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| Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
08/12/1999 |
Data da última atualização: |
05/12/2012 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
MATTOS, P. P. de; SEITZ, R. A.; BOLZON de MUNIZ, G. I. |
Afiliação: |
Patricia Povoa de Mattos, pesquisadora da Embrapa Florestas. |
Título: |
Identification of annual growth rings based on periodical shoot growth. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
In: WIMMER, R.; VETTER, R.E. (Ed.). Tree ring analysis: biological, methodological, and environmental aspects. Wallingford: CABI, 1999. |
Volume: |
v. 1 |
Páginas: |
p. 139-145 |
Idioma: |
Inglês |
Palavras-Chave: |
Conifera; Coniferales. |
Thesagro: |
Ecologia Florestal. |
Thesaurus Nal: |
forest ecology. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00679naa a2200205 a 4500 001 1303819 005 2012-12-05 008 1999 bl uuuu u00u1 u #d 100 1 $aMATTOS, P. P. de 245 $aIdentification of annual growth rings based on periodical shoot growth.$h[electronic resource] 260 $c1999 300 $ap. 139-145 v. 1 490 $vv. 1 650 $aforest ecology 650 $aEcologia Florestal 653 $aConifera 653 $aConiferales 700 1 $aSEITZ, R. A. 700 1 $aBOLZON de MUNIZ, G. I. 773 $tIn: WIMMER, R.; VETTER, R.E. (Ed.). Tree ring analysis: biological, methodological, and environmental aspects. Wallingford: CABI, 1999.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
15/06/2022 |
Data da última atualização: |
15/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
GUIMARÃES, B. C.; GOMES, F. de K.; HOMEM, B. G. C.; LIMA, I. B. G. de; SPASIANI, P. S.; BODDEY, R. M.; ALVES, B. J. R.; CASAGRANDE, D. R. |
Afiliação: |
BIANCA C. GUIMARÃES, UFLA; FERNANDA DE KÁSSIA GOMES, UFMS; BRUNO G. C. HOMEM, BOLSISTA EMBRAPA AGROBIOLOGIA; ITALO BRAZ G. DE LIMA, UFLA; PAOLA P. SPASIANI, UFLA; ROBERT MICHAEL BODDEY, CNPAB; BRUNO JOSE RODRIGUES ALVES, CNPAB; DANIEL RUME CASAGRANDE, UFLA. |
Título: |
Emissions of N2O and NH3 from cattle excreta in grass pastures fertilized with N or mixed with a forage legume. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 122, p. 325?346, 2022. |
ISSN: |
1385-1314 |
DOI: |
https://doi.org/10.1007/s10705-022-10207-3 |
Idioma: |
Inglês |
Conteúdo: |
Pasture is the major livestock production system in Brazil, and nitrogen (N) excretion by cattle has been identified as an important source of nitrous oxide (N2O) and ammonia (NH3). This study assessed long-term N2O and NH3 emissions from cattle urine and dung deposited on three pasture systems: (1) palisadegrass (Brachiaria brizantha) monoculture without N-fertilizer (GRASS); (2) palisadegrass monoculture fertilized with 150 kg N ha?1 (GRASS?+?N); (3) palisadegrass mixed with Arachis pintoi without N-fertilizer application (GRASS?+?LEGUME). Two trials were carried out, one beginning in the dry season and the other in the rainy season. Urine N2O emission factors (EFN2O) were the lowest for the GRASS pasture (0.41% vs. 0.56 and 0.62% for the GRASS?+?N and GRASS?+?LEGUME pastures, respectively). There was a tendency of lower EFN2O in for dung from cattle grazing the GRASS?+?LEGUME pasture (0.11% vs. 0.20% for the GRASS and GRASS?+?N pastures; P?0.10). Excreta-N lost by NH3 volatilization (EFNH3) was highest for urine under GRASS?+?N pasture (12.6% vs. 5.9 and 4.7% for the GRASS?+?LEGUME and GRASS pastures, respectively). These figures are within the ranges reported in the IPCC 2019 guidelines but consistently in the lower range, probably due to the tropical climate. The lowest urine EFN2O estimated for the GRASS pasture showed that N fertilization increased N2O emissions from urine patches. The lower EFN2O for dung from GRASS?