2024, Vol. 7, Issue 12, Part I

author(s)
Ravina Yadav, Shivam Yadav, Krishna and Tarence Thomas

abstract
The study, conducted during the Zaid season of 2021 at the Research Field of the Department of Soil Science and Agricultural Chemistry at Naini Agricultural Institute, SHUATS, aimed to evaluate the effect of varying levels of phosphorus (P) and zinc (Zn) on soil health. The experimental site was characterized by sandy loam soil with an Inceptisol classification. A Randomized Block Design (RBD) was employed for the experiment, with nine treatment combinations and three replications. The treatments involved three phosphorus levels (0, 25, and 50 kg ha^-1) and three zinc levels (0, 10, and 20 kg ha^-1). The results showed that the application of phosphorus and zinc either independently or in combination significantly altered the soil chemical and physical properties. Soil properties such as pore space, electrical conductivity, pH, organic carbon, and available nitrogen, phosphorus, potassium, and zinc demonstrated a declining trend as soil depth increased. In contrast, parameters like bulk density and particle density exhibited an upward trend with increasing depth. The soil at the study site was found to have low levels of organic carbon, nitrogen, and zinc, a neutral to slightly alkaline pH and normal electrical conductivity. The available phosphorus and potassium content were within the medium range. Among the treatment combinations, T₉, which involved the application of 100% ZnSO₄, 100% P₂O₅ and the recommended dose of fertilizers (RDF), exhibited the most favorable effect on soil characteristics. This treatment led to improved soil health, demonstrating significant improvements in nutrient availability, organic carbon content, and overall soil quality. The findings highlight the importance of balanced nutrient management, particularly the combined application of phosphorus and zinc, in enhancing soil fertility and ensuring sustainable agricultural productivity. The study also underscores the need for further research to refine nutrient management strategies tailored to specific soil types and crop requirements.