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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/02/2009 |
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Data da última atualização: |
28/09/2018 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
ROCHA, F. E. de C.; ALBUQUERQUE, F. J. B. de; MARCELINO, M. Q. dos S.; DIAS, M. R.; PINHEIRO, J. DE Q. |
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Afiliação: |
FRANCISCO EDUARDO DE CASTRO ROCHA, CPAC; Francisco José Batista de Albuquerque; Maria Quitéria dos Santos Marcelino.; MARDONIO RIQUE DIAS; JOSÉ DE QUEIROZ PINHEIRO. |
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Título: |
Aplicação da análise de conteúdo na perspectiva de Bardin em uma aproximação avaliativa do Pronaf-PB. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2008. |
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Série: |
(Embrapa Cerrados. Boletim de Pesquisa e Desenvolvimento, 201). |
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Idioma: |
Português |
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Palavras-Chave: |
PRONAF; Psicologia social; Técnica de pesquisa. |
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Thesagro: |
Agricultura Familiar; Método de Pesquisa. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2010/30241/1/bolpd-201.pdf
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Marc: |
LEADER 00727nam a2200217 a 4500
001 1571837
005 2018-09-28
008 2008 bl uuuu 00u1 u #d
100 1 $aROCHA, F. E. de C.
245 $aAplicação da análise de conteúdo na perspectiva de Bardin em uma aproximação avaliativa do Pronaf-PB.
260 $aPlanaltina, DF: Embrapa Cerrados$c2008
490 $a(Embrapa Cerrados. Boletim de Pesquisa e Desenvolvimento, 201).
650 $aAgricultura Familiar
650 $aMétodo de Pesquisa
653 $aPRONAF
653 $aPsicologia social
653 $aTécnica de pesquisa
700 1 $aALBUQUERQUE, F. J. B. de
700 1 $aMARCELINO, M. Q. dos S.
700 1 $aDIAS, M. R.
700 1 $aPINHEIRO, J. DE Q.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
21/12/2022 |
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Data da última atualização: |
21/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
RESENDE, R. S.; CINTRA, F. L. D.; PACHECO, E. P.; AMORIM, J. R. A. de; BRANT, R. da S.; SILVA, S. M. da. |
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Afiliação: |
RONALDO SOUZA RESENDE, CPATC; FERNANDO LUIS DULTRA CINTRA, CPATC; EDSON PATTO PACHECO, CPATC; JULIO ROBERTO ARAUJO DE AMORIM, CPATC; RENATA DA SILVA BOMFIM GOMES, CPATC; SANDRA M. DA SILVA, USINA CORURIPE. |
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Título: |
Soil penetration resistance and Sugarcane rooting under subsuperficial drip irrigation levels. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Sugar Tech, 2022. |
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DOI: |
https://doi.org/10.1007/s12355-022-01186-4 |
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Idioma: |
Inglês |
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Conteúdo: |
Knowledge of the soil water regime in a dynamic equilibrium condition (steady state) of the emitter?soil?plant system is essential to evaluate the adopted irrigation management, aiming to maximize the water use efficiency in irrigation. Thus, our objective was to determine the integrated effect of four irrigation levels on the soil moisture (θv) distribution pattern, mechanical soil penetration resistance (PR), and sugarcane rooting. Irrigation levels were established based on the percentage of reference evapotranspiration (ETo), as follows: 40% (W1), 70% (W2), 100% (W3), and 130% (W4) of ETo. From the soil moisture profile and PR versus θv regression models, PR profiles for each irrigation level were estimated. At the end of the crop cycle, trenches were opened to assess sugarcane root system. According to the results, the water dynamic in the soil profile resulted in a soil-wetting pattern that did not match the sugarcane rooting profile. For treatments W3 and W4 the wetting pattern indicated water loss through deep percolation. For all treatments and considering the entire soil profile, the PR values ranged from < 2 to 10 MPa. Also, the roots were superficially spread and limited to the first 0.35 m in depth for all irrigation depths applied. Although the soil wetting by irrigation reduced the strength of the cohesive layer, this reduction was