Effect of tillage method on carbon-dioxide emission andsoil properties under two soil surface levels

Abstract

Agricultural ecosystems plays vital roles in production and consumption of greenhouse gases, specifically carbon dioxide (CO2). In our study we analysed the CO2 gas emission of soil in a tillage experiment and the correlation among the CO2 emission and the humus, pH,silt and clay content and the biomass. This experiment was established in Research Institute of Nyíregyháza. Three tillage methods i.e. traditional, reduced, and direct sowing were applied under two soil surface types. Soil CO2 emission was significantly influenced by soil surface types. The lower areawas recorded the highest values of CO2 emission than higher area. There were close correlations among the CO2 emission and the biomass, the soil humus content and the silt and clay content, but the correlation was at medium level between the CO2 emission and soil pH(KCL). The reduced tillage method resulted in the less CO2 emission on the hill. The soil CO2 emission was higher in both traditional tillage and the direct sowing, but the effect of these tillage methods was not significantly different from each other. The soil CO2 emission increased in all three tillage methods especially under reduced tillage in the lowerarea comparing to the higher area.