fenvs-10-822967.pdf 1,47MB
1000 Titel
  • Soil Use Legacy as Driving Factor for Soil Erosion under Conservation Agriculture
1000 Autor/in
  1. Grahmann, Kathrin |
  2. Rubio, Valentina |
  3. Perez-Bidegain, Mario |
  4. Quincke, Juan Andres |
1000 Erscheinungsjahr 2022
1000 LeibnizOpen
1000 Publikationstyp
  1. Artikel |
1000 Online veröffentlicht
  • 2022-02-28
1000 Erschienen in
1000 Quellenangabe
  • 10:822967
1000 FRL-Sammlung
1000 Copyrightjahr
  • 2022
1000 Lizenz
1000 Verlagsversion
  • |
1000 Ergänzendes Material
  • |
1000 Publikationsstatus
1000 Begutachtungsstatus
1000 Sprache der Publikation
1000 Abstract/Summary
  • Water erosion can cause irreversible depletions in soil quality and crop productivity. The susceptibility of the soil to erosion is affected by current and historical management practices. Historical soil management practices like ploughing or subsoil loosening may lead to irreversible degradations of soils, which in turn increases soil erosion risk. Six “Wischmeier” plots under conservation agriculture, but with different historic treatments regarding soil use and management, were evaluated. These plots were installed in 1984 in Colonia del Sacramento, Uruguay on a Vertic Argiudoll. The objective of this study was to quantify how changes in soil quality, generated by different historical soil use and management over the last 35 years, contribute to current runoff and soil erosion in a cropping system under soil conservation practices using no-till, residue retention and cover crops. Considering differences in soil legacy effects of previous land use, plots were grouped in three treatments with contrasting historic index of agricultural intensification (IAI). The IAI was developed combining the duration of land use under agricultural production and the number and intensity of tillage activity resulting in the treatments: tillage with crop-pasture rotation (TIL_CP), no-tillage under several rotations (NT_Mix) and tillage with continuous cropping (TIL_CROP) with an increasing IAI of 3.5, 7.1 and 11.8, respectively. Rainfall events, runoff water and total, fixed and volatile solids were studied from 2017 to 2019. Soil physical (bulk density, penetration resistance, infiltration rate, aggregate stability), chemical (soil organic carbon (SOC), pH, phosphorous (P-Bray)) and biological properties (particulate organic matter (POM), potentially mineralizable nitrogen (PMN)) were assessed in 2019. Yearly average runoff amounted 209, 579 and 320 mm in 2017, 2018 and 2019, respectively. Yearly average soil losses were 233, 805 and 139 kg/ha with significant differences among years. The lowest soil losses were observed in TIL_CP (231, 615 and 146 kg/ha in 2017, 2018 and 2019, respectively) with lowest IAI of 3.5. Infiltration rate was the lowest in plots with highest IAI. Soil bulk density was highest (1.3 g/cm3) in plots with high IAI. SOC and PMN were lowest in TIL_CROP (3.0% SOC and 34 mg/kg PMN), holding the highest IAI of 11.8. Conservation agriculture minimized soil erosion losses in all plots and years, and erosion was much lower than the maximum tolerable threshold of 7,000 kg/ha for this particular soil. However, in historically intensively tilled and cropped soils, soil quality showed long-term adverse effects pointing towards a reduced resilience of the agricultural system.
1000 Sacherschließung
lokal long-term experiment
lokal Uruguay
lokal soil degradation
lokal RUSLE
lokal intensification index
lokal sediments
lokal runoff
1000 Fächerklassifikation (DDC)
1000 Liste der Beteiligten
1000 (Academic) Editor
1000 Label
1000 Förderer
  1. National Institute of Agricultural Research Uruguay |
1000 Fördernummer
  1. N-23622
1000 Förderprogramm
  1. -
1000 Dateien
1000 Förderung
  1. 1000 joinedFunding-child
    1000 Förderer National Institute of Agricultural Research Uruguay |
    1000 Förderprogramm -
    1000 Fördernummer N-23622
1000 Objektart article
1000 Beschrieben durch
1000 @id frl:6432063.rdf
1000 Erstellt am 2022-03-09T09:17:39.063+0100
1000 Erstellt von 317
1000 beschreibt frl:6432063
1000 Bearbeitet von 317
1000 Zuletzt bearbeitet Wed Mar 09 09:18:33 CET 2022
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1000 Vgl. frl:6432063
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