insufficient to allow the deepening of plant roots. The su garcane root development was limited to the region of the soil profile defined by a PR value approximately equal to 2.0 MPa. MenosKnowledge of the soil water regime in a dynamic equilibrium condition (steady state) of the emitter?soil?plant system is essential to evaluate the adopted irrigation management, aiming to maximize the water use efficiency in irrigation. Thus, our objective was to determine the integrated effect of four irrigation levels on the soil moisture (θv) distribution pattern, mechanical soil penetration resistance (PR), and sugarcane rooting. Irrigation levels were established based on the percentage of reference evapotranspiration (ETo), as follows: 40% (W1), 70% (W2), 100% (W3), and 130% (W4) of ETo. From the soil moisture profile and PR versus θv regression models, PR profiles for each irrigation level were estimated. At the end of the crop cycle, trenches were opened to assess sugarcane root system. According to the results, the water dynamic in the soil profile resulted in a soil-wetting pattern that did not match the sugarcane rooting profile. For treatments W3 and W4 the wetting pattern indicated water loss through deep percolation. For all treatments and considering the entire soil profile, the PR values ranged from < 2 to 10 MPa. Also, the roots were superficially spread and limited to the first 0.35 m in depth for all irrigation depths applied. Although the soil wetting by irrigation reduced the strength of the cohesive layer, this reduction was insufficient to allow the deepening of plant roots. The su garcane root development was limited to the regio... Mostrar Tudo |
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Thesagro: |
Aeração do Solo; Cana de Açúcar; Compactação do Solo; Enraizamento; Irrigação; Retenção de Água no Solo. |
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Thesaurus NAL: |
Root systems; Roots; Soil; Soil air; Sugarcane. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150178/1/Soil-penetration-resistance.pdf
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Marc: |
LEADER 02492naa a2200325 a 4500
001 2150178
005 2022-12-21
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s12355-022-01186-4$2DOI
100 1 $aRESENDE, R. S.
245 $aSoil penetration resistance and Sugarcane rooting under subsuperficial drip irrigation levels.$h[electronic resource]
260 $c2022
520 $aKnowledge of the soil water regime in a dynamic equilibrium condition (steady state) of the emitter?soil?plant system is essential to evaluate the adopted irrigation management, aiming to maximize the water use efficiency in irrigation. Thus, our objective was to determine the integrated effect of four irrigation levels on the soil moisture (θv) distribution pattern, mechanical soil penetration resistance (PR), and sugarcane rooting. Irrigation levels were established based on the percentage of reference evapotranspiration (ETo), as follows: 40% (W1), 70% (W2), 100% (W3), and 130% (W4) of ETo. From the soil moisture profile and PR versus θv regression models, PR profiles for each irrigation level were estimated. At the end of the crop cycle, trenches were opened to assess sugarcane root system. According to the results, the water dynamic in the soil profile resulted in a soil-wetting pattern that did not match the sugarcane rooting profile. For treatments W3 and W4 the wetting pattern indicated water loss through deep percolation. For all treatments and considering the entire soil profile, the PR values ranged from < 2 to 10 MPa. Also, the roots were superficially spread and limited to the first 0.35 m in depth for all irrigation depths applied. Although the soil wetting by irrigation reduced the strength of the cohesive layer, this reduction was insufficient to allow the deepening of plant roots. The su garcane root development was limited to the region of the soil profile defined by a PR value approximately equal to 2.0 MPa.
650 $aRoot systems
650 $aRoots
650 $aSoil
650 $aSoil air
650 $aSugarcane
650 $aAeração do Solo
650 $aCana de Açúcar
650 $aCompactação do Solo
650 $aEnraizamento
650 $aIrrigação
650 $aRetenção de Água no Solo
700 1 $aCINTRA, F. L. D.
700 1 $aPACHECO, E. P.
700 1 $aAMORIM, J. R. A. de
700 1 $aBRANT, R. da S.
700 1 $aSILVA, S. M. da
773 $tSugar Tech, 2022.
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