Macronutrient
A macronutrient is an essential plant nutrient required in relatively large quantities. In practical mango fertilization, the term commonly includes nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. Large requirement does not mean unlimited benefit: excess supply can create imbalance, salt injury, or growth that is poorly timed for flowering. Match a program to tree age, soil, crop stage, and local guidance, and remember that a fertilizer's three main label numbers do not describe every essential nutrient.