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Comparação dos sistemas TDR e ECHO para medida de umidade, em um solo argiloso e em areia - DOI: 10.4025/actasciagron.v26i3.1841
| Content Provider | Semantic Scholar |
|---|---|
| Author | Trintinalha, Marcos Antonio Gonçalves, Antônio Carlos Andrade Tormena, Cássio Antônio Costa, Antonio Folegatti, Marcos Vinícius Freitas, Paulo Rezende, Roberto |
| Copyright Year | 2004 |
| Abstract | TDR technique has been intensively applied around the world to measure volumetric soil water content. Although its good results, this system is rather expensive. Other systems have been developed to measure soil dielectric constant or electric potential under lower cost conditions. ECHO system has been used on some soil conditions with good results. For tropical soils conditions, there is no investigation about its application. This work was carried out to evaluate TDR and ECHO applications on a tropical soil Typic Paleudalf, which presents 73% of clay, commonly found at the Northeast region of Parana , Brazil, and on a “washed sand” material. Mathematic models were fit, by linear regression analyses, to describe relations between soil volumetric water content and apparent soil dielectric constant (Ka) and between soil volumetric water content and electric potential. Results showed that both equipments can be used to adequately estimate soil water content, since careful calibrations were done before use |
| Starting Page | 353 |
| Ending Page | 360 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.4025/actasciagron.v26i3.1841 |
| Volume Number | 26 |
| Alternate Webpage(s) | http://eduem.uem.br/ojs/index.php/ActaSciAgron/article/download/1841/1284 |
| Alternate Webpage(s) | https://doi.org/10.4025/actasciagron.v26i3.1841 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
