Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 105130 |
| Fachzeitschrift | Soil and Tillage Research |
| Jahrgang | 213 |
| Frühes Online-Datum | 3 Juli 2021 |
| Publikationsstatus | Veröffentlicht - Sept. 2021 |
Abstract
In southern Chile, there are over 1.3 million ha of pastures on volcanic ash soils. The climate change scenario and the need to increase yields are forcing farmers to increase irrigated surface areas. This implies an intensified soil use that must be analyzed to prevent soil degradation. Therefore, this study analyzed the impact of initial pasture defoliation (mowing and grazing) and short-term irrigation managements on soil structure dependent properties of a volcanic ash soil under different types of pastures. Field penetration resistance (PR) profiles (0–80 cm), soil water content measurements (0–10 cm) and undisturbed soil samples (0–3 cm) displayed the impact of animal trampling due to repeated loading events. Though this experiment did not determine significant interactions such as pasture x defoliation method x applied load, the early developmental stage of this experiment provided a basis for better understanding deformation processes due to animal trampling when different types of pastures are irrigated in the short-term. The plastic deformation caused by loads higher than precompression stress induced an increase in soil mechanical strength (e.g. Pc increased after the first grazing, but not after mowing), affecting the macropore volume and air permeability. The short-term effects (<2 years) showed the incipient consequences of grazing and irrigation: PR increased due to animal trampling (data dispersion: grazed> mowed plots, showing footprint formation after 8 grazing events) and the higher sum of PR in non-irrigated pastures evidenced the increase of the cohesion between particles/aggregates after drying events. Therefore, it can be expected that in the medium-term (3-4 years), animal trampling could lead to significant soil deformation and a progressive increase in soil mechanical strength near the soil surface.
ASJC Scopus Sachgebiete
- Agrar- und Biowissenschaften (insg.)
- Agronomie und Nutzpflanzenwissenschaften
- Agrar- und Biowissenschaften (insg.)
- Bodenkunde
- Erdkunde und Planetologie (insg.)
- Erdoberflächenprozesse
Ziele für nachhaltige Entwicklung
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in: Soil and Tillage Research, Jahrgang 213, 105130, 09.2021.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Analyzing the impact of grazing and short-term irrigation management on soil mechanical strength of a volcanic ash soil under different types of pastures
AU - Dec, Dorota
AU - Bravo, Sebastián
AU - Horn, Rainer
AU - Uteau, Daniel
AU - Peth, Stephan
AU - Zúñiga, Felipe
AU - Clunes, John
AU - Granda, Stalin
AU - Martínez, Óscar
AU - Balocchi, Óscar
AU - Alonso, Máximo
AU - Dörner, José
N1 - Funding Information: The authors would like to thank the FONDECYT Grant 1181515 for funding this research project. Dr. José Dörner and Dr. Felipe Zúñiga thank the Alexander von Humboldt Foundation for the Grant “Georg Foster Fellowship for Experienced Researchers” that allowed a renewed research stay in the framework of an Alumni Sponsorship 2019 at the Christian Albrechts University in Kiel and the University of Kassel (Germany). José and Felipe are grateful for the hospitality and friendship of the colleagues in Kiel and Kassel. Finally, the authors are grateful for the field and laboratory work conducted by Mónica Díaz, Carol Ricciardi, Tomás Macías and the Project Team.
PY - 2021/9
Y1 - 2021/9
N2 - In southern Chile, there are over 1.3 million ha of pastures on volcanic ash soils. The climate change scenario and the need to increase yields are forcing farmers to increase irrigated surface areas. This implies an intensified soil use that must be analyzed to prevent soil degradation. Therefore, this study analyzed the impact of initial pasture defoliation (mowing and grazing) and short-term irrigation managements on soil structure dependent properties of a volcanic ash soil under different types of pastures. Field penetration resistance (PR) profiles (0–80 cm), soil water content measurements (0–10 cm) and undisturbed soil samples (0–3 cm) displayed the impact of animal trampling due to repeated loading events. Though this experiment did not determine significant interactions such as pasture x defoliation method x applied load, the early developmental stage of this experiment provided a basis for better understanding deformation processes due to animal trampling when different types of pastures are irrigated in the short-term. The plastic deformation caused by loads higher than precompression stress induced an increase in soil mechanical strength (e.g. Pc increased after the first grazing, but not after mowing), affecting the macropore volume and air permeability. The short-term effects (<2 years) showed the incipient consequences of grazing and irrigation: PR increased due to animal trampling (data dispersion: grazed> mowed plots, showing footprint formation after 8 grazing events) and the higher sum of PR in non-irrigated pastures evidenced the increase of the cohesion between particles/aggregates after drying events. Therefore, it can be expected that in the medium-term (3-4 years), animal trampling could lead to significant soil deformation and a progressive increase in soil mechanical strength near the soil surface.
AB - In southern Chile, there are over 1.3 million ha of pastures on volcanic ash soils. The climate change scenario and the need to increase yields are forcing farmers to increase irrigated surface areas. This implies an intensified soil use that must be analyzed to prevent soil degradation. Therefore, this study analyzed the impact of initial pasture defoliation (mowing and grazing) and short-term irrigation managements on soil structure dependent properties of a volcanic ash soil under different types of pastures. Field penetration resistance (PR) profiles (0–80 cm), soil water content measurements (0–10 cm) and undisturbed soil samples (0–3 cm) displayed the impact of animal trampling due to repeated loading events. Though this experiment did not determine significant interactions such as pasture x defoliation method x applied load, the early developmental stage of this experiment provided a basis for better understanding deformation processes due to animal trampling when different types of pastures are irrigated in the short-term. The plastic deformation caused by loads higher than precompression stress induced an increase in soil mechanical strength (e.g. Pc increased after the first grazing, but not after mowing), affecting the macropore volume and air permeability. The short-term effects (<2 years) showed the incipient consequences of grazing and irrigation: PR increased due to animal trampling (data dispersion: grazed> mowed plots, showing footprint formation after 8 grazing events) and the higher sum of PR in non-irrigated pastures evidenced the increase of the cohesion between particles/aggregates after drying events. Therefore, it can be expected that in the medium-term (3-4 years), animal trampling could lead to significant soil deformation and a progressive increase in soil mechanical strength near the soil surface.
KW - Andisols
KW - Cattle grazing
KW - Cyclic loading
KW - Field water content/penetration resistance profiles
KW - Pore functions
KW - Soil mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85109015324&partnerID=8YFLogxK
U2 - 10.1016/j.still.2021.105130
DO - 10.1016/j.still.2021.105130
M3 - Article
AN - SCOPUS:85109015324
VL - 213
JO - Soil and Tillage Research
JF - Soil and Tillage Research
SN - 0167-1987
M1 - 105130
ER -