Influence of Different Manganese Concentrations on Eggplant (Solanum melongena L.) Grown in a Hydroponic System

The study aimed to evaluate the effect of three different manganese (Mn) concentrations on plant growth, leaf chlorophyll, carotenoid content, photosynthetic activity, and root morphological development in eggplant (Solanum melongena L. ‘Adana cv. Dolmalık’ ‘Köksal F1’). Plants were grown continuously aerated nutrient solution by using a deep-water culture (DWC) technique fully automated climate room. A randomized block design with replications was used. Both excessive (400 µM) insufficient (0.4 Mn zone reduced shoot fresh dry matter, branch number, area, chlorophyll content both examined genotypes comparison optimal (200 µM). Köksal F1 produced higher biomasses, root:shoot ratio, total average diameter at low concentration Mn. Conversely, Adana Dolmalık significantly stem length, length volume high concentrations. Overall, deficit excess nutrition could induce disorders growth which may reduce crop yield.