Soil mineral N retention and N2O emissions following combined application of 15N-labelled fertiliser and weed residues

The combination of plant residues with inorganic fertiliser‐N provides the potential to increase N‐use efficiency in agricultural fruit production systems, such as olive orchards. The development of weeds in the inter‐canopy area of olive orchards is encouraged as a novel strategy to reduce soil erosion. However, little is known about soil N retention or N2O production following the combined application of inorganic‐N with the mulched weed residues.