Enhancing maize growth through zinc oxide nanoparticles: a sustainable approach to improving plant health and productivity

The application of nanotechnology in agriculture has attracted substantial interest in recent years, with zinc oxide nanoparticles (ZnO-NPs) emerging as a promising technique for boosting plant growth and production. The objective of this work is to examine the impact of chemically synthetic ZnO-NPs on the growth of maize (Zea mays), with a specific emphasis on the development of shoots and roots. ZnO-NPs were sprayed at three concentrations (100 ppm, 150 ppm, and 200 ppm), and their influence was compared to a control group. The results revealed a considerable increase in both shoot and root lengths with greater doses of ZnO-NPs, with the 200 ppm treatment giving the most pronounced growth gains. Regression study demonstrated a good correlation between ZnO-NP concentration and plant growth, while a correlation heatmap highlighted the strong association between shoot and root lengths. However, the possible environmental implications of nanoparticle use in agriculture must be considered in future studies to ensure sustainability. This work provides vital insights into the role of ZnO-NPs in modernising agricultural methods and enhancing crop efficiency.