Effect of Digestate on Soil Organic Carbon and Plant-Available Nutrient Content Compared to Cattle Slurry and Mineral Fertilization

Barłóg, Przemysław; Hlísníkovský, Lukáš; Kunzová, Eva

doi:10.3390/agronomy10030379

Cited by 75 publications

(39 citation statements)

References 55 publications

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“…The application of organic manures and straw represents the possible ways to add organic matter to the soil. Digestates contain many valuable nutrients, such as N, P and K [26]. As the main aim of the biogas stations is producing the biogas, consisting mainly of methane, the C content is not a strong side of the digestate when compared with compost and organic manures [81,82].…”

Section: Discussionmentioning

confidence: 99%

“…Without other organic manures, or the amount of applied manures contribution of digestate is low, and the SOC content decreases significantly in the long-term period (see Section 3.3., Model 3). In comparison with organic manures, the long-term field trials have not yet shown any negative impacts of digestate on the SOC content [26,83]. The long-term effects of digestate on the environment, soil and human health have been still studied [29].…”

Section: Discussionmentioning

confidence: 99%

“…The long-term effects of digestate on the environment, soil and human health have been still studied [29]. Maintaining an adequate level of SOC content during long-term application of digestate requires the supply of additional sources of organic C, which should come from post-harvest residues, including straw, as was also published by [26,84]. They studied the effect of different organic manures, digestate, digestate+straw and NPK on the SOM, N content and content of available nutrients, and they did not reveal any significant differences in the analysed parameters.…”

Section: Discussionmentioning

confidence: 99%

“…One of the ways to increase SOM and ensure the inputs of organic substances and nutrients into the soil is the application of organic fertilisers, compost and digestate [26,27]. Digestate is a by-product of biogas plants, which has an unprecedented boom, especially in Europe [28].…”

Section: Introductionmentioning

confidence: 99%

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The Soil Organic Matter in Connection with Soil Properties and Soil Inputs

et al. 2021

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The content of organic matter in the soil, its labile (hot water extractable carbon–HWEC) and stable (soil organic carbon–SOC) form is a fundamental factor affecting soil productivity and health. The current research in soil organic matter (SOM) is focused on individual fragmented approaches and comprehensive evaluation of HWEC and SOC changes. The present state of the soil together with soil’s management practices are usually monitoring today but there has not been any common model for both that has been published. Our approach should help to assess the changes in HWEC and SOC content depending on the physico-chemical properties and soil´s management practices (e.g., digestate application, livestock and mineral fertilisers, post-harvest residues, etc.). The one- and multidimensional linear regressions were used. Data were obtained from the various soil´s climatic conditions (68 localities) of the Czech Republic. The Czech farms in operating conditions were observed during the period 2008–2018. The obtained results of ll monitored experimental sites showed increasing in the SOC content, while the HWEC content has decreased. Furthermore, a decline in pH and soil´s saturation was documented by regression modelling. Mainly digestate application was responsible for this negative consequence across all soils in studied climatic regions. The multivariate linear regression models (MLR) also showed that HWEC content is significantly affected by natural soil fertility (soil type), phosphorus content (−30%), digestate application (+29%), saturation of the soil sorption complex (SEBCT, 21%) and the dose of total nitrogen (N) applied into the soil (−20%). Here we report that the labile forms (HWEC) are affected by the application of digestate (15%), the soil saturation (37%), the application of mineral potassium (−7%), soil pH (−14%) and the overall condition of the soil (−27%). The stable components (SOM) are affected by the content of HWEC (17%), soil texture 0.01–0.001mm (10%), and input of organic matter and nutrients from animal production (10%). Results also showed that the mineral fertilization has a negative effect (−14%), together with the soil depth (−11%), and the soil texture 0.25–2 mm (−21%) on SOM. Using modern statistical procedures (MRLs) it was confirmed that SOM plays an important role in maintaining resp. improving soil physical, biochemical and biological properties, which is particularly important to ensure the productivity of agroecosystems (soil quality and health) and to future food security.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Soil Organic Matter in Connection with Soil Properties and Soil Inputs

et al. 2021

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“…On the one hand, a balanced use of fertilizer can increase the SOC content in the soil. In a study by Barlog et al [10], the main factor determining SOC content in different soil depths was the year. According to the year, SOC values ranged from 14.8 (2016) to 15.6 g kg −1 (2013) in topsoil (0-0.3 m), and from 7.5 (2015) to 10.4 g kg −1 (2013) in subsoil (0.3-0.6 m).The multiannual research conducted by Yang et al [11] indicated that the use of mineral fertilizer along with farmyard manure (FYM) results in a more significant increase in the amount of SOC than fertilization with mineral fertilizer only.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Changes in Soil Organic Carbon, Energy Consumption and Environmental Impact Using Bio-Products in the Production of Winter Wheat and Oilseed Rape

et al. 2020

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Agricultural management, environmentally friendly technologies, chemical, organic and bio-based substances used, as well as meteorological factors, have a significant impact on the fluctuations of soil organic carbon (SOC). The aim of this research was to analyze the effect of different biopreparations on the changes of SOC content and the winter wheat and winter oilseed rape yields by assessing the energy consumption efficiency and the environmental impacts. The experimental research was conducted from 2017 to 2019 in three different treatments, in two of which were used either a molasses and magnesium sulphate based-biopreparation (T1) or a bacteria-based biopreparation (T2), while treatment T3 was applied as a control where no biopreparations were used. The dynamics of SOC content were analyzed at two depths: 0–10 and 10–20 cm. For the analysis of energy efficiency indicators and environmental impacts, the greenhouse gas (GHG) and energy consumption conversion equivalents were used. A summary of the results showed that both types of biopreparations had a positive effect on the changes of SOC content, which was especially evident in the deeper layers at 10–20 cm depth, where, irrespective of the crop type, a more significant increase of the SOC content was observed every year of the experiment compared to the control treatment. Biopreparations had a significant effect in increasing the winter wheat and winter oilseed rape yield. The best energy efficiency ratio was observed in winter wheat (4.84) and winter oilseed rape (5.11) in treatment T1. The results of the environmental impact assessment showed that the lowest GHG emissions were recorded in the winter wheat production in treatment T1 at 108.7–149.1 kg CO2eq Mg−1, while the highest were observed in oilseed rape production in the control treatment T3 at 343.4 kg CO2eq Mg−1.

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