Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands
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/s10705-021-10119-8 http://hdl.handle.net/11449/209134 |
Resumo: | In warm-climate grasslands, litter deposition and decomposition are one of the main pathway of nutrient cycling. The application of nitrogen (N) fertilizer or the inclusion of a legume in such grasslands modifies litter characteristics and chemical composition. This study evaluated how the N supply of palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] pastures affect litter characteristics two years after seeding. Treatments were palisadegrass fertilized or not with N (150 or 0 kg N ha(-1) year(-1)) or mixed with the legume forage peanut (Arachis pintoi cv. Amarillo). The experimental period covered two consecutive rainy seasons. Nitrogen fertilization increased by 43 and 62% the existing litter mass (organic matter, OM), and by 32 and 23% the litter deposition rate compared to unfertilized palisadegrass or legume-grass mixtures, respectively. Both variables were affected by grazing cycle (GC), with low litter deposition rate (14 kg ha(-1) d(-1) OM) and existing litter mass (1390 kg ha(-1) OM) in the GC4 due to low rainfall. Nitrogen fertilized palisadegrass had greater litter N concentration (7.9 +/- 0.4 g kg(-1) OM-C:N ratio 34 +/- 2) than in monoculture or legume-grass mixtures (C:N ratios 45 and 58 +/- 2, respectively). Our results indicated that N fertilization of palisadegrass increased litter accumulation, however, N fertilization was not a key driver of the litter decomposition rate, even though it increased litter N concentration. After 2 years of establishment, the proportion of forage peanut in the litter was still low, reducing the benefits of legume inclusion to enhance litter nutrient cycling in these pastures. |
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Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslandsForage peanutLitter deposition and decompositionLitter qualityNitrogen fertilizationNutrient cyclingPalisadegrassIn warm-climate grasslands, litter deposition and decomposition are one of the main pathway of nutrient cycling. The application of nitrogen (N) fertilizer or the inclusion of a legume in such grasslands modifies litter characteristics and chemical composition. This study evaluated how the N supply of palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] pastures affect litter characteristics two years after seeding. Treatments were palisadegrass fertilized or not with N (150 or 0 kg N ha(-1) year(-1)) or mixed with the legume forage peanut (Arachis pintoi cv. Amarillo). The experimental period covered two consecutive rainy seasons. Nitrogen fertilization increased by 43 and 62% the existing litter mass (organic matter, OM), and by 32 and 23% the litter deposition rate compared to unfertilized palisadegrass or legume-grass mixtures, respectively. Both variables were affected by grazing cycle (GC), with low litter deposition rate (14 kg ha(-1) d(-1) OM) and existing litter mass (1390 kg ha(-1) OM) in the GC4 due to low rainfall. Nitrogen fertilized palisadegrass had greater litter N concentration (7.9 +/- 0.4 g kg(-1) OM-C:N ratio 34 +/- 2) than in monoculture or legume-grass mixtures (C:N ratios 45 and 58 +/- 2, respectively). Our results indicated that N fertilization of palisadegrass increased litter accumulation, however, N fertilization was not a key driver of the litter decomposition rate, even though it increased litter N concentration. After 2 years of establishment, the proportion of forage peanut in the litter was still low, reducing the benefits of legume inclusion to enhance litter nutrient cycling in these pastures.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Sao Paulo State Univ, Dept Anim Sci, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, SP, BrazilEmbrapa Agrobiol, Rodovia BR 465,Km 7, BR-23891000 Seropedica, RJ, BrazilUniv Florida, North Florida Res & Educ Ctr, Marianna, FL 32446 USASao Paulo State Univ, Dept Anim Sci, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, SP, BrazilFAPESP: 2016/11086-1FAPESP: 2017/11274-5FAPESP: 2015/16631-5CNPq: 404169/2013-9SpringerUniversidade Estadual Paulista (Unesp)Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Univ FloridaLonghini, Vanessa Z. [UNESP]Cardoso, Abmael S. [UNESP]Berca, Andressa S. [UNESP]Carvalho, Isabel N. O.Boddey, Robert M.Reis, Ricardo A. [UNESP]Dubeux, Jose C. B.Ruggieri, Ana C. [UNESP]2021-06-25T11:49:29Z2021-06-25T11:49:29Z2021-01-26info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article247-258http://dx.doi.org/10.1007/s10705-021-10119-8Nutrient Cycling In Agroecosystems. Dordrecht: Springer, v. 119, n. 2, p. 247-258, 2021.1385-1314http://hdl.handle.net/11449/20913410.1007/s10705-021-10119-8WOS:000611971300001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengNutrient Cycling In Agroecosystemsinfo:eu-repo/semantics/openAccess2021-10-23T19:23:33Zoai:repositorio.unesp.br:11449/209134Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:23:33Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
