Effect of nano fertilizers mediated on nutrient uptake on rice crop and chemical properties of soil

The increasing demand for sustainable agricultural practices necessitates novel approaches to nutrient management, especially for major crops such as rice (Oryza sativa L.). The objective of this study is to evaluate the potential of integrating nano-fertilizers with conventional fertilizers to optimize nutrient use efficiency and enhance soil health in rice cultivation. A field experiment was conducted during 2022-23 at the Crop Research Station, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (UP), using thirteen treatments and three replications in a randomized block design. The treatments included nano zinc (Zn) spray, bio-stimulant spray and different combinations of 100% and 75% recommended dose of fertilizers (RDF) with NPK consortia. These treatments resulted in improved nutrient (nitrogen, phosphorus, potassium and zinc) content in rice grains as well as significant increase in grain and straw yields. Additionally, T₁₃ displayed the highest soil organic carbon and nutrient content, indicating increased residual soil fertility, post transplantation application of 75% NPK + NPK consortia + NPK spray + bio-stimulant spray+nano zinc spray emerged as the most effective and sustainable form of nutrient management in rice cultivation. This integrated approach not only optimizes fertilizer use but also enhances soil health and economic benefits, thereby boosting rice production.