| Registro completo |
| Provedor de dados: |
Scientia Agricola
|
| País: |
Brazil
|
| Título: |
Gamma-ray beam attenuation as an auxiliary technique for the evaluation of the soil water retention curve
|
| Autores: |
BACCHI,O.O.S.
REICHARDT,K.
OLIVEIRA,J.C.M.
NIELSEN,D.R.
|
| Data: |
1998-01-01
|
| Ano: |
1998
|
| Palavras-chave: |
Gamma attenuation
Gamma radiation
Soil water retention
|
| 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.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000300019
|
| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
|
| Relação: |
10.1590/S0103-90161998000300019
|
| Formato: |
text/html
|
| Fonte: |
Scientia Agricola v.55 n.3 1998
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
