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Variability of Hydraulic Properties and Hydrophobicity in a Coarse-Textured Inceptisol Cultivated with Maize in Central Chile
Indexado
WoS WOS:000904402700001
Scopus SCOPUS_ID:85144708262
DOI 10.3390/SOILSYSTEMS6040083
Año 2022
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



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.

Revista



Revista ISSN
2571-8789

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Disciplinas de Investigación



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Scopus
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SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



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
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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Financiamiento



Fuente
Fondo Nacional de Desarrollo Científico y Tecnológico
Fondecyt de Iniciación

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Agradecimientos



Agradecimiento
This research was partially funded by FONDECYT de Iniciacion 2011 grant no. 11110464.
This research was partially funded by FONDECYT de Iniciación 2011 grant no. 11110464.

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