Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1371/journal.pone.0223937 http://hdl.handle.net/11449/198639 |
Resumo: | Panicum maximum Jacq. 'Mombaça' (Guinea grass) is a C4 forage grass widely used in tropical pastures for cattle feeding. In this study, we evaluated the isolated and combined effects of warming and elevated CO2 concentration [CO2] during summer on nutrient content, nutrient accumulation, nutrient use efficiency and growth of P. maximum under field conditions. Field temperature and [CO2] were controlled by temperature free-air controlled enhancement and free-air CO2 enrichment systems, respectively. We tested two levels of canopy temperature: Ambient temperature (aT) and 2°C above ambient temperature (eT), as well as two levels of atmospheric [CO2]: Ambient [CO2] (aCO2) and 200 ppm above ambient CO2 (eCO2). The experiment was established in a completely randomized design with four replications, in a 2×2 factorial scheme. After pasture establishment, plants were exposed to the treatments during 30 days, with evaluations at 9, 16, 23 and 30 days after the treatments started. Results were dependent on the time of the evaluation, but in the last evaluation (beginning of the grazing), contents of N, K, Mg and S did not change as a function of treatments. However, P decreased as a function of warming under both levels of [CO2], and Ca increased under [eCO2] combined with warming. There was an increase in root dry mass under warming treatment. Combined treatment increased N, Ca and S accumulation without a corresponding increase in the use efficiency of these same nutrients, indicating that the fertiliser dose should increase in the next decades due to climate change. Our short-term results in young and well fertilized pasture suggest that under the combination of [eCO2] and eT conditions, P. maximum productivity will increase and the nutritional requirement for N, Ca and S will also increase. |
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Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum JacqPanicum maximum Jacq. 'Mombaça' (Guinea grass) is a C4 forage grass widely used in tropical pastures for cattle feeding. In this study, we evaluated the isolated and combined effects of warming and elevated CO2 concentration [CO2] during summer on nutrient content, nutrient accumulation, nutrient use efficiency and growth of P. maximum under field conditions. Field temperature and [CO2] were controlled by temperature free-air controlled enhancement and free-air CO2 enrichment systems, respectively. We tested two levels of canopy temperature: Ambient temperature (aT) and 2°C above ambient temperature (eT), as well as two levels of atmospheric [CO2]: Ambient [CO2] (aCO2) and 200 ppm above ambient CO2 (eCO2). The experiment was established in a completely randomized design with four replications, in a 2×2 factorial scheme. After pasture establishment, plants were exposed to the treatments during 30 days, with evaluations at 9, 16, 23 and 30 days after the treatments started. Results were dependent on the time of the evaluation, but in the last evaluation (beginning of the grazing), contents of N, K, Mg and S did not change as a function of treatments. However, P decreased as a function of warming under both levels of [CO2], and Ca increased under [eCO2] combined with warming. There was an increase in root dry mass under warming treatment. Combined treatment increased N, Ca and S accumulation without a corresponding increase in the use efficiency of these same nutrients, indicating that the fertiliser dose should increase in the next decades due to climate change. Our short-term results in young and well fertilized pasture suggest that under the combination of [eCO2] and eT conditions, P. maximum productivity will increase and the nutritional requirement for N, Ca and S will also increase.Department of Soils and Fertilizers São Paulo State University (UNESP) School of Agricultural and Veterinarian SciencesDepartment of Biology FFCLRP São Paulo University (USP)São Paulo Agribusiness Technology Agency (APTA)Department of Soils and Fertilizers São Paulo State University (UNESP) School of Agricultural and Veterinarian SciencesUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)São Paulo Agribusiness Technology Agency (APTA)Carvalho, Juliana Mariano [UNESP]Barreto, Rafael Ferreira [UNESP]De Mello Prado, Renato [UNESP]Habermann, EduardoBranco, Roberto Botelho FerrazMartinez, Carlos Alberto2020-12-12T01:18:18Z2020-12-12T01:18:18Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1371/journal.pone.0223937PLoS ONE, v. 15, n. 3, 2020.1932-6203http://hdl.handle.net/11449/19863910.1371/journal.pone.02239372-s2.0-85081680758Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPLoS ONEinfo:eu-repo/semantics/openAccess2021-10-22T18:05:57Zoai:repositorio.unesp.br:11449/198639Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:44:41.883856Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
