Temporal variability of structure and hydraulic properties of topsoil of three soil types

Jirku, Veronika; Kodešová, Radka; Nikodem, Antonín; Mühlhanselová, Marcela; Žigová, Anna

doi:10.1016/j.geoderma.2013.03.024

Cited by 87 publications

(60 citation statements)

References 58 publications

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“…A strong positive correlation was noticed between WSA-2 h (or WSA-6 h) and CaCO 3 , especially in the surface soil layer (R = 0.824 for WSA-2 h or R = 0.839 for WSA-6 h). The apparent negative correlation between WSA-2 h and SOC is indeed the result of a strong negative correlation between SOC and CaCO 3 (from R = A similar correlation was found by Jirků et al (2013). Several authors (Goulet et al 2004, Bronick and Lal 2005, Cantón et al 2009) reported that soil aggregate stability is generally positively correlated with SOM, that is why the application of organic fertilisers (e.g.…”

supporting

confidence: 52%

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

Muršec¹,

Lévêque²,

Chaussod³

et al. 2018

PLANT SOIL ENVIRON

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The impact of drip irrigation on structural stability of soil aggregates was studied in soils of an apple (Malus domestica Borkh.) orchard, developed on marl. The field study was carried out in a sloping (20%) terrain in the north-eastern Slovenia at three slope positions (upslope, mid-slope and downslope), involving a comparison of irrigated versus non-irrigated situations after 6 years of drip irrigation practice. Structural stability was studied in three soil layers (0–5, 5–15 and 15–30 cm) at the end of the irrigation season (in September). In the same samples, soil organic carbon, total carbonates and soil moisture contents were determined. Drip irrigation significantly reduced structural stability and soil organic carbon in the surface soil layer (0–5 cm), while total carbonates increased. Based on the whole set of data, structural stability was strongly positively correlated with total carbonates and negatively correlated with soil organic carbon. This means that the effect of higher level of organic matter mineralisation on structural stability, due to irrigation, is counterbalanced by the increase of total carbonates content in the fine textured calcareous soils. Thus, a negative effect of irrigation on soil organic carbon had less destructive consequences on structural stability than expected.

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supporting

confidence: 52%

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

Muršec¹,

Lévêque²,

Chaussod³

et al. 2018

PLANT SOIL ENVIRON

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“…Soil aggregates in the Bt1 and Bt2 horizons were covered by clay and organic matter coatings. The coatings development in these horizons has been affected by the agricultural management (Jirků et al, 2013;Kodešová et al, 2011) causing frequent aggregate destruction in the top soil and accelerated clay migration within the soil profile. Studies by Kodešová et al (2009) and Kočárek et al (2010) showed that water flow and contaminant (in this case herbicide) transport was accelerated in both Bt horizons, due to preferential flow caused by soil aggregation and the restrictive impact of clay and organic matter coatings covering soil aggregates on water and solute transfer between macropores and soil matrix.…”

Section: Introductionmentioning

confidence: 99%

Droplet infiltration dynamics and soil wettability related to soil organic matter of soil aggregate coatings and interiors

Fér

Leue

Kodešová

et al. 2016

Journal of Hydrology and Hydromechanics

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Abstract:The organo-mineral coatings of soil aggregates, cracks, and biopores control sorption and macropore-matrix exchange during preferential flow, in particular in the clay-illuvial Bt-horizon of Luvisols. The soil organic matter (SOM) composition has been hypothesized to explain temporal changes in the hydraulic properties of aggregate surfaces. The objective of this research was to find relations between the temporal change in wettability, in terms of droplet infiltration dynamics, and the SOM composition of coated and uncoated aggregate surfaces. We used 20 to 40 mm sized soil aggregates from the Bt2 horizon of a Haplic Luvisol from loess that were (i) coated, (ii) not coated (both intact), and (iii) aggregates from which coatings were removed (cut). The SOM composition of the aggregate surfaces was characterized by infrared spectroscopy in the diffuse reflection mode (DRIFT). A potential wettability index (PWI) was calculated from the ratio of hydrophobic and hydrophilic functional groups in SOM. The water drop penetration times (WDPT) and contact angles (CA) during droplet infiltration experiments were determined on dry and moist aggregate samples of the three types. The decrease in the CA with time was described using the power function (CA(t) = at -b ). For dry aggregates, the WDPT values were larger for coated as compared to uncoated regions on the aggregate surfaces, and increased with increasing PWI value (R 2 = 0.75). The a parameter was significantly related to the WDPT (R 2 = 0.84) and to the PWI (R 2 = 0.64). The relations between the b parameter and the WDPT (R 2 = 0.61) and the PWI (R 2 = 0.53) were also significant. The WDPT values of wet soil aggregates were higher than those of dry aggregates due to high water contents, which limited the droplet infiltration potential. At the wet aggregate surfaces, the WDPT values increased with the PWI of the SOM (R 2 = 0.64). In contrast to dry samples, no significant relationships were found between parameters a or b of CA(t) and WDPT or PWI for wet aggregate surfaces. The results suggest that the effect of the SOM composition of coatings on surface wettability decreases with increasing soil moisture. In addition to the dominant impact of SOM, the wettability of aggregate surfaces could be affected by different mineralogical compositions of clay in coatings and interiors of aggregates. Particularly, wettability of coatings could be decreased by illite which was the dominant clay type in coatings. However, the influence of different clay mineral fractions on surface wettability was not due to small number of measurements (2 and 1 samples from coatings and interiors, respectively) quantified.

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“…As most physical properties of the soil are highly variable during the year, it is crucial to take these changes into account in order to create and apply the best management practice [21]. To do so, one has to gather measured infiltration and soil erodibility values from in situ plot-scale crop fields.…”

Section: Introductionmentioning

confidence: 99%

Infiltration and Soil Loss Changes during the Growing Season under Ploughing and Conservation Tillage

et al. 2017

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Abstract:Decreased water retention and increased runoff and soil loss are of special importance concerning soil degradation of hilly crop fields. In this study, plots under ploughing (conventional) tillage (PT) and conservation tillage (CT; 15 years) were compared. Rainfall simulation on 6 m 2 plots was applied to determine infiltration and soil loss during the growing season. Results were compared with those measured from 1200 m 2 plots exposed to natural rainfalls in 2016. Infiltration was always higher under CT than PT, whereas the highest infiltration was measured under the cover crop condition. Infiltration under seedbed and stubble resulted in uncertainties, which suggests that natural pore formation can be more effective at improving soil drainage potential than can temporary improvements created by soil tillage operations. Soil erodibility was higher under PT for each soil status; however, the seedbed condition triggered the highest values. For CT, soil loss volume was only a function of runoff volume at both scales. Contrarily, on PT plots, some extreme precipitation events triggered extremely high soil loss owing to linear erosion, which meant no direct connection existed between the scales. Improved soil conditions due to conservation practice are more important for decreasing soil loss than the better surface conditions.

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Temporal variability of structure and hydraulic properties of topsoil of three soil types

Cited by 87 publications

References 58 publications

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

The impact of drip irrigation on soil quality in sloping orchards developed on marl - A case study

Droplet infiltration dynamics and soil wettability related to soil organic matter of soil aggregate coatings and interiors

Infiltration and Soil Loss Changes during the Growing Season under Ploughing and Conservation Tillage

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