Physical Properties of Texturally Different Soils After Application of Biochar Substrates

Šrank, Dušan; Šimanský, Vladimí­r

doi:10.2478/agri-2020-0005

Cited by 8 publications

(8 citation statements)

References 30 publications

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“…It was also found that generally, SWC increased with the increasing application rates of biochar (including reapplied treatments) at both fertilization levels (N1 and N2). Our findings on SWC are in line with recent studies by Barrrow [75], Agegnehu et al [76], Leelamanie [77], Liyanage and Leelamanie [78], and Šrank and Šimanský [79]. The positive effect of added biochar can partially be because of biochar's high sorption capacity and swelling ability, which result in an increase in the total porosity of the soils.…”

Section: Physical Properties Of Soilsupporting

confidence: 91%

“…Biochar, with its large surface area and a large number of micropores, alters the average surface area of the soil, pore size distribution, and, thus, the water retention capacity of the soil [82]. The incorporation of biochar may enhance the specific surface area up to 4.8 times compared to unamended soils [83] and may also increase the presence of capillary pores [79].…”

Section: Physical Properties Of Soilmentioning

confidence: 99%

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A Sustainable Approach for Improving Soil Properties and Reducing N2O Emissions Is Possible through Initial and Repeated Biochar Application

et al. 2021

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Recent findings of changing climate, water scarcity, soil degradation, and greenhouse gas emissions have brought major challenges to sustainable agriculture worldwide. Biochar application to soil proves to be a suitable solution to these problems. Although the literature presents the pros and cons of biochar application, very little information is available on the impact of repeated application. In this study, we evaluate and discuss the effects of initial and reapplied biochar (both in rates of 0, 10, and 20 t ha−1) combined with N fertilization (at doses of 0, 40, and 80 kg ha−1) on soil properties and N2O emission from Haplic Luvisol in the temperate climate zone (Slovakia). Results showed that biochar generally improved the soil properties such as soil pH(KCl) (p ≤ 0.05; from acidic towards moderately acidic), soil organic carbon (p ≤ 0.05; an increase from 4% to over 100%), soil water availability (an increase from 1% to 15%), saturated hydraulic conductivity (an increase from 5% to 95%). The effects were more significant in the following cases: repeated rather than single biochar application, higher rather than lower biochar application rates, and higher rather than lower N fertilization levels. Initial and repeated biochar applications, leading to N2O emissions reduction, can be related to increased soil pH(KCl).

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Section: Physical Properties Of Soilsupporting

confidence: 91%

Section: Physical Properties Of Soilmentioning

confidence: 99%

A Sustainable Approach for Improving Soil Properties and Reducing N2O Emissions Is Possible through Initial and Repeated Biochar Application

et al. 2021

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“…Mineral nitrogen applied to the soil can act as an accelerator speeding up the mineralization of organic matter [62], which can result in an increase of BD values. However, application of biochar in combination with N fertilization has a positive effect on the incorporation of biochar-especially into larger aggregates [62]-which helps to improve the soil structure [65] and ultimately reduce the BD values as was also confirmed in the results obtained by Šrank and Šimanský [64]. In our case, a significant decrease in BD was observed for biochar application and re-application at the dose of 10 t ha −1 in combination with 108 kg N ha −1 (B10 + N1 and B10 reap + N1) and at the second fertilization level (162 kg N ha −1 ) for biochar application at a dose of 20 t ha −1 (B20 + N2) and re-application at both doses (B10 reap + N2 and B20 reap + N2) (Table 5).…”

Section: Discussionmentioning

confidence: 55%

“…Due to its inert nature, biochar is often combined with other organic and mineral fertilizers to improve its effect in the soil [63,64]. Fertilization-especially with nitrogen-is a significant factor influencing BD.…”

