Tillage practices and their impact on soil organic carbon and the microbial community

摘要: Soil microorganisms are important for climate regulation as well plant nutrition. In agricultural soils the affected by management choices, like which type of tillage that is used. Moldboard plowing, most common practice, increases mineralization leads to soil organic carbon (SOC) loss, and may thus reduce quality. Conservation practices infer less disturbance they considered compared favor fungi greater extent than bacteria, has been suggested result in increased SOC content. implemented farmers worldwide erosion also improve farm economy. The main aims this thesis were find out how conservation affect concentrations microbial community likely use why. effects practice on SOC, arbuscular mycorrhizal (AMF), saprotrophic evaluated using three Swedish long-term experiments, whereas a questionnaire was sent Scanian more about use. I found do not necessarily lead an increase concentrations, particularly AMF benefit from reduced tillage. Although treatment effect activity consistent, respiration rate often higher under at least when measured near surface. Furthermore, typical farmer who highly educated work halftime with crop production. learned rotation, labor savings deciding To conclude, studied areas, but can still be attractive it benefits better economy, if suitable adapted rotation. (Less)