Data/hora: 10/06/2024 07:44:45

Provedor de dados: | 63
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
Fonte: | info:eu-repo/semantics/openAccess