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| Almeida,Eurileny Lucas de; Teixeira,Adunias dos Santos; Silva Filho,Francisco Chagas da; Assis Júnior,Raimundo Nonato de; Leão,Raimundo Alípio de Oliveira. |
| ABSTRACT High cost and long time required to determine a retention curve by the conventional methods of the Richards Chamber and Haines Funnel limit its use; therefore, alternative methods to facilitate this routine are needed. The filter paper method to determine the soil water retention curve was evaluated and compared to the conventional method. Undisturbed samples were collected from five different soils. Using a Haines Funnel and Richards Chamber, moisture content was obtained for tensions of 2; 4; 6; 8; 10; 33; 100; 300; 700; and 1,500 kPa. In the filter paper test, the soil matric potential was obtained from the filter-paper calibration equation, and the moisture subsequently determined based on the gravimetric difference. The van Genuchten model... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Richards Chamber; Haines Funnel; Whatman No. 42 filter paper. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000501344 |
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