Section: Discussionmentioning

confidence: 99%

Effect of Biochar Application and Re-Application on Soil Bulk Density, Porosity, Saturated Hydraulic Conductivity, Water Content and Soil Water Availability in a Silty Loam Haplic Luvisol

et al. 2020

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Due to climate change the productive agricultural sectors have started to face various challenges, such as soil drought. Biochar is studied as a promising soil amendment. We studied the effect of a former biochar application (in 2014) and re-application (in 2018) on bulk density, porosity, saturated hydraulic conductivity, soil water content and selected soil water constants at the experimental site in Dolná Malanta (Slovakia) in 2019. Biochar was applied and re-applied at the rates of 0, 10 and 20 t ha−1. Nitrogen fertilizer was applied annually at application levels N0, N1 and N2. In 2019, these levels were represented by the doses of 0, 108 and 162 kg N ha−1, respectively. We found that biochar applied at 20 t ha−1 without fertilizer significantly reduced bulk density by 12% and increased porosity by 12%. During the dry period, a relative increase in soil water content was observed at all biochar treatments—the largest after re-application of biochar at a dose of 20 t ha−1 at all fertilization levels. The biochar application also significantly increased plant available water. We suppose that change in the soil structure following a biochar amendment was one of the main reasons of our observations.

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“…Detailed information on the experimental design can be found in the work of Šrank and Šimanský [23]. Briefly, the experiment in Dolná Streda was established using the long segment method in autumn 2017 on 10 plots (one treatment = 90 m 2 ).…”

Section: Experimental Sites and Research Designmentioning

confidence: 99%

Is It Possible to Control the Nutrient Regime of Soils with Different Texture through Biochar Substrates?

2021

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Understanding nutrient management is essential to ensure healthy and adequate food production, especially in the context of biochar applied to soil with different soil textures. Additionally, farmers are beginning to understand the importance of nutrient management and there are still several knowledge gaps in this area. Several studies on biochar showed its positive effects, especially in sandy and nutrient-poor soils. There is still a lack of information on the impact of biochar on nutrient regimes in texturally different soils with sufficient nutrient supply and favorable soil chemistry. This study investigates the effect of two biochar substrates (a) biochar blended with farmyard manure (BS1), and (b) biochar blended with farmyard manure and digestate (BS2) applied at rates of 10 and 20 t ha−1 alone or in combination with fertilization on the changes in sorption capacity and nutrient regime of two texturally different soils: (a) sandy Arenosol, and (b) loamy Chernozem, (both in western Slovakia) which have a favorable nutrient content. The results showed that in sandy soil, the BS2 at rate of 20 t ha−1 increased the sum of basic cations (by +112%) and CEC (by +93%) compared to the control. In sandy soil, the content of total P increased by +35 and +16% in BS1 20 t ha–1 and BS2 20 t ha−1, respectively, when compared to the unfertilized control. The content of total P increased by +18% in BS1 20 t ha−1 after fertilization compared to the fertilized control. In loamy soil, the content of total P increased significantly by +53 and +14% in unfertilized treatment BS2 20 t ha−1 and fertilized treatment with BS1 at 20 t ha−1 compared to the respective controls. Available Ca increased in sandy soil by +50 and +53% in fertilized treatments with BS2 at 20 t ha−1 and BS1 at 20 t ha−1, respectively, when compared to fertilized control. In loamy soil, available Mg increased by +13% in fertilized treatment with BS1 applied at 20 t ha−1. In conclusion, BS application at a dose of 20 t ha−1 had a stronger positive effect on soil sorption parameters in sandy soil than the application dose of 10 t ha−1. The same BS application rate significantly increased total P in both soils.

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Physical Properties of Texturally Different Soils After Application of Biochar Substrates

Cited by 8 publications

References 30 publications

A Sustainable Approach for Improving Soil Properties and Reducing N2O Emissions Is Possible through Initial and Repeated Biochar Application

A Sustainable Approach for Improving Soil Properties and Reducing N2O Emissions Is Possible through Initial and Repeated Biochar Application

Effect of Biochar Application and Re-Application on Soil Bulk Density, Porosity, Saturated Hydraulic Conductivity, Water Content and Soil Water Availability in a Silty Loam Haplic Luvisol

Is It Possible to Control the Nutrient Regime of Soils with Different Texture through Biochar Substrates?

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