Dear student.
Almost all the nutrients that are present in the soil and cannot be taken by plants from the atmosphere, needs to be replenished. Plants can obtain Carbon, hydrogen, and oxygen from the air. elements. Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), boron (B), molybdenum (Mo), chlorine (Cl) etc needs to be replenished in soil.
Regards.