Registro completo |
Provedor de dados: |
Scientia Agricola
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País: |
Brazil
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Título: |
Gamma-ray beam attenuation as an auxiliary technique for the evaluation of the soil water retention curve
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Autores: |
BACCHI,O.O.S.
REICHARDT,K.
OLIVEIRA,J.C.M.
NIELSEN,D.R.
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Data: |
1998-01-01
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Ano: |
1998
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Palavras-chave: |
Gamma attenuation
Gamma radiation
Soil water retention
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Resumo: |
The soil water retention curve is fundamental for the hydraulic characterization of a soil and has many applications in agricultural research as well as in practical agriculture. A new procedure for soil moisture and soil bulk density evaluation inside closed pressure chambers through gamma-ray beam attenuation is presented. The proposed procedure presents several advantages in relation to the traditional process: avoids the need of continuous sample manipulation; minimizes the problem of hysteresis; allows a more precise evaluation of soil moisture by taking into account changes of soil bulk density due to swelling or shrinking on addition or removal of water; allows frequent evaluation of soil moisture without the need of opening the pressure chamber; allows a more precise judgement of equilibrium; reduces drastically the time of the determination of the retention curve and allows easy automation of data acquisition by a computer.
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Tipo: |
Info:eu-repo/semantics/article
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Idioma: |
Inglês
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Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000300019
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Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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Relação: |
10.1590/S0103-90161998000300019
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Formato: |
text/html
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Fonte: |
Scientia Agricola v.55 n.3 1998
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Direitos: |
info:eu-repo/semantics/openAccess
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