Effect of salinity on canopy water vapor conductance of young and 3-year old Jatropha curcas L.

► We compare physiological responses of young and 3 year old Jatropha to salinity. ► We report differences in canopy water loss and water vapor conductance. ► We report comparable transpiration rate at canopy and leaf levels. ► We cover lower leaf growth under salt stress. ► We report proportional leaf sodium and potassium concentration to water loss.