1. Macronutrients, such as carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S), magnesium (Mg), calcium (Ca), potassium (K), etc., are essential minerals needed in significant quantities for plant metabolism.
2. Micronutrients, including copper (Cu), cobalt (Co), manganese (Mn), boron (B), zinc (Zn), chlorine (Cl), etc., are minerals needed in small quantities for essential plant metabolic processes.