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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
26/05/1994 |
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Data da última atualização: |
26/05/1994 |
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Autoria: |
MORGENSTERN, E.; OKON, Y. |
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Afiliação: |
Department of Plant Pathology and Microbiology, The Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel. |
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Título: |
The effect of azospirillun brasilense and auxin on root morphology in seedings of sorghum bicolor x sorghum sudanense. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Arid Soil Research Rehabilitarion., v.1, n., p.115-117, 1987. |
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Idioma: |
Inglês |
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Palavras-Chave: |
auxin; Desenvolvimento; Idoleacetic acid; Inoculation; Morfologia; Root development; Root morphology; Sorghum Sudanense. |
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Thesagro: |
Inoculação; Raiz; Sorghum Bicolor; Sorgo. |
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Thesaurus Nal: |
Azospirillum brasilense; Israel. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00821naa a2200289 a 4500
001 1457982
005 1994-05-26
008 1987 bl --- 0-- u #d
100 1 $aMORGENSTERN, E.
245 $aThe effect of azospirillun brasilense and auxin on root morphology in seedings of sorghum bicolor x sorghum sudanense.
260 $c1987
650 $aAzospirillum brasilense
650 $aIsrael
650 $aInoculação
650 $aRaiz
650 $aSorghum Bicolor
650 $aSorgo
653 $aauxin
653 $aDesenvolvimento
653 $aIdoleacetic acid
653 $aInoculation
653 $aMorfologia
653 $aRoot development
653 $aRoot morphology
653 $aSorghum Sudanense
700 1 $aOKON, Y.
773 $tArid Soil Research Rehabilitarion.$gv.1, n., p.115-117, 1987.
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Registro original: |
Embrapa Soja (CNPSO) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
25/10/2019 |
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Data da última atualização: |
25/10/2019 |
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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: |
CONGIO, G. F. S.; CHIAVEGATO, M. B.; BATALHA, C. D. A.; OLIVEIRA, P. P. A.; MAXWELL, T. M. R.; GREGORINI, P.; SILVA, S. C. da. |
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Afiliação: |
Guilhermo F. S. Congio, USP/ESALQ; Marília B. Chiavegato, USP/ESALQ; Camila D. A. Batalha, USP/ESALQ; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; Thomas M. R. Maxwell, Lincoln University; Pablo Gregorini, Lincoln University; Sila C. Da Silva, USP/ESALQ. |
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Título: |
Strategic grazing management and nitrous oxide fluxes from pasture soils in tropical dairy systems. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 676, p. 493-500, 2019. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2019.04.186 |
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Idioma: |
Inglês |
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Conteúdo: |
Greenhouse gases emissions are considered one of the most important environmental issues of dairy farming systems. Nitrous oxide (N2O) has particular importance owing to its global warming potential and stratospheric ozone depletion. The objective of this study was to investigate the influence of two rotational grazing strategies characterized by two pre-grazing targets (95% and maximum canopy light interception; LI95% and LIMax, respectively) on milk production efficiency and N2O fluxes from soil in a tropical dairy farming system based on elephant grass (Pennisetum purpureum Schum. cv. Cameroon). Results indicated that LI95% pre-grazing target provided more frequent defoliations than LIMax.Water-filled pore space, soil and chamber temperatures were affected by sampling periods (P1 and P2). There was a significant pre-grazing target treatment × sampling period interaction effect on soil NH4 + concentration, which was most likely associated with urinary-N discharge. During P1, there was a greater urinary-N discharge for LI95% than LIMax (26.3 vs. 20.9 kg of urinary-N/paddock) caused by higher stocking rate, which resulted in greater N2O fluxes for LI95%. Inversely, during P2, the soil NH4 + and N2O fluxes were greater for LIMax than LI95%. During this period, the greater urinary-N discharge (46.8 vs. 44.8 kg of urinary N/paddock) was likely associated with longer stocking period for LIMax relative to LI95%, since both treatments had similar stocking rate. Converting hourly N2O fluxes to daily basis and relating to milk production efficiency, LI95% was 40% more efficient than LIMax (0.34 vs. 0.57 g N˗N2O/kg milk·ha). In addition, LI95% pre-grazing target decreased urea-N loading per milk production by 34%. Strategic grazing management represented by the LI95% pre-grazing target