CO₂ emissions in a soil under different tillage practices

Abstract

CO2 emissions represent one of the greenhouse gases significantly affecting climate change. Reduced tillage practices can contribute to the mitigation of CO2 emissions from soils. The effect of tillage practices with different straw incorporation on CO2 emissions was studied in field experiments in the years 2020 and 2021. The winter wheat straw was used in 2020, and spring barley straw in 2021. Treatments were: (1) chiselling to 10–12 cm; (2) shallow chiselling (5–6 cm depth); (3) straw mulch, and (4) stubble. The chiselling to 10–12 cm in the warm summer period of 2020 increased the CO2 emissions from soils even twice in comparison with other used soil tillage practices. The soil temperature and CO2 emissions decreased in the following order: chiselling to 10–12 cm < shallow chiselling ≤ stubble ≤ mulch in 2020. Low CO2 emissions without significant differences among treatments were observed in the year 2021 when low soil temperatures and excessive soil water content filling soil pores caused by intensive precipitations (23 mm) coming shortly after soil tillage were observed. The CO2 emissions from soils are affected by a number of factors. Among them the current weather conditions as well as soil temperature the depth of soil tillage and handling of postharvest residues, are important.

Experimental Study of Two Fallow Field Treatment Influence Methods on Soil Moisture Dynamics

“…8). Similar results were obtained by Mühlbachová et al (2022), who achieved an increase in value up to 1.7-fold. In areas with scarce rainfall, soil conservation technologies are vital, as other types of technology cause soil desertification (Ruan et al, 2021).…”

“…Soil characteristics were as follows: medium They are often produced in V-shaped blades with an operating width of 46 cm or more (Rédl and Findura, 2021). Furthermore, Mühlbachová et al (2022) observed that tillage practices and varying construction of the devices employed have an impact on CO 2 emissions as well.…”

Effect of Biostimulant, Manure Stabilizer, and Manure on Soil Physical Properties and Vegetation Status

“…For the FM variant, the CO 2 emissions coming from diesel combustion are therefore 5.12 kg ha −1 lower. Although the reduction in CO 2 emissions can be ensured by reduced tillage [41], it is necessary to address this issue also in the case of conventional technology. CO 2 emissions in agriculture, however, are a very complex issue that needs to be considered in a broad ecosystem cycle.…”

Influence of the Long-Term Application of Management Practices (Tillage, Cover Crop and Glyphosate) on Greenhouse Gas Emissions and Soil Physical Properties

“…The disturbance of soil aggregates potentially leads to elevated soil aeration, greater soil temperatures, and reduced soil moisture, resulting in increased CO 2 fluxes. Other studies have also confirmed that, aside from tillage depth, soil temperature, and moisture, the incorporation of crop residues could potentially be decisive for increased CO 2 emissions from soil [34]. The lower bulk density witnessed in the ploughed treatments enhanced the CO 2 emissions in the soil, contrary to the suppression of CO 2 in higher bulk density, which is synonymous with no tillage.…”