Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11104-021-04878-0 http://hdl.handle.net/11449/205970 |
Resumo: | Aims: Cover crop species selection for soybean (Glycine max) production under no-tillage (NT) management may affect soil organic C sequestration by altering the quantity and quality of C inputs, thereby affecting cropping system sustainability. If so, the underlying mechanisms for such regulation are still unclear. Methods: We assessed changes in soil C and N fractions at 0-0.1 m depth and soil C stock at 0-0.6 m depth during the last three years of dry-season cover cropping in a soybean production system managed with NT for 9 years on a Rhodic Hapludox in Sao Paulo, Brazil. Dry-season management treatments were repeated yearly in a split-plot scheme. Main plots during the fall-winter were (1) ruzigrass (Urochloa ruziziensis), (2) grain sorghum (Sorghum bicolor), and (3) the intercropping of ruzigrass and sorghum. Subplots during spring prior to planting soybean were (a) pearl millet (Pennisetum glaucum), (b) sunn hemp (Crotalaria juncea), and (c) forage sorghum (Sorghum bicolor). Results: Soil C and N fractions were affected according to crop residue characteristics of the rotations. Higher soil C stocks in 2012 and 2015 (7 % an average) were observed at 0.2–0.4 m depth by ruzigrass compared to sorghum. High crop residue input with ruzigrass in the fall-winter sequestered 0.61 Mg C ha− 1 yr− 1 at 0-0.1 m soil depth compared with lower C sequestration using grain sorghum (0.29 Mg C ha− 1 yr− 1). Conclusions: The quantity and quality of crop residues impact its retention on soil surface controlling the dynamics of soil C and N fractions and can be considered relevant for soil C sequestration. These aspects could contribute to the mitigation of atmospheric CO2 in crop production systems. |
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Repositório Institucional da UNESP |
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spelling |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropicsConservation managementCrop residue qualityCropping systemsSoil carbon stockAims: Cover crop species selection for soybean (Glycine max) production under no-tillage (NT) management may affect soil organic C sequestration by altering the quantity and quality of C inputs, thereby affecting cropping system sustainability. If so, the underlying mechanisms for such regulation are still unclear. Methods: We assessed changes in soil C and N fractions at 0-0.1 m depth and soil C stock at 0-0.6 m depth during the last three years of dry-season cover cropping in a soybean production system managed with NT for 9 years on a Rhodic Hapludox in Sao Paulo, Brazil. Dry-season management treatments were repeated yearly in a split-plot scheme. Main plots during the fall-winter were (1) ruzigrass (Urochloa ruziziensis), (2) grain sorghum (Sorghum bicolor), and (3) the intercropping of ruzigrass and sorghum. Subplots during spring prior to planting soybean were (a) pearl millet (Pennisetum glaucum), (b) sunn hemp (Crotalaria juncea), and (c) forage sorghum (Sorghum bicolor). Results: Soil C and N fractions were affected according to crop residue characteristics of the rotations. Higher soil C stocks in 2012 and 2015 (7 % an average) were observed at 0.2–0.4 m depth by ruzigrass compared to sorghum. High crop residue input with ruzigrass in the fall-winter sequestered 0.61 Mg C ha− 1 yr− 1 at 0-0.1 m soil depth compared with lower C sequestration using grain sorghum (0.29 Mg C ha− 1 yr− 1). Conclusions: The quantity and quality of crop residues impact its retention on soil surface controlling the dynamics of soil C and N fractions and can be considered relevant for soil C sequestration. These aspects could contribute to the mitigation of atmospheric CO2 in crop production systems.Department of Crop Science College of Agricultural Sciences Sao Paulo State University UNESP, 3780, Avenida UniversitariaDepartment of Soil Science College of Agricultural Sciences Sao Paulo State University UNESP, 3780, Avenida UniversitariaDepartment of Crop and Soil Sciences at North Carolina State University USDA Agricultural Research ServiceDepartment of Crop Science College of Agricultural Sciences Sao Paulo State University UNESP, 3780, Avenida UniversitariaDepartment of Soil Science College of Agricultural Sciences Sao Paulo State University UNESP, 3780, Avenida UniversitariaUniversidade Estadual Paulista (Unesp)USDA Agricultural Research ServiceRigon, João Paulo Gonsiorkiewicz [UNESP]Calonego, Juliano Carlos [UNESP]Capuani, Silvia [UNESP]Franzluebbers, Alan J.2021-06-25T10:24:27Z2021-06-25T10:24:27Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s11104-021-04878-0Plant and Soil.1573-50360032-079Xhttp://hdl.handle.net/11449/20597010.1007/s11104-021-04878-02-s2.0-85101744079Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlant and Soilinfo:eu-repo/semantics/openAccess2021-10-22T20:18:32Zoai:repositorio.unesp.br:11449/205970Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:33:46.332168Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
title |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
spellingShingle |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics Rigon, João Paulo Gonsiorkiewicz [UNESP] Conservation management Crop residue quality Cropping systems Soil carbon stock |
title_short |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
title_full |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
title_fullStr |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
title_full_unstemmed |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
title_sort |
Soil organic C affected by dry‐season management of no‐till soybean crop rotations in the tropics |
author |
Rigon, João Paulo Gonsiorkiewicz [UNESP] |
author_facet |
Rigon, João Paulo Gonsiorkiewicz [UNESP] Calonego, Juliano Carlos [UNESP] Capuani, Silvia [UNESP] Franzluebbers, Alan J. |
author_role |
author |
author2 |
Calonego, Juliano Carlos [UNESP] Capuani, Silvia [UNESP] Franzluebbers, Alan J. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) USDA Agricultural Research Service |
dc.contributor.author.fl_str_mv |
Rigon, João Paulo Gonsiorkiewicz [UNESP] Calonego, Juliano Carlos [UNESP] Capuani, Silvia [UNESP] Franzluebbers, Alan J. |
dc.subject.por.fl_str_mv |
Conservation management Crop residue quality Cropping systems Soil carbon stock |
topic |
Conservation management Crop residue quality Cropping systems Soil carbon stock |
description |
Aims: Cover crop species selection for soybean (Glycine max) production under no-tillage (NT) management may affect soil organic C sequestration by altering the quantity and quality of C inputs, thereby affecting cropping system sustainability. If so, the underlying mechanisms for such regulation are still unclear. Methods: We assessed changes in soil C and N fractions at 0-0.1 m depth and soil C stock at 0-0.6 m depth during the last three years of dry-season cover cropping in a soybean production system managed with NT for 9 years on a Rhodic Hapludox in Sao Paulo, Brazil. Dry-season management treatments were repeated yearly in a split-plot scheme. Main plots during the fall-winter were (1) ruzigrass (Urochloa ruziziensis), (2) grain sorghum (Sorghum bicolor), and (3) the intercropping of ruzigrass and sorghum. Subplots during spring prior to planting soybean were (a) pearl millet (Pennisetum glaucum), (b) sunn hemp (Crotalaria juncea), and (c) forage sorghum (Sorghum bicolor). Results: Soil C and N fractions were affected according to crop residue characteristics of the rotations. Higher soil C stocks in 2012 and 2015 (7 % an average) were observed at 0.2–0.4 m depth by ruzigrass compared to sorghum. High crop residue input with ruzigrass in the fall-winter sequestered 0.61 Mg C ha− 1 yr− 1 at 0-0.1 m soil depth compared with lower C sequestration using grain sorghum (0.29 Mg C ha− 1 yr− 1). Conclusions: The quantity and quality of crop residues impact its retention on soil surface controlling the dynamics of soil C and N fractions and can be considered relevant for soil C sequestration. These aspects could contribute to the mitigation of atmospheric CO2 in crop production systems. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:24:27Z 2021-06-25T10:24:27Z 2021-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11104-021-04878-0 Plant and Soil. 1573-5036 0032-079X http://hdl.handle.net/11449/205970 10.1007/s11104-021-04878-0 2-s2.0-85101744079 |
url |
http://dx.doi.org/10.1007/s11104-021-04878-0 http://hdl.handle.net/11449/205970 |
identifier_str_mv |
Plant and Soil. 1573-5036 0032-079X 10.1007/s11104-021-04878-0 2-s2.0-85101744079 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Plant and Soil |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128532149174272 |