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| DOI | 10.3390/SOILSYSTEMS6040083 | ||||
| Año | 2022 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
The O'Higgins Region, located in Central Chile, concentrates 40% of the country's maize production, mainly under conventional tillage. This has generated soil physical degradation, modifying water movement on it, which varies even in short distances. In this study, we wanted to evaluate the spatial variability of different physical and hydraulic properties in relation to the agricultural use of Inceptisol. The study was conducted on a farm in Central Chile, in a fallow-maize rotation under conventional tillage. Penetration resistance (PR) was measured by using systematic sampling, defining areas of high and low PR, where soil samples were collected in places with frequent crossing of machinery (+M) and places without crossing (-M) and on topsoil and subsoil, establishing four treatments: +M-topsoil, +M-subsoil, -M-topsoil, and -M-subsoil. Organic matter (OM), texture, bulk density (BD), hydraulic conductivity (K), and hydrophobicity (R) were measured. The soil order was Inceptisol with a sandy-loam texture. The PR ranged from 200,000 to 2,000,000 Pa on topsoil and 600,000 to 2,400,000 Pa in subsoil, and the OM content was higher with a low PR. The K varied from 0.6 to 18 cm h(-1), being greater in depth, as tillage disturbs the topsoil stabilized during the season. A linear relationship was found between the K and R, explaining differences between high- and low-PR sites. There was an association between K-sat with position (subsoil/topsoil) and PR (high/low) that may allow us to use the PR as a proxy for K.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Riveras-Munoz, Nicolas | Hombre |
Universidad de Chile - Chile
UNIV TUBINGEN - Alemania Eberhard Karls Universität Tübingen - Alemania |
| 2 | Silva, Carla | Mujer |
Universidad de Chile - Chile
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| 3 | Salazar, Osvaldo | Hombre |
Universidad de Chile - Chile
|
| 4 | Scholten, Thomas | Hombre |
UNIV TUBINGEN - Alemania
Eberhard Karls Universität Tübingen - Alemania |
| 5 | Seitz, S. | Hombre |
UNIV TUBINGEN - Alemania
Eberhard Karls Universität Tübingen - Alemania |
| 6 | SEGUEL-SEGUEL, OSCAR | Hombre |
Universidad de Chile - Chile
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