The present investigation was carried out to investigate effects of TiO2 nanoparticles on growth and chemical composition of fennel plants .
Previous work showed that TiO2 nanoparticles could significantly raise photosynthesis and greatly improve growth of fennel (Feoniculum vulgare Mill) plants . The plants were sprayed with different concentrations of TiO2 nanoparticles 2, 4 and 6 ppm . The results showed that, TiO2 nanoparticles at treatment 6 ppm could obviously get the highest number of branches , the tallest plants , the highest fruit yield per plant and the highest values of Pigments,Carbohydrates, phosphorus ,Sugars nitrogen , potassium . sprayed fennel plant with concentrations of TiO2 nanoparticles 0, 2, 4 and 6 ppm is safe for human .
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