Furthermore, we consider economic sustainability through assessment of water use efficiency in the region, which was analysed by means of economic green- and blue-water productivities of crops, calculated by dividing the producer price (US$/t) by the water footprint of the product (m3/t). The economic land productivity was determined
as the product of yield (t/ha) and producer price (US$/t). A similar analysis is conducted for potential biofuel feedstocks. Lastly, the consumptive (green + blue) water footprints of crop production were compared to global benchmark values to identify the potential for water footprint reduction per crop. Based on the results obtained in Phases 2 and 3, in the response formulation phase (Phase 4) potential measures are discussed; however, detailed follow-up analyses with high-resolution data should be carried out to determine the most effective strategies for specific local situations. In addition the potential for incorporating results from such an assessment in policy decisions is discussed.