Organic Manure Increases Carbon Sequestration Far beyond the “4 per 1000 Initiative” Goal on a Sandy Soil in the Thyrow Long-Term Field Experiment DIV.2

Carbon sequestration has been proposed as a way to mitigate the impact of CO2 on climate. At COP21, ‘4 per 1000 Soils for Food Security and Climate’ initiative was launched with goal increase global soil organic carbon (SOC) stocks by 4‰ year. The Thyrow long-term field experiment DIV.2 chosen determine feasibility this 4 under dry sandy conditions in Eastern Germany. effects different fertilizing regimes SOC contents winter rye yields were investigated. Winter is representative crop region grown monoculture experiment. achieved all treatments including unfertilized control, although ploughing takes place straw removed every highest up 0.5 t ha?1 a?1 provided combination mineral manure fertilization. In three out four years, no yield difference observed between mineral-only fertilization (120 kg N) N (97.4 plant available Yields increased over years treatment pure decreased other treatments.