Impact of biochar particle size and feedstock type on hydro-physical properties of sandy soil

Botková, Natália; Vitková, Justína; Šurda, Peter; Massas, Ioannis; Zafeiriou, Ioannis; Gaduš, Ján; Rodrigues, Francisco Cota; Borges, Paulo Filipe Silva

doi:10.2478/johh-2023-0030

Cited by 2 publications

(3 citation statements)

References 64 publications

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“…The decrease in K s was in the range of 35-51%. Botková et al [8] observed a decrease in the saturated hydraulic conductivity in sandy soil by 60-80% after application of the smallest biochar fraction (<125 µm). The measured decrease in saturated hydraulic conductivity in the analyzed soils contrasts with the study results of the other authors [75].…”

Section: Saturated Hydraulic Conductivitymentioning

confidence: 99%

“…The hydrophysical properties of soil, such as porosity, saturated hydraulic conductivity, soil water repellency, and water retention capacity, are the most important factors that affect the soil environment. Some authors found that the soil water retention capacity and porosity increased in sandy soil after biochar amendment [7][8][9] decreased saturated hydraulic conductivity and bulk density [10,11] and had no effect on soil water repellency [12] or altered it [13,14]. The impact of biochar on clayey soil is studied to a lesser extent, and the results are different.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Humic Amendment on Selected Hydrophysical Properties of Sandy and Clayey Soils

Kandra,

Tall,

Vitková

et al. 2024

Water

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In recent years, products containing humic acids have been increasingly used in agriculture to improve soil parameters. Quantifying their impact on soil quality is, therefore, of key importance. This study seeks to evaluate the impact of the commercial humic acid product (HA) on the hydrophysical parameters of sandy and clayey soils sampled from different sites in Slovakia. Specifically, the study hypothesizes that humic amendment will enhance particle density (ρs), dry bulk density (ρd), porosity (Φ), saturated hydraulic conductivity (Ks), soil water repellency (SWR), and water retention capacity in sandy and clayey soils. The results of the laboratory measurements were analyzed using NCSS statistical software at a statistical significance of p < 0.05. In sandy soil, there was a statistically significant decrease in ρd and Ks and an increase in Φ and a contact angle (CA) after the application of 1 g/100 cm3 HA. At a dose of 6 g/100 cm3 HA, the values of ρs, ρd, and Ks decreased, and the Φ and CA values increased. In clayey soil, the Ks value significantly decreased by −35.5% only after the application of 6 g/100 cm3 HA. The addition of HA increased the full water capacity (FWC) and available water capacity (AWC) of clayey and sandy soils. The positive influence of HA on the studied soil parameters was experimentally confirmed, which can be beneficial, especially for their use in agricultural production.

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Section: Saturated Hydraulic Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Humic Amendment on Selected Hydrophysical Properties of Sandy and Clayey Soils

Kandra,

Tall,

Vitková

et al. 2024

Water

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“…However, Jeffery et al (2015) and Wiersma et al (2020) found no significant effects of biochar application on AWC in sandy soil. Botková et al (2023) found that the application of 1% w/w of biochar had a significant effect on the AWC of sandy soil, with the effect varying based on the fraction size of the biochar. However, they did not confirm any effect of biochar type on AWC.…”

Section: Introductionmentioning

confidence: 99%

Effect of wettable and hydrophobic biochar addition on properties of sandy soil

Šurda,

Vitková,

Lichner

et al. 2024

Biologia

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Sandy soils have high hydraulic conductivity and low retention ability for water and nutrients, resulting in low fertility. As water retention of coarse-textured soil is substantially more sensitive to the amount of organic carbon than fine-textured soils, the amendment of sandy soils with biochar is often used. The objective of this study was to find the effect of water-repellent and wettable biochar addition on the porosity, P, saturated hydraulic conductivity, Ks, soil water retention curves, SWRC, plant available water content, AWC, water drop penetration time, WDPT and contact angle, CA of sandy soil. It was observed that biochar addition led to a significant increase in both P and AWC in all treatments, indicating a positive impact on soil water retention. The water-repellent biochar addition led to the statistically significant decrease in Ks, caused by the water-repellent biochar particles between the sand grains preventing water movement in the soil. The wettable biochar addition led to a statistically insignificant decrease in Ks. The addition of very strongly and extremely water-repellent biochar induced slight severity of water repellency (40° ≤ CA < 90°) and did not induce persistence of water repellency (WDPT < 5 s) in the biochar-soil mixture. After an addition of wettable biochar, the biochar-soil mixtures were wettable. A relation between the Ks and CA in sandy soil amended with wettable and hydrophobic biochars was found, which is a novelty of our study.

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Impact of biochar particle size and feedstock type on hydro-physical properties of sandy soil

Cited by 2 publications

References 64 publications

Effect of Humic Amendment on Selected Hydrophysical Properties of Sandy and Clayey Soils

Effect of Humic Amendment on Selected Hydrophysical Properties of Sandy and Clayey Soils

Effect of wettable and hydrophobic biochar addition on properties of sandy soil

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