We hypothesized that long-term adoption of conservation
tillage systems and reduced N fertilization would be a sustainable
strategy in the region 10 years after their adoption, and that WUE
and response to N fertilization would be increased under
conservation tillage systems due to improved soil water conservation.
Consequently, the objective of this study was to evaluate
long-term effects of tillage and N fertilization on crop response and
WUE in a rainfed Mediterranean agroecosystem.