Green chemistry routed sugar press mud for zinc oxide 2D nano-sheet fabrication and climate-resilient wheat crop productivity

Research Square (Research Square)(2023)

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摘要
Abstract Nanotechnology appears as a promising approach to revolutionize the fertilization industry in the coming decades. However, the crucial interactions of these nanomaterials with abiotic components of the environment like soil organic matter (SOM) and carbon- sequestration may hold the key to sustainable crop nutrition, fortification, and climate change. Here, we investigated the use of sugar press mud (PM) mediated ZnO nanosynthesis for soil amendment and nutrient mobilisation under moderately alkaline conditions. The positively charged (+ 7.61 mv) ZnO sheet-like nanoparticles (~ 17 nm) from zinc sulphate at the optimum dose of (75 mg/kg) blended with PM (1.4% w/w) were used in reinforcing the soil matrix for wheat growth. The results demonstrated improved agronomic parameters with (~ 47%) and (~ 30%) relative increase in yield and plant Zn content. Also, the soil solution phase interactions of the ZnO nanoparticles with the PM-induced soil colloidal carbon (-27.9 mv and diameter 0.4864 µm) along with its other components have influenced the soil nutrient dynamics and mineral ecology at large. Interestingly, one such interaction has reversed the known Zn-P interaction from negative to positive. Thus, the study offers a fresh insight into the possible correlations between nutrient interactions and soil carbon sequestration for climate-resilient crop productivity.
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关键词
zinc oxide,sugar press mud,green chemistry,nano-sheet,climate-resilient
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