Construction and calibration of a bar weighing lysimeter
| dc.creator | Daiane de Cinque Mariano | |
| dc.creator | Rogério Teixeira de Faria | |
| dc.creator | Paulo Sérgio Lourenço de Freita | |
| dc.creator | Bruno Patias Lena | |
| dc.creator | Andre Luiz Johann | |
| dc.date | 2015 | |
| dc.date.accessioned | 2026-07-07T03:55:29Z | |
| dc.description | General ly , standard lysimeters i nclude a lever - load cell scale, which has bec o me expensive compared to new electronic equipment available for experimental purposes. Currently , lysimeters containing weighing bars with up to 4 load cells are econ omically feasible. This goal of this study was to present the construction and calibration of four weighing lysimeters built using two rectangular tanks , with a surface area of 1 . 3 5 m 2 (1 m by 1.35 m) and a depth of 1 . 5 m , loaded on two weighing bars. Each bar had two high accuracy loading cells co nnected to a junction box and a datalogger by a coaxial cable. Calibration of each lysimete r was performed after field installation. The results showed a linear response (R 2 > 0. 999 9 ) of electric signal (mV) to mass increase or decrease (kg) with minimum hysteresis. The m ean absolute error of the mass estimate (0 . 0245 to 0 . 2844 equivalent - mm) and a Wil l mott index between the observed and estimated data (d = 1 . 0000 ) indicate the high precision of the new equipment. The results allow concluding that the lysi meters in this study are appropriate for estimat i ng evapotranspiration and other components of soil water balance. | |
| dc.format | application/pdf | |
| dc.identifier | 1679-9275 | |
| dc.identifier | https://www.redalyc.org/articulo.oa?id=303041016001 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/447589 | |
| dc.language | es | |
| dc.publisher | Universidade Estadual de Maringá | |
| dc.relation | http://www.redalyc.org/revista.oa?id=3030 | |
| dc.rights | Acta Scientiarum. Agronomy | |
| dc.source | Acta Scientiarum. Agronomy (Brasil) Num.3 Vol.37 | |
| dc.subject | Agrociencias | |
| dc.title | Construction and calibration of a bar weighing lysimeter | |
| dc.type | artículo científico |