Effects of Continuous Use of Nitrogen Alone and In Combination with Phosphorus and Potassium Fertilizers on Plant Available Major and Secondary Nutrients in Soil under Wheat-Rice Intensive Crop Rotation: Impacts of Continuous Fertilizer Use on Soil Nutrient Availability and Crop Productivity. JASRAE. 2017;13(2):945-948. Accessed August 21, 2025. https://ignited.in/index.php/jasrae/article/view/6932