Physiology and production of cherry tomato cultivars in a hydroponic system using brackish water

ABSTRACT Agricultural production has become a challenge in arid and semi-arid regions due to the scarcity of water for irrigation, so brackish is commonly used. The present study aimed evaluate physiological responses cherry tomato cultivars under salinity levels nutrient solution hydroponic system. experiment was conducted split plot 5 × 3 factorial scheme with four repetitions. factors corresponded different values electrical conductivity (ECns 2.5, 4.0, 5.5, 7.0 8.5 dS m-1) (Samambaia, Tomate Vermelho Caroline). increase negatively affected gas exchange, electrolyte leakage photosynthetic pigments cultivars, mainly prolongation stress. system efficient up 4.0 m-1, but, above this solution, there photoinhibition or photodamage plants at 30 days after transplanting. Samambaia Caroline were most adapted solutions, while susceptible.