Data/hora: 08/06/2024 13:52:48

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