Nitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniv Florida-
Autor(es): dc.creatorLonghini, Vanessa Z. [UNESP]-
Autor(es): dc.creatorCardoso, Abmael S. [UNESP]-
Autor(es): dc.creatorBerca, Andressa S. [UNESP]-
Autor(es): dc.creatorCarvalho, Isabel N. O.-
Autor(es): dc.creatorBoddey, Robert M.-
Autor(es): dc.creatorReis, Ricardo A. [UNESP]-
Autor(es): dc.creatorDubeux, Jose C. B.-
Autor(es): dc.creatorRuggieri, Ana C. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:55:29Z-
Data de disponibilização: dc.date.available2022-02-22T00:55:29Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-25-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10705-021-10119-8-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209134-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209134-
Descrição: dc.descriptionIn 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.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)-
Descrição: dc.descriptionSao Paulo State Univ, Dept Anim Sci, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, SP, Brazil-
Descrição: dc.descriptionEmbrapa Agrobiol, Rodovia BR 465,Km 7, BR-23891000 Seropedica, RJ, Brazil-
Descrição: dc.descriptionUniv Florida, North Florida Res & Educ Ctr, Marianna, FL 32446 USA-
Descrição: dc.descriptionSao Paulo State Univ, Dept Anim Sci, Via Acesso Prof Paulo Donato Castellane, BR-14884900 Jaboticabal, SP, Brazil-
Descrição: dc.descriptionFAPESP: 2016/11086-1-
Descrição: dc.descriptionFAPESP: 2017/11274-5-
Descrição: dc.descriptionFAPESP: 2015/16631-5-
Descrição: dc.descriptionCNPq: 404169/2013-9-
Formato: dc.format247-258-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Relação: dc.relationNutrient Cycling In Agroecosystems-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectForage peanut-
Palavras-chave: dc.subjectLitter deposition and decomposition-
Palavras-chave: dc.subjectLitter quality-
Palavras-chave: dc.subjectNitrogen fertilization-
Palavras-chave: dc.subjectNutrient cycling-
Palavras-chave: dc.subjectPalisadegrass-
Título: dc.titleNitrogen fertilizer increased litter deposition and litter N in warm-climate grasslands-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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