You are a smart shopper. When you buy mangoes, you always go for the naturally ripened ones. And you know that because the seller told you so. In all probability, you were misinformed. Let's understand, why?
All plants need the three primary macronutrients represented by the alphabets NPK. