Soil fertility management is crucial for plant growth, and integrated nutrient management helps optimize plant nutrition while minimizing harm to the environment. Nutrients cycle between the environment and living organisms, sustaining life on Earth. Human activities, especially agriculture, have significantly altered these cycles, impacting ecosystem services and human well-being. Introducing animals into farming systems can change nutrient dynamics positively. Integrated crop-livestock systems can improve farming sustainability and profitability. Soil nutrient balances show trends in soil fertility changes over time, varying between crops, farming systems, and ecological zones.