Hydroponic tomato production using reject of desalination in the nutrient solution applied at different stages

The objective of this study was to evaluate the response of tomato (Lycopersicon esculentum) in a hydroponic system, adding water from desalination in the composition of the nutrient solution, resulting in three levels of salinity of nutrient solution: 7,1; 8,7 and 10 ,1 dS m-1, and the control (without addition of water from desalination: 2.1 dS m-1), starting its application at different stages of crop development: 7, 32 and 58 days after transplanting (DAT). The design was completely randomized with 9 treatments and 3 replications, arranged in a 3x3 factorial design (levels of salinity x starting time of the application of salinity), and control. The salinity of the nutrient solution produced by the saline water, significantly reduced the fresh weight of shoot, dry weight of shoots, and fruit production of tomato. The stage of the application of water in the nutrient solution only reduced the dry matter of shoot and fruit yield of tomato, when applied from 7 DAT, while the interaction of these factors did not produce significant effects for the variables.

Lycopersicon esculentum; saline waste; salinity