Final Report for Stapledon Memorial Trust Fellowship

Greenhouse gas emissions(GHG) from the agricultural sector are a major concern. One of the most potent GHG is Nitrous Oxide (N20), which around 60% of the emissions comes from the agricultural soils. The N20 production depends on many variables, such us WFPS, temperature, pH, management, Carbon and Nitrogen content. In this experiment we are going to study the effect of soil management, the dynamic and interaction between C and N in the N2O emissions from soils of a long-term experiment of Uruguay. Soils has been 60 years under different managements, for the study we select (from 7 treatments) 2 rotations: 1- CA continuous agriculture, from a typical crop rotation in Uruguay; and 2-CP the same crop rotation with 50 % of the time with pasture. Soils were sampled in June 2024 and sent to the UK to do an incubation in the Denitrification system at Rothamsted Research in Devon. To study the effect of the different carbon content because of different crop rotation in the emissions.