+?LEGUME pastures and the emissions avoided associated with N fertilizer use indicate that the mixed grass/legume pasture is a strategy to mitigate greenhouse gas emissions when pasture intensification requires N addition. MenosPasture is the major livestock production system in Brazil, and nitrogen (N) excretion by cattle has been identified as an important source of nitrous oxide (N2O) and ammonia (NH3). This study assessed long-term N2O and NH3 emissions from cattle urine and dung deposited on three pasture systems: (1) palisadegrass (Brachiaria brizantha) monoculture without N-fertilizer (GRASS); (2) palisadegrass monoculture fertilized with 150 kg N ha?1 (GRASS?+?N); (3) palisadegrass mixed with Arachis pintoi without N-fertilizer application (GRASS?+?LEGUME). Two trials were carried out, one beginning in the dry season and the other in the rainy season. Urine N2O emission factors (EFN2O) were the lowest for the GRASS pasture (0.41% vs. 0.56 and 0.62% for the GRASS?+?N and GRASS?+?LEGUME pastures, respectively). There was a tendency of lower EFN2O in for dung from cattle grazing the GRASS?+?LEGUME pasture (0.11% vs. 0.20% for the GRASS and GRASS?+?N pastures; P?0.10). Excreta-N lost by NH3 volatilization (EFNH3) was highest for urine under GRASS?+?N pasture (12.6% vs. 5.9 and 4.7% for the GRASS?+?LEGUME and GRASS pastures, respectively). These figures are within the ranges reported in the IPCC 2019 guidelines but consistently in the lower range, probably due to the tropical climate. The lowest urine EFN2O estimated for the GRASS pasture showed that N fertilization increased N2O emissions from urine patches. The lower EFN2O for dung from GRASS?+?LEGUME pastures and the emissions avoided assoc... Mostrar Tudo |
Palavras-Chave: |
Warm season legum. |
Thesagro: |
Brachiaria. |
Thesaurus NAL: |
Arachis pintoi; Greenhouse gas emissions; Tropical pastures. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02580naa a2200289 a 4500 001 2144122 005 2022-06-15 008 2022 bl uuuu u00u1 u #d 022 $a1385-1314 024 7 $ahttps://doi.org/10.1007/s10705-022-10207-3$2DOI 100 1 $aGUIMARÃES, B. C. 245 $aEmissions of N2O and NH3 from cattle excreta in grass pastures fertilized with N or mixed with a forage legume.$h[electronic resource] 260 $c2022 520 $aPasture is the major livestock production system in Brazil, and nitrogen (N) excretion by cattle has been identified as an important source of nitrous oxide (N2O) and ammonia (NH3). This study assessed long-term N2O and NH3 emissions from cattle urine and dung deposited on three pasture systems: (1) palisadegrass (Brachiaria brizantha) monoculture without N-fertilizer (GRASS); (2) palisadegrass monoculture fertilized with 150 kg N ha?1 (GRASS?+?N); (3) palisadegrass mixed with Arachis pintoi without N-fertilizer application (GRASS?+?LEGUME). Two trials were carried out, one beginning in the dry season and the other in the rainy season. Urine N2O emission factors (EFN2O) were the lowest for the GRASS pasture (0.41% vs. 0.56 and 0.62% for the GRASS?+?N and GRASS?+?LEGUME pastures, respectively). There was a tendency of lower EFN2O in for dung from cattle grazing the GRASS?+?LEGUME pasture (0.11% vs. 0.20% for the GRASS and GRASS?+?N pastures; P?<?0.10). Excreta-N lost by NH3 volatilization (EFNH3) was highest for urine under GRASS?+?N pasture (12.6% vs. 5.9 and 4.7% for the GRASS?+?LEGUME and GRASS pastures, respectively). These figures are within the ranges reported in the IPCC 2019 guidelines but consistently in the lower range, probably due to the tropical climate. The lowest urine EFN2O estimated for the GRASS pasture showed that N fertilization increased N2O emissions from urine patches. The lower EFN2O for dung from GRASS?+?LEGUME pastures and the emissions avoided associated with N fertilizer use indicate that the mixed grass/legume pasture is a strategy to mitigate greenhouse gas emissions when pasture intensification requires N addition. 650 $aArachis pintoi 650 $aGreenhouse gas emissions 650 $aTropical pastures 650 $aBrachiaria 653 $aWarm season legum 700 1 $aGOMES, F. de K. 700 1 $aHOMEM, B. G. C. 700 1 $aLIMA, I. B. G. de 700 1 $aSPASIANI, P. S. 700 1 $aBODDEY, R. M. 700 1 $aALVES, B. J. R. 700 1 $aCASAGRANDE, D. R. 773 $tNutrient Cycling in Agroecosystems$gv. 122, p. 325?346, 2022.
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