. In 2009-2011, residues from pasture, dung, and soybean stems and leaves were placed in nylon-mesh litter bags and allowed to decompose for up to 258 days. With increasing grazing intensity, residual dry matter of the pasture decreased and that of dung increased. Pasture and dung lignin concentrations and C release rates were lower with moderate grazing intensity. C and N release rates from soybean residues are not affected by grazing intensity. The moderate grazing intensity produces higher quality residues, both for pasture and dung. Total C and N release is influenced by the greater residual dry matter produced when pastures were either lightly grazed or ungrazed.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000967&lng=en&tlng=enAvena strigosaGlycine maxLolium multiflorumintegração lavoura-pecuáriaciclagem de nutrientesmatéria orgânica do solo. |
| spellingShingle | Joice Mari Assmann Ibanor Anghinoni Amanda Posselt Martins Sérgio Ely Valadão Gigante de Andrade Costa Taise Robinson Kunrath Cimélio Bayer Paulo Cesar de Faccio Carvalho Alan Joseph Franzluebbers Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities Pesquisa Agropecuária Brasileira Avena strigosa Glycine max Lolium multiflorum integração lavoura-pecuária ciclagem de nutrientes matéria orgânica do solo. |
| title | Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities |
| title_full | Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities |
| title_fullStr | Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities |
| title_full_unstemmed | Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities |
| title_short | Carbon and nitrogen cycling in an integrated soybean-beef cattle production system under different grazing intensities |
| title_sort | carbon and nitrogen cycling in an integrated soybean beef cattle production system under different grazing intensities |
| topic | Avena strigosa Glycine max Lolium multiflorum integração lavoura-pecuária ciclagem de nutrientes matéria orgânica do solo. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000967&lng=en&tlng=en |
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