Consolidation and surface sealing of nine harrowed Swedish soils

Sandin, Maria; Jarvis, Nicholas; Larsbo, Mats

doi:10.1016/j.still.2018.03.017

Cited by 17 publications

(6 citation statements)

References 39 publications

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“…By simulating over hundreds of years, we aimed to investigate pesticide transport under a very broad range of realistic weather conditions and thereby to focus on the effects of wheeling and track loosening. To account for weathering effects after harrowing, that is surface consolidation and sealing, the simulation was run with a bulk density of 1.46 instead of 1.21 g/cm 3 in the surface layer based on the study of Sandin, Jarvis, and Larsbo (2018) and with a K s 50% lower than measured immediately after tillage in accordance to former measurements (Petersen et al, 2008). The total amount of pesticides, including major degradation products (in g/ha), transported to drain lines within a 3-month period after seedbed preparation (10 April-10 July), was determined for each of the 334 years when sugar beet was grown in the rotation and pesticides applied.…”

Section: Field Management and Weather Datamentioning

confidence: 99%

Wheel track loosening can reduce the risk of pesticide leaching to surface waters

Vuaille

Daraghmeh

Abrahamsen

et al. 2020

Soil Use and Management

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Compaction of agricultural topsoil in wheel tracks has negative impacts on structure, structural stability and permeability of the uppermost soil layers (Daraghmeh et al., 2019). Soil compaction decreases total pore space and hence the total water capacity of soil. For a wide range of tensions, unsaturated water content at hydraulic equilibrium is typically larger in compacted soil than in non-compacted soil (Reicosky, Voorhees, & Radke, 1981). This further reduces air capacity and hence the space remaining to absorb rainwater and retain it under tension. Increased pore tortuosity and decreased volume of large and air-filled pores in compacted soil may also severely reduce the soil's infiltrability (Ankeny, Kaspar, & Horton, 1990). The effect is reported to be most pronounced on tilled and structurally unstable soil, which may partly be

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Section: Field Management and Weather Datamentioning

confidence: 99%

Wheel track loosening can reduce the risk of pesticide leaching to surface waters

Vuaille

Daraghmeh

Abrahamsen

et al. 2020

Soil Use and Management

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“…It is a known fact that tillage changes the topsoil characteristics, generally leading to a decrease in bulk soil density and an increase in the soil aggregate size and macroporosity. The soil aggregate arrangement is unstable, so the topsoil eventually reverts to its former state [3,46,66].…”

Section: Temporal Variability Of Physical Properties Of the Soilmentioning

confidence: 99%

Estimates of Tillage and Rainfall Effects on Unsaturated Hydraulic Conductivity in a Small Central European Agricultural Catchment

Zumr

Jeřábek

Klípa

et al. 2019

Water

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In arable land, topsoil is exposed to structural changes during each growing season due to agricultural management, climate, the kinetic energy of rainfall, crop and root growth. The shape, size, and spatial distributions of soil aggregates are considerably altered during the season and thus affect water infiltration and the soil moisture regime. Agricultural topsoils are prone to soil compaction and surface sealing which result in soil structure degradation and disconnection of preferential pathways. To study topsoil infiltration properties over time, near-saturated hydraulic conductivity of topsoil was repeatedly assessed in a catchment in central Bohemia (Czech Republic) during three consecutive growing seasons, using a recently developed automated tension minidisk infiltrometer (MultiDisk). Seasonal variability of soil bulk density and saturated water content was observed as topsoil consolidated between seedbed preparations. Topsoil unsaturated hydraulic conductivity was lower in spring and increased in the summer months during two seasons, and the opposite trend was observed during one season. Temporal unsaturated hydraulic conductivity variability was higher than spatial variability. Cumulative kinetic energy of rainfall, causing a seasonal decrease in soil macroporosity and unsaturated hydraulic conductivity, was not a statistically significant predictor.

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“…Rain falling on bare soil results in the breakdown of soil particles. Splashing of the dispersed particles causes pore obstruction and the formation of a surface seal or a superficial crust [5,17].…”

Section: Introductionmentioning

confidence: 99%

Quantification of water erosion and characterization of surface sealing in Ultisols in semiarid areas in Brazil

Rodrigues

Santos

Souza

et al. 2021

DYNA

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The lack of cover is one of the main accelerators of soil degradation. Without protection and exposed to rainfall, the soil breaks the particles, causing surface sealing, making infiltration difficult. This study characterizes surface sealing and hydraulic erosion in Ultisols of the Alto Ipanema Basin. Eight erosion plots were established under the treatments: bare soil and soil with Brachiaria decumbens mulch. Three rain events were simulated at 24-hour intervals, with an intensity of 54.63 mmh-1. After each simulation, the surface micromorphology and the amount of soil lost were investigated. The use of mulch reduced runoff by 42% and the loss of soil and the rate of disaggregation was reduced by 70% on average. Infiltration was increased by 242%. Mulch was effective in preserving soil porosity and microstructure for the first simulated rainfall event (0 h), but was not observed in the second (24 h) and third (48 h) rainfall events.

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Consolidation and surface sealing of nine harrowed Swedish soils

Cited by 17 publications

References 39 publications

Wheel track loosening can reduce the risk of pesticide leaching to surface waters

Wheel track loosening can reduce the risk of pesticide leaching to surface waters

Estimates of Tillage and Rainfall Effects on Unsaturated Hydraulic Conductivity in a Small Central European Agricultural Catchment

Quantification of water erosion and characterization of surface sealing in Ultisols in semiarid areas in Brazil

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