Production of ZnO nanoparticle by the green synthesis method using different plant extracts and investigation of usage possibilities as nanofertilizer

Within the scope of this thesis, ZnO nanoparticles were synthesized by green synthesis by using Laurus nobilis and Myrtus communis plant leaves extracts collected at Osmaniye Korkut Ata University Campus, and by preparing them at different concentrations (0, 62.5, 125, 250 and 500 ppm), their use as in vitro nanofertilizer could be used in various plants. (Zea mays (maize), Triticum aestivum (wheat) and Vicia sativa (vetch)) seeds were investigated. 25 g of each plant sample was taken and placed in 500 ml of dH2O and stirred continuously at 100 oC for 1 hour. 50 ml of the plant extract obtained by filtration was taken and 5 g (CH3COO)2Zn 0.2 H2O was added to it and kept stirring continuously until it evaporated. ZnO nanoparticles were obtained by burning the pellet part separately at 400, 600 and 800 oC in the muffle furnace. The resulting powders were characterized using XRD and UV-Vis. The sterilized seeds were taken into 9 cm petri dishes with 2-layer Whatman No: 1 filter paper inside, and 10 ml of the solutions prepared by adding ZnO NPs at different concentrations were placed on them and the parafilm was closed. Petri dishes were then kept at room temperature (25 oC, 12 hours dark, 12 hours light) for 8 days. It was determined that ZnO nanoparticles obtained by green synthesis method using extracts of both plants were more effective at the lowest concentrations (62.5 and 125 ppm).