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Haghighi M , Heidarian S, Teixeira da Silva J A.2012. The effect of Titanium amendment in N-withholding nutrient solution on physiological and photosynthesis attributes and micro-nutrient uptake of tomato.Biological trace element research.150 (1). 381-390
Haghighi M , Heidarian S, Teixeira da Silva J A.2012. The effect of Titanium amendment in N-withholding nutrient solution on physiological and photosynthesis attributes and micro-nutrient uptake of tomato.Biological trace element research.150 (1). 381-390.
Titanium (Ti) is a beneficial element that promotes growth and biomass production although the mechanism by which this improvement takes place is still unclear, as are other effects on plants, although it is believed that Ti can compensate for N deficiency. To prove this hypothesis, a hydroponic experiment was designed to investigate the effect of adding Ti to a nutrient solution on the nutrient uptake of tomato (Lycopersicon esculentum L.) by withholding N within the nutrient solution (NS) by 25 % (NS2) and by 50 % (NS1). Ti was added at 1 and 2 mg L−1. When Ti was added to nutrient solution, the elemental concentration in tomato changed significantly: K, Ca, Fe, and Zn decreased while Ti increased. As the concentration of N in nutrient solution decreased, the Ca and Ti concentration of tomato leaves decreased and the K, Mn, Fe, Cu, and Zn concentrationincreased. As the N concentration in nutrient solution increased, the Ca concentration decreased although the application of Ti compensated for Ca concentration in NS1. All the photosynthetic attributes and physiological characteristics, including flower induction, decreased when the N concentration of NS decreased by 50 %, although this decrease could be compensated by applying 1 mg L−1 Ti. This has valuable and practical applications and implications for tomato hydroponic culture.