Fertilizer Application Agrilscience or agricultural science

Fertilizer is essential for crops but in some occasion it may hamper to crops . We know that the basic principle of agronomy on agriculture to raise the crop profitability. Without determination
soil fertility and food quality.Keep these views in mind several laws have been formed for judicious application of fertilizers. These are as follows:
1.Law of restitution of elements removed by harvesting
2.Law of restitution of available elements that have disappeared
3.Law of minimum
4.Law of maximum
5.Law of the "Priority of biological quality"