Soil water repellency and plant cover: A state-of-knowledge review

Popović, Zorica; Cerdà, Artemi

doi:10.1016/j.catena.2023.107213

Cited by 7 publications

(2 citation statements)

References 269 publications

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“…Similar to studies by Hewelke [14] and Hewelke et al [15] in sandy soils, our previous studies also found that soil organic carbon (SOC) content, repellency index (RI), and WDPT increased and pH decreased in acidic sandy soil in Studienka, southwestern Slovakia, and alkaline sandy soil in Csólyospálos, south Hungary, during their 30-and 44-year abandonment, respectively [16,17]. Soil water repellency induced by the vegetation change during succession and parameterized by WDPT and contact angle, CA, is influenced by soil moisture, texture, pH, SOC, CaCO 3 , and clay (mainly kaolinite) content [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Heating on Properties of Sandy Soils

Šurda,

Lichner,

Iovino

et al. 2023

Land

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Although burning grass and crop residues is prohibited in many countries, farmers perceive it as a quick and inexpensive way to eliminate unwanted biomass. The aim of this study was to estimate the impact of heating temperature (simulation of biomass burning) on the studied properties (soil organic carbon (SOC) content, pH(H2O), water drop penetration time, WDPT, and contact angle, CA) of acidic sandy soils. Soil samples were taken from the experimental sites S1, S2, and S3 at Studienka village in the Borská nížina lowland (southwestern Slovakia). Experimental site S1 was arable land, experimental site S2 was arable land abandoned for approximately 10 years, and experimental site S3 was arable land abandoned for approximately 30 years with scattered Scots pine (Pinus sylvestris L.) trees. It was found that all the soil properties studied were strongly affected by heating. A drop in SOC was observed in all the soils for the heating temperature between 20 and 600 °C. Due to the incomplete combustion of SOC, a small (0.1–0.7%) SOC content was recorded even in soils heated to between 600 and 900 °C. An increase in pH(H2O) was observed in all the soils for the heating temperature higher than 300 °C. Soil from the experimental site S1 was wettable (WDPT < 5 s) for all of the heating temperatures. WDPT vs. heating temperature relationships for the soils from the experimental sites S2 and S3 were more complex. After a decrease in the heating temperature of 50 °C, an increase in WDPT for the heating temperature between 50 °C and 300 °C (for S3 soil) and 350 °C (for S2 soil) was registered. Finally, the WDPT dramatically dropped to 0 for the heating temperature of 350 °C (for S3 soil) and 400 °C (for S2 soil). CA started to decrease at 300 °C in all the soils and dropped to 0° for all the soils at 800 °C. CA > 0° measured in soils for the heating temperature between 400 and 800 °C, as a consequence of the small SOC contents due to the incomplete combustion of SOC, is a novelty of this study which demonstrates that CA is more sensitive to the changes in subcritical water repellency than WDPT.

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Section: Introductionmentioning

confidence: 99%

The Effect of Heating on Properties of Sandy Soils

Šurda,

Lichner,

Iovino

et al. 2023

Land

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“…Similar observations were made by Morel et al (1991Morel et al ( , 1987 where maize root mucilage was readily adsorbed on clay minerals and exerted an immediate and significant increase in soil aggregate stability in silty clay and silt loam soils. Furthermore, root mucilage analogue was found to better stabilize soil than bacterial mucilage, upon the disruptive effect of wetting and drying by decreasing wetting rate due to repellency (Czarnes et al, 2000;Popović and Cerdà, 2023).…”

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confidence: 99%

The Dynamic Effect of Root Exudates on Soil Structure: Aggregate Stability and Packing

Dor,

Assa,

Mishael

2023

Preprint

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Abstract. The importance of soil structure, packing and stability, cannot be overstated as it controls vital processes in the terrestrial environment. Physical, chemical and biological processes altogether affect the dynamics of soil structure with the biological driver being the most complex and least explored. We quantified, developing and applying advanced methods, the effect of mucilage (0.035 % w/w), the main substance in root exudates, on soil packing and stability, by micro-CT and laser granulometry (aggregate durability index), respectively. Upon mucilage addition to soils, or plant growth, soil aggregate size and aggregate stability both increased, however, the intensity varied between the soils, in the order of sandy-clay-loam > loamy-sand > clayey soils. Scanning electron microscope and X-ray diffraction measurements focusing on the smaller soil aggregates (<250 µm) and their mineralogy, bring forward their dominant role in aggregation and stabilization processes induced by mucilage. The complex effects of mucilage coupled with a physical driver, wetting and drying, on microorganism activity, were explored. Compensating microorganism activities, root mucilage consumption and self-mucilaginous polysaccharides production, most likely explain the stability steady state reached within three days. The presence of mucilage in sandy-clay-loam and clayey soils, intensified and overcame the aggregation and disaggregation induced by wetting and drying, respectively. Elucidating soil structure dynamics will enable better understanding of soil stability processes and thereby develop better strategies for soil erosion management.

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