Effect of Tillage Practices on the Moisture, Temperature and Soil Carbon Dioxide Flux

Rafael MARIAN, Teodor RUSU, Ioan BRAȘOVEAN, Adrian MILÄ‚ȘAN, Florin UGRUÅ¢AN

Abstract


The emissions of CO2 gas at the surface of soil is known to be called soil breathing process. Once with the fast developement of industry, agriculture, forestry and other fields, the issue of climate change started to gain weight. The increasing level of CO2 greenhouse gas emissions becomes the main concern. The purpose of this research is to observe the impact of tillage machinery system on gas emissions and also to study the dynamics of moisture and temperature in soil's upper layer. Similar studies revealed that the CO2 flux is lower in soils with no-tillage system compared to soils that have faced minimum tillage. The experimental studies of argic-stagnic faeoziom were carried out at the Experimental Station Jucu of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. In our case the emissions of CO2 in minimum tillage soils was almost 2 times higher than the emissions from direct drilling soils. These emissions are closely related to temperature, increasing and decreasing one linked to the other. CO2 flux is also closely related to humidity. It is easily to observe that the greenhouse emission lowers when soil humidity exceedes normal values and encreases when soil humidity stabilizes.


Keywords


: soil tillage systems, CO2 flux, soil temperature, soil moisture

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