The adoption of intercropping systems in the irrigated perimeters can constitute an "agronomic way" to increase the added value by used m 3 of water. The objective of this research was to evaluate the efficacy of intercropping potatoes with green bean compared to monoculture potatoes. Intercropped potatoes showed no significant reduction in yield when compared to monoculture potatoes. Green beans yields were reduced when concurrently intercropped. The relative yield total (RYT), a measure of intercropping productivity, was 1.55 indicating that it would require 55% more land for separate monoculture plantings of potatoes and beans to produce a yield equivalent to the intercropping system. On the other hand, the intercropping system engendered an increase in the water and in the radiation use efficiencies (WUE MST and RUE MST) from 8.69 kg/m 3 to 10.15 kg/m 3 and from 4.47 g/MJ to 4.77 g/MJ, respectively. Finally, a linear relation between the accumulated absorbed radiation and the accumulated evapotranspiration was able to be revealed. Intercropping potatoes with green beans increases output per unit area and enables growers to take full advantage of the available natural resources.
