Interaction of long-term nitrogen fertilizer application, crop rotation, and tillage system on soil carbon and nitrogen dynamics
文摘
Background and aimsTillage system and crop rotation influences soil organic carbon (SOC) and total N (TN), but there remains considerable uncertainty in the response of C and N dynamics to fertilizer N inputs. A long-term (11-yr) experiment on a clay loam Orthic Humic Gleysol at Ridgetown, Ontario, Canada was used to evaluate the impact of fertilizer N applications (in-season zero N (−N) compared to (+N) 100 and 80 kg N ha-1 yr.-1 to corn (Zea mays L.) and wheat (Triticum aestivum L.), respectively) on soil attributes.