Mariano Cossani1, Roxana Savin2, Gustavo A. Slafer2, 3, Victor O. Sadras1
2 Department of Crop and Forest Sciences and AGROTECNIO (Center for Research in Agrotechnology) – University of Lleida, Av. Rovira Roure 191, Lleida, Spain, 25198
3 ICREA, Catalonian Institution for Research and Advanced Studies, Spain
Resource limitation, chiefly water and nitrogen, is common for farming systems in Mediterranean environments. Co-limitation of resources was proved in cereal and oilseed crops as well as in many other ecosystems. However, co-limitation involving more than two resources is not frequently explored. In this study, the objective was to develop and test a new method for estimating co-limitation of multiple resources in a case study with wheat and barley crops in Mediterranean environments. The three-way co-limitation between water, nitrogen and radiation explained the yield gaps and water use efficiency of the crops.