Continuous fertilization of rice crops can increase grain yield and soil fertility. Maximum doses of N and P led to higher yields, while potash had minimal impact. Balanced fertilization with N 80, P 40, K 0 maintained consistent productivity. After 10 years, phosphorus and potassium levels decreased, but iron, zinc, pore space, water holding capacity, and volume expansion increased after 20 seasons. Balanced fertilization is crucial for sustained rice productivity.