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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
01/03/2023 |
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Data da última atualização: |
01/03/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BAMBERG, A. L.; SILVEIRA, C. A. P.; FERREIRA, L. H. G.; MILECH, R.; BARTELS, G. K.; PAULETTO, E. A. |
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Afiliação: |
ADILSON LUIS BAMBERG, CPACT; CARLOS AUGUSTO POSSER SILVEIRA, CPACT; LUIS HENRIQUE GULARTE FERREIRA, IFRS; RICARDO MILECH, UNIVERSIDADE FEDERAL DE PELOTAS; GUILHERME KRÜGER BARTELS, UNIVERSIDADE FEDERAL DE PELOTAS; ELOY ANTONIO PAULETTO, UNIVERSIDADE FEDERAL DE PELOTAS. |
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Título: |
Influência da variabilidade espacial da resistência mecânica do solo à penetração no planejamento de experimento de campo. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. 1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
A resistência mecânica do solo à penetração (RP) tende a variar consideravelmente no espaço, podendo afetar os resultados de uma determinada variável resposta em experimentos de campo. Em um experimento de campo cultivado com cana-de-açúcar buscou-se identificar a estrutura e as causas da variabilidade espacial da RP em diferentes camadas do solo até 40 cm de profundidade. |
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Palavras-Chave: |
Penetrógrafo. |
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Thesagro: |
Campo Experimental; Cana de Açúcar; Compactação do Solo; Mecânica do Solo; Pesquisa Agrícola; Planejamento de Pesquisa; Resistência; Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1152014/1/1778-1.pdf
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Marc: |
LEADER 01399nam a2200277 a 4500
001 2152014
005 2023-03-01
008 2011 bl uuuu u00u1 u #d
100 1 $aBAMBERG, A. L.
245 $aInfluência da variabilidade espacial da resistência mecânica do solo à penetração no planejamento de experimento de campo.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. 1 CD-ROM.$c2011
520 $aA resistência mecânica do solo à penetração (RP) tende a variar consideravelmente no espaço, podendo afetar os resultados de uma determinada variável resposta em experimentos de campo. Em um experimento de campo cultivado com cana-de-açúcar buscou-se identificar a estrutura e as causas da variabilidade espacial da RP em diferentes camadas do solo até 40 cm de profundidade.
650 $aCampo Experimental
650 $aCana de Açúcar
650 $aCompactação do Solo
650 $aMecânica do Solo
650 $aPesquisa Agrícola
650 $aPlanejamento de Pesquisa
650 $aResistência
650 $aSolo
653 $aPenetrógrafo
700 1 $aSILVEIRA, C. A. P.
700 1 $aFERREIRA, L. H. G.
700 1 $aMILECH, R.
700 1 $aBARTELS, G. K.
700 1 $aPAULETTO, E. A.
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Embrapa Clima Temperado (CPACT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agropecuária Oeste. Para informações adicionais entre em contato com cpao.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agropecuária Oeste. |
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Data corrente: |
18/12/2014 |
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Data da última atualização: |
18/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SORDI, A.; DIECKOW, J.; BAYER, C.; ALBUQUERQUE, M. A.; PIVA, J. T.; ZANATTA, J. A.; TOMAZI, M.; ROSA, C. M. da; MORAES, A. de. |
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Afiliação: |
ANDRÉ SORDI, Programa de Pós-Graduação em Ciência do Solo, UFPR; Jeferson Dieckow, UFPR; Cimélio Bayer, UFRGS; MÁRCIO AMARAL ALBUQUERQUE, Programa de pós-graduação em Ciência do Solo, UFPR; JONATAS THIAGO PIVA, UFSC; JOSILEIA ACORDI ZANATTA, CNPF; MICHELY TOMAZI, CPAO; CARLA MACHADO DA ROSA, UFRGS; Anibal de Moraes, UFPR. |
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Título: |
Nitrous oxide emission factors for urine and dung patchesin a subtropical Brazilian pastureland. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 190, p. 94-103, 2014. |
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DOI: |
http://dx.doi.org/10.1016/j.agee.2013.09.004 |
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Idioma: |
Inglês |
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Conteúdo: |
tCattle urine and dung (faeces) patches are nitrous oxide (N2O) sources in pasturelands with impactsin the global N2O budget, but specific information about those emissions are still missing for Braziliansubtropical and tropical regions. We conducted a sequence of 3 field-trials (summer, winter and spring,90 days each) to evaluate the N2O emission and emission factor (EF) after the deposition of 3 volumes ofcattle urine or 3 weights of dung (½, 1 and 1½ time the mean urination volume or defecation weight ofFriesian cows) on a free-drained Cambisol of a subtropical pastureland of Brazil. The N2O emission peaks(3198 g N2O-N m−2h−1after urine in summer was the highest) occurred on average 17 ± 9 days afterapplication (DAA), both for urine and dung, and dropped to the background levels 41 ± 10 DAA of urineand 49 ± 10 DAA of dung. The highest contents of NH4+-N in soil (200?250 mg N kg−1) occurred one dayafter urine application and 10?14 days later for dung (100?200 mg N kg−1). Nitrate peaks occurred from23 to 26 DAA in urine patches (∼40?50 mg N kg−1) and 19?50 DAA in dung patches (∼40?50 mg N kg−1).The N2O emission peaks for urine coincided with soil NH4+-N peak in winter but with soil NO3−-N peakin spring. For dung, the emission peak seemed to be more associated with soil NO3−-N than to NH4+-N,either in winter or spring (inorganic-N was not assessed in summer). It was not possible to concludewhether nitrification or denitrification was the dominant process in N2O production, but it seemed thatboth played relevant roles. The EF for urine, averaged