Physical assessment of a mollisol under agroecological management in the Quillota valley, mediterranean central Chile
Author
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Casanova Pinto, Manuel
Author
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Ticona, Berthin
Author
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Salazar Guerrero, Osvaldo
Author
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Gratacós, Eduardo
Author
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Pfeiffer Jakob, Marco
Author
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Ávila, Gonzalo
Author
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Tapia Fernández, Yasna
Author
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Seguel, Óscar
Author
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Sabaini, Carlo
Admission date
dc.date.accessioned
2021-07-01T23:36:35Z
Available date
dc.date.available
2021-07-01T23:36:35Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Int. J. Agric. Nat. Resour. 47(3):261-279. 2020
es_ES
Identifier
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10.7764/ijanr.v47i3.2290
Identifier
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https://repositorio.uchile.cl/handle/2250/180363
Abstract
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A number of agroecological practices have been proposed for assessing soil quality. Several
physical soil properties have been shown to be important for determining soil quality by using
the sustainability index (SI) and the cumulative rating approach. The main aim of the study was
to determine the effects of different agroecological managements on the physical properties of a
Mollisol in the Mediterranean central Chile. In addition, some physical properties were selected
to compare the soil quality among different agroecological management practices and highly
mechanized intensive systems by using the SI and cumulative rating approaches. An experimental
field was defined in an area of 3.5 ha in 2014. Four sites with different agroecological practices
were selected in 2019 to assess soil physical properties: rainfed Mediterranean annual prairie - no
tillage (1-S), irrigated perennial prairie with deep-root species - no tillage (2-N), irrigated annual
and perennial prairie - conventional tillage (4-S), irrigated vegetables and flowers - minimum
tillage (4-N); an avocado orchard with traditional management was used as the control. Soil
organic carbon and the following soil physical properties were selected to assess SI and CR:
bulk density, total porosity, void ratio, air capacity, fast-drainage pores, relative field capacity,
hydraulic conductivity, structural stability index and unavailable water pores. The applicability
of the selected physical indicators to the SIs of agroecological management practices compared
with the control was demonstrated. The cumulative rating index (CR) for each land use showed
that all agroecological practices constituted sustainable soil management (25≤CR<30), whereas
the avocado orchard showed the least sustainable management (30≤CR<40), and a change in
soil use is recommended.
es_ES
Patrocinador
dc.description.sponsorship
Programa de Magister en Manejo de Suelos y Aguas (Universidad de Chile)
CERES (Centro Regional de Innovacion Hortofruticola de Valparaiso)
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT
1201497
UK Research & Innovation (UKRI)
Biotechnology and Biological Sciences Research Council (BBSRC)
OECD CRP