allows for intensification of tropical pasture-based dairy systems, enhanced milk production efficiency and decreased N-N2O emission intensity. MenosGreenhouse gases emissions are considered one of the most important environmental issues of dairy farming systems. Nitrous oxide (N2O) has particular importance owing to its global warming potential and stratospheric ozone depletion. The objective of this study was to investigate the influence of two rotational grazing strategies characterized by two pre-grazing targets (95% and maximum canopy light interception; LI95% and LIMax, respectively) on milk production efficiency and N2O fluxes from soil in a tropical dairy farming system based on elephant grass (Pennisetum purpureum Schum. cv. Cameroon). Results indicated that LI95% pre-grazing target provided more frequent defoliations than LIMax.Water-filled pore space, soil and chamber temperatures were affected by sampling periods (P1 and P2). There was a significant pre-grazing target treatment × sampling period interaction effect on soil NH4 + concentration, which was most likely associated with urinary-N discharge. During P1, there was a greater urinary-N discharge for LI95% than LIMax (26.3 vs. 20.9 kg of urinary-N/paddock) caused by higher stocking rate, which resulted in greater N2O fluxes for LI95%. Inversely, during P2, the soil NH4 + and N2O fluxes were greater for LIMax than LI95%. During this period, the greater urinary-N discharge (46.8 vs. 44.8 kg of urinary N/paddock) was likely associated with longer stocking period for LIMax relative to LI95%, since both treatments had similar stocking rate. Converting hourly N... Mostrar Tudo |
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Palavras-Chave: |
Canopy light interception; Dairy farming systems; Elephant grass; Grazed soils; Nitrous oxide fluxes; Soil nitrogen; Sustainable intensification. |
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Thesagro: |
Capim Elefante; Pastagem. |
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Thesaurus NAL: |
Greenhouse gases. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203704/1/StrategicGrazingManagement.pdf
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Marc: |
LEADER 02974naa a2200325 a 4500
001 2113482
005 2019-10-25
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2019.04.186$2DOI
100 1 $aCONGIO, G. F. S.
245 $aStrategic grazing management and nitrous oxide fluxes from pasture soils in tropical dairy systems.$h[electronic resource]
260 $c2019
520 $aGreenhouse gases emissions are considered one of the most important environmental issues of dairy farming systems. Nitrous oxide (N2O) has particular importance owing to its global warming potential and stratospheric ozone depletion. The objective of this study was to investigate the influence of two rotational grazing strategies characterized by two pre-grazing targets (95% and maximum canopy light interception; LI95% and LIMax, respectively) on milk production efficiency and N2O fluxes from soil in a tropical dairy farming system based on elephant grass (Pennisetum purpureum Schum. cv. Cameroon). Results indicated that LI95% pre-grazing target provided more frequent defoliations than LIMax.Water-filled pore space, soil and chamber temperatures were affected by sampling periods (P1 and P2). There was a significant pre-grazing target treatment × sampling period interaction effect on soil NH4 + concentration, which was most likely associated with urinary-N discharge. During P1, there was a greater urinary-N discharge for LI95% than LIMax (26.3 vs. 20.9 kg of urinary-N/paddock) caused by higher stocking rate, which resulted in greater N2O fluxes for LI95%. Inversely, during P2, the soil NH4 + and N2O fluxes were greater for LIMax than LI95%. During this period, the greater urinary-N discharge (46.8 vs. 44.8 kg of urinary N/paddock) was likely associated with longer stocking period for LIMax relative to LI95%, since both treatments had similar stocking rate. Converting hourly N2O fluxes to daily basis and relating to milk production efficiency, LI95% was 40% more efficient than LIMax (0.34 vs. 0.57 g N˗N2O/kg milk·ha). In addition, LI95% pre-grazing target decreased urea-N loading per milk production by 34%. Strategic grazing management represented by the LI95% pre-grazing target allows for intensification of tropical pasture-based dairy systems, enhanced milk production efficiency and decreased N-N2O emission intensity.
650 $aGreenhouse gases
650 $aCapim Elefante
650 $aPastagem
653 $aCanopy light interception
653 $aDairy farming systems
653 $aElephant grass
653 $aGrazed soils
653 $aNitrous oxide fluxes
653 $aSoil nitrogen
653 $aSustainable intensification
700 1 $aCHIAVEGATO, M. B.
700 1 $aBATALHA, C. D. A.
700 1 $aOLIVEIRA, P. P. A.
700 1 $aMAXWELL, T. M. R.
700 1 $aGREGORINI, P.
700 1 $aSILVA, S. C. da
773 $tScience of the Total Environment$gv. 676, p. 493-500, 2019.
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