Assessment of Soil Nitrogen Content in Agricultural Fields Using the Alkaline Permanganate Implications for Sustainable Soil Fertility Management

Abstract

A comprehensive assessment of soil nitrogen content was carried out across seven villages in the Raigad district using the classical Alkaline Permanganate Method. This study aimed to determine nitrogen content in soils from selected agricultural fields, providing insights into soil fertility and sustainable nutrient management practices. Soil samples were collected from surface horizons and analyzed for total nitrogen, with results expressed both as percentages and in kilograms per hectare to ensure agronomic relevance. Significant variability was observed among villages: Sarde, Nagoan, and Mahaivali exhibited high nitrogen levels, indicating fertile soils likely enriched by organic amendments and crop rotation practices. Conversely, Avare and Vindhane recorded low nitrogen content, reflecting potential nutrient depletion or continuous cropping without replenishment. Villages such as Koproli, Jui, and Kegaon displayed intermediate nitrogen levels, suggesting moderate fertility with opportunities for improvement through targeted nutrient management. The study underscores the utility of the Alkaline Permanganate Method for reliable nitrogen quantification and highlights the importance of regular soil testing to guide precise, site-specific fertilization strategies. These findings contribute to both scientific research and practical agricultural management aimed at improving crop productivity and promoting sustainable soil use.