title |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
spellingShingle |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands Longhini, Vanessa Z. [UNESP] Forage peanut Litter deposition and decomposition Litter quality Nitrogen fertilization Nutrient cycling Palisadegrass |
title_short |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
title_full |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
title_fullStr |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
title_full_unstemmed |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
title_sort |
Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands |
author |
Longhini, Vanessa Z. [UNESP] |
author_facet |
Longhini, Vanessa Z. [UNESP] Cardoso, Abmael S. [UNESP] Berca, Andressa S. [UNESP] Carvalho, Isabel N. O. Boddey, Robert M. Reis, Ricardo A. [UNESP] Dubeux, Jose C. B. Ruggieri, Ana C. [UNESP] |
author_role |
author |
author2 |
Cardoso, Abmael S. [UNESP] Berca, Andressa S. [UNESP] Carvalho, Isabel N. O. Boddey, Robert M. Reis, Ricardo A. [UNESP] Dubeux, Jose C. B. Ruggieri, Ana C. [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Univ Florida |
dc.contributor.author.fl_str_mv |
Longhini, Vanessa Z. [UNESP] Cardoso, Abmael S. [UNESP] Berca, Andressa S. [UNESP] Carvalho, Isabel N. O. Boddey, Robert M. Reis, Ricardo A. [UNESP] Dubeux, Jose C. B. Ruggieri, Ana C. [UNESP] |
dc.subject.por.fl_str_mv |
Forage peanut Litter deposition and decomposition Litter quality Nitrogen fertilization Nutrient cycling Palisadegrass |
topic |
Forage peanut Litter deposition and decomposition Litter quality Nitrogen fertilization Nutrient cycling Palisadegrass |
description |
In warm-climate grasslands, litter deposition and decomposition are one of the main pathway of nutrient cycling. The application of nitrogen (N) fertilizer or the inclusion of a legume in such grasslands modifies litter characteristics and chemical composition. This study evaluated how the N supply of palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] pastures affect litter characteristics two years after seeding. Treatments were palisadegrass fertilized or not with N (150 or 0 kg N ha(-1) year(-1)) or mixed with the legume forage peanut (Arachis pintoi cv. Amarillo). The experimental period covered two consecutive rainy seasons. Nitrogen fertilization increased by 43 and 62% the existing litter mass (organic matter, OM), and by 32 and 23% the litter deposition rate compared to unfertilized palisadegrass or legume-grass mixtures, respectively. Both variables were affected by grazing cycle (GC), with low litter deposition rate (14 kg ha(-1) d(-1) OM) and existing litter mass (1390 kg ha(-1) OM) in the GC4 due to low rainfall. Nitrogen fertilized palisadegrass had greater litter N concentration (7.9 +/- 0.4 g kg(-1) OM-C:N ratio 34 +/- 2) than in monoculture or legume-grass mixtures (C:N ratios 45 and 58 +/- 2, respectively). Our results indicated that N fertilization of palisadegrass increased litter accumulation, however, N fertilization was not a key driver of the litter decomposition rate, even though it increased litter N concentration. After 2 years of establishment, the proportion of forage peanut in the litter was still low, reducing the benefits of legume inclusion to enhance litter nutrient cycling in these pastures. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:49:29Z 2021-06-25T11:49:29Z 2021-01-26 |
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/s10705-021-10119-8 Nutrient Cycling In Agroecosystems. Dordrecht: Springer, v. 119, n. 2, p. 247-258, 2021. 1385-1314 http://hdl.handle.net/11449/209134 10.1007/s10705-021-10119-8 WOS:000611971300001 |
url |
http://dx.doi.org/10.1007/s10705-021-10119-8 http://hdl.handle.net/11449/209134 |
identifier_str_mv |
Nutrient Cycling In Agroecosystems. Dordrecht: Springer, v. 119, n. 2, p. 247-258, 2021. 1385-1314 10.1007/s10705-021-10119-8 WOS:000611971300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Nutrient Cycling In Agroecosystems |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
247-258 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1799965719983554560 |