Effect of 26-years of soil tillage systems and winter cover crops on C and N stocks in a Southern Brazilian Oxisol
Tales Tiecher, Elci Gubiani, Maria Alice Santanna, Murilo G. Veloso, Ademir Calegari, Lutécia Beatriz dos Santos Canalli, Maria R. Finckh, Laurent Caner, Danilo Rheinheimer dos Santos
Abstract
Soil management and crop rotation are key factors in controlling the accumulation of C and N in the soil profile, but their long-term effect remains poorly understood for deep soil layers, especially in subtropical conditions. Using a long-term experiment (26-years), this study aimed to evaluate the effect of different soil management systems associated with different winter cover crops on C and N accumulation in a very clayey (72 % clay) soil up to 1 m deep. Two tillage systems [...]
Topics & Concepts
OxisolAgronomyEnvironmental scienceTillageCover cropSoil coverCrop rotationMollisolSoil managementConventional tillageCropSoil waterAgroforestrySoil scienceBiologySoil Management and Crop YieldSoil Carbon and Nitrogen DynamicsGrowth and nutrition in plants