Carbon pool in soil under organic and conventional farming systems

Hábová, Magdalena; Pospíšilová, Lubica; Hlavinka, Petr; Trnka, Miroslav; Barančíková, Gabriela; Tarasovičová, Zuzana; Takáč, Jozef; Koco, Štefan; Menšík, Ladislav; Nerušil, P.

doi:10.17221/71/2018-swr

Cited by 11 publications

(11 citation statements)

References 24 publications

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“…Another well-known model is the EPIC model, which is a process-based model describing the interactions between the climate and soil [37,38]. The model RothC-26.3 is focused on the turnover of organic C in non-waterlogged soils that allow analysing the effects of soil type, temperature, moisture content and plant cover on the turnover process [39,40]. There were also developed many other models [41][42][43].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…In assessing the SOC content under shallow ploughless tillage with additional deep loosening and shallow ploughless tillage, the SOC content was similar. These data suggest that there was a positive effect of reduced tillage on SOC accumulation in upper soil layers due to low soil disturbance and slow decomposition of surface-placed plant residues, which has been established in several experiments carried out in temperate climate conditions [53,54]; however, several studies have shown that tillage has an insignificant effect on SOC content, though can change the distribution of SOC in soil profile.…”

Section: Carbon Stock In the Soil Under Different Combination Of Tillage And Organic Fertilizationmentioning

confidence: 62%

Biological Indicators of Soil Quality under Different Tillage Systems in Retisol

Vilkiene¹,

Mockeviciene²,

Karčauskienė³

et al. 2021

Sustainability

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Soil microorganism diversity has a close relation with soil function, and the changes in the composition of the soil microbial population can directly affect it. The aim of this study was to identify the bacterial community composition and determine the main soil chemical and physical properties formed by the different tillage systems. In the experiment, we analyzed the combination of three tillage systems and four organic fertilizers. Soil samples were taken from the two layers of the soil profile: the upper 0–10 cm and the lower 10–20 cm. The composition and diversity of soil bacterial communities were assessed by the sequencing of 16S rRNA genes. Results revealed that the highest biodiversity was found in the soil with shallow ploughless tillage and enriched with farmyard manure. Actinobacteria and Proteobacteria were the dominant bacterial species across all treatments. Their total abundance varied between 26% and 36% in the different analyzed agroecosystems. For the Dystric Bathygleyic Glossic Retisol, shallow ploughless tillage is the most suitable tillage system, as it creates favorable conditions for the accumulation of organic carbon in the soil under the Western Lithuania climate conditions.

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“…Finally, it should be emphasized that organic farming is not necessarily synonymous with "protection of the carbon present in the soil". In fact, if carbon inputs are insufficient to maintain the carbon balance in the soil, the soil is depleted [53,54]. However, some agronomic practices typical of organic management (e.g., cover crops, minimum tillage, and organic fertilization) generally lead to a lower risk of SOC depletion, in comparison to conventional management.…”

Section: Relevance Of Soil Carbon Storage In Terms Of Co 2 Equivalentmentioning

confidence: 99%

“…The cover crops choice (e.g., choosing field beans over grassland) is one of the main critical factors. Nevertheless, Hábová et al [53] stated that in spite of less carbon input, organic farming was more stable in comparison to intensive farming. The intensive farming system was much more affected by climatic condition and plant residues input.…”

Section: Suggestions From the Rothc Model To Improve The Farm Environ...mentioning

confidence: 99%

The RothC Model to Complement Life Cycle Analyses: A Case Study of an Italian Olive Grove

et al. 2022

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Soil organic carbon (SOC) plays a fundamental role in soil health, and its storage in soil is an important element to mitigate climate change. How to include this factor in Life Cycle Assessment studies has been the object of several papers and is still under discussion. SOC storage has been proposed as an additional environmental information in some applications of the Product Environmental Footprint (PEF). In the framework of wider activity aimed at producing the PEF of olive oil, the RothC model was applied to an olive cultivation located in Lazio region (Italy) to calculate the SOC storage and assess four scenarios representing different agricultural practices. RothC applicability, possible use of its results for improving product environmental performance, and relevance of SOC storage in terms of CO2eq compared to greenhouse gas emissions of the life-cycle of olive oil are discussed in this paper. According to the results, in all scenarios, the contribution in terms of CO2eq associated with SOC storage is remarkable compared to the total greenhouse gas emissions of the olive oil life-cycle. It is the opinion of the authors that the calculation of the SOC balance allows a more proper evaluation of the agricultural products contribution to climate change, and that the indications of the scenarios analysis are useful to enhance the environmental performance of these products. The downside is that the application of RothC requires additional data collection and expertise if compared to the execution of PEF studies.

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Carbon pool in soil under organic and conventional farming systems

Cited by 11 publications

References 24 publications

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

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

Biological Indicators of Soil Quality under Different Tillage Systems in Retisol

The RothC Model to Complement Life Cycle Analyses: A Case Study of an Italian Olive Grove

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