across the seasons, diminished with increments inurine volume, from 0.33% in ½ volume to 0.19% in 1½ volume, possibly because urine percolated deeperinto the soil and proportionally less N remained available for N2O production in the top layer. The EFfor dung was 0.19%, 0.12% and 0.14% for ½, 1 and 1½ weight, respectively, showing no clear trend withincrement in dung weight. The lowest EFs for urine and dung occurred in winter, possibly because oflowest temperatures and soil water-filled pore space. The average EF for dung (0.15%) was lower thanthat of urine (0.26%), because urea-N of urine is more readily available for the hydrolysis than organicN forms of dung. This result suggests that these two excreta should be addressed separately in nationalgreenhouse gases inventories or communications. Our results suggest that the default 2% EF proposed inIPCC Guidelines for cattle excreta are overestimated for subtropical Brazil. MenostCattle urine and dung (faeces) patches are nitrous oxide (N2O) sources in pasturelands with impactsin the global N2O budget, but specific information about those emissions are still missing for Braziliansubtropical and tropical regions. We conducted a sequence of 3 field-trials (summer, winter and spring,90 days each) to evaluate the N2O emission and emission factor (EF) after the deposition of 3 volumes ofcattle urine or 3 weights of dung (½, 1 and 1½ time the mean urination volume or defecation weight ofFriesian cows) on a free-drained Cambisol of a subtropical pastureland of Brazil. The N2O emission peaks(3198 g N2O-N m−2h−1after urine in summer was the highest) occurred on average 17 ± 9 days afterapplication (DAA), both for urine and dung, and dropped to the background levels 41 ± 10 DAA of urineand 49 ± 10 DAA of dung. The highest contents of NH4+-N in soil (200?250 mg N kg−1) occurred one dayafter urine application and 10?14 days later for dung (100?200 mg N kg−1). Nitrate peaks occurred from23 to 26 DAA in urine patches (∼40?50 mg N kg−1) and 19?50 DAA in dung patches (∼40?50 mg N kg−1).The N2O emission peaks for urine coincided with soil NH4+-N peak in winter but with soil NO3−-N peakin spring. For dung, the emission peak seemed to be more associated with soil NO3−-N than to NH4+-N,either in winter or spring (inorganic-N was not assessed in summer). It was not possible to concludewhether nitrification or d... Mostrar Tudo |
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Palavras-Chave: |
Fator de emissão; Óxido nitroso; Volume de urina. |
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Thesagro: |
Gado; Nitrato; Pastagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03449naa a2200301 a 4500
001 2003235
005 2014-12-18
008 2014 bl --- 0-- u #d
024 7 $ahttp://dx.doi.org/10.1016/j.agee.2013.09.004$2DOI
100 1 $aSORDI, A.
245 $aNitrous oxide emission factors for urine and dung patchesin a subtropical Brazilian pastureland.$h[electronic resource]
260 $c2014
520 $atCattle urine and dung (faeces) patches are nitrous oxide (N2O) sources in pasturelands with impactsin the global N2O budget, but specific information about those emissions are still missing for Braziliansubtropical and tropical regions. We conducted a sequence of 3 field-trials (summer, winter and spring,90 days each) to evaluate the N2O emission and emission factor (EF) after the deposition of 3 volumes ofcattle urine or 3 weights of dung (½, 1 and 1½ time the mean urination volume or defecation weight ofFriesian cows) on a free-drained Cambisol of a subtropical pastureland of Brazil. The N2O emission peaks(3198 g N2O-N m−2h−1after urine in summer was the highest) occurred on average 17 ± 9 days afterapplication (DAA), both for urine and dung, and dropped to the background levels 41 ± 10 DAA of urineand 49 ± 10 DAA of dung. The highest contents of NH4+-N in soil (200?250 mg N kg−1) occurred one dayafter urine application and 10?14 days later for dung (100?200 mg N kg−1). Nitrate peaks occurred from23 to 26 DAA in urine patches (∼40?50 mg N kg−1) and 19?50 DAA in dung patches (∼40?50 mg N kg−1).The N2O emission peaks for urine coincided with soil NH4+-N peak in winter but with soil NO3−-N peakin spring. For dung, the emission peak seemed to be more associated with soil NO3−-N than to NH4+-N,either in winter or spring (inorganic-N was not assessed in summer). It was not possible to concludewhether nitrification or denitrification was the dominant process in N2O production, but it seemed thatboth played relevant roles. The EF for urine, averaged across the seasons, diminished with increments inurine volume, from 0.33% in ½ volume to 0.19% in 1½ volume, possibly because urine percolated deeperinto the soil and proportionally less N remained available for N2O production in the top layer. The EFfor dung was 0.19%, 0.12% and 0.14% for ½, 1 and 1½ weight, respectively, showing no clear trend withincrement in dung weight. The lowest EFs for urine and dung occurred in winter, possibly because oflowest temperatures and soil water-filled pore space. The average EF for dung (0.15%) was lower thanthat of urine (0.26%), because urea-N of urine is more readily available for the hydrolysis than organicN forms of dung. This result suggests that these two excreta should be addressed separately in nationalgreenhouse gases inventories or communications. Our results suggest that the default 2% EF proposed inIPCC Guidelines for cattle excreta are overestimated for subtropical Brazil.
650 $aGado
650 $aNitrato
650 $aPastagem
653 $aFator de emissão
653 $aÓxido nitroso
653 $aVolume de urina
700 1 $aDIECKOW, J.
700 1 $aBAYER, C.
700 1 $aALBUQUERQUE, M. A.
700 1 $aPIVA, J. T.
700 1 $aZANATTA, J. A.
700 1 $aTOMAZI, M.
700 1 $aROSA, C. M. da
700 1 $aMORAES, A. de
773 $tAgriculture, Ecosystems and Environment$gv. 190, p. 94-103, 2014.
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