title |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
spellingShingle |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq Carvalho, Juliana Mariano [UNESP] |
title_short |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
title_full |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
title_fullStr |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
title_full_unstemmed |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
title_sort |
Elevated CO2 and warming change the nutrient status and use efficiency of Panicum maximum Jacq |
author |
Carvalho, Juliana Mariano [UNESP] |
author_facet |
Carvalho, Juliana Mariano [UNESP] Barreto, Rafael Ferreira [UNESP] De Mello Prado, Renato [UNESP] Habermann, Eduardo Branco, Roberto Botelho Ferraz Martinez, Carlos Alberto |
author_role |
author |
author2 |
Barreto, Rafael Ferreira [UNESP] De Mello Prado, Renato [UNESP] Habermann, Eduardo Branco, Roberto Botelho Ferraz Martinez, Carlos Alberto |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) São Paulo Agribusiness Technology Agency (APTA) |
dc.contributor.author.fl_str_mv |
Carvalho, Juliana Mariano [UNESP] Barreto, Rafael Ferreira [UNESP] De Mello Prado, Renato [UNESP] Habermann, Eduardo Branco, Roberto Botelho Ferraz Martinez, Carlos Alberto |
description |
Panicum maximum Jacq. 'Mombaça' (Guinea grass) is a C4 forage grass widely used in tropical pastures for cattle feeding. In this study, we evaluated the isolated and combined effects of warming and elevated CO2 concentration [CO2] during summer on nutrient content, nutrient accumulation, nutrient use efficiency and growth of P. maximum under field conditions. Field temperature and [CO2] were controlled by temperature free-air controlled enhancement and free-air CO2 enrichment systems, respectively. We tested two levels of canopy temperature: Ambient temperature (aT) and 2°C above ambient temperature (eT), as well as two levels of atmospheric [CO2]: Ambient [CO2] (aCO2) and 200 ppm above ambient CO2 (eCO2). The experiment was established in a completely randomized design with four replications, in a 2×2 factorial scheme. After pasture establishment, plants were exposed to the treatments during 30 days, with evaluations at 9, 16, 23 and 30 days after the treatments started. Results were dependent on the time of the evaluation, but in the last evaluation (beginning of the grazing), contents of N, K, Mg and S did not change as a function of treatments. However, P decreased as a function of warming under both levels of [CO2], and Ca increased under [eCO2] combined with warming. There was an increase in root dry mass under warming treatment. Combined treatment increased N, Ca and S accumulation without a corresponding increase in the use efficiency of these same nutrients, indicating that the fertiliser dose should increase in the next decades due to climate change. Our short-term results in young and well fertilized pasture suggest that under the combination of [eCO2] and eT conditions, P. maximum productivity will increase and the nutritional requirement for N, Ca and S will also increase. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:18:18Z 2020-12-12T01:18:18Z 2020-01-01 |
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/10.1371/journal.pone.0223937 PLoS ONE, v. 15, n. 3, 2020. 1932-6203 http://hdl.handle.net/11449/198639 10.1371/journal.pone.0223937 2-s2.0-85081680758 |
url |
http://dx.doi.org/10.1371/journal.pone.0223937 http://hdl.handle.net/11449/198639 |
identifier_str_mv |
PLoS ONE, v. 15, n. 3, 2020. 1932-6203 10.1371/journal.pone.0223937 2-s2.0-85081680758 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
PLoS ONE |
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 |
|
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1808129241217236992 |