The crop rotation system in organic farming is a determinant factor to accumulate and
preserve soil organic matter (SOM), and in depth knowledge on its effects is still lacking.
Tillage intensity in particular is crucial to maintain soil aggregates and protect SOM from
degradation. The evolution of SOM was tested in two adjacent fields under two different
rotation cropping systems (low-intensity tillage and high-intensity tillage), and the effect of a
further cultivation of legume in both fields was evaluated using 13 carbon (C)-nuclear …