A number of abiotic stresses impose damage to crop and provokes reduction of yield productivity. Amongst several abiotic stresses, water deficit and soil salinity are the most commonly investigated owing to the extent of cultivated area affected by them. Water scarcity and increase competition for water resources involving several sectors of the production segment (agriculture, industry, hydroelectric energy, etc.) and also for human basic necessities, imposes the study of new concepts of irrigation, in order to adapt the crops to water shortage and maintain satisfactory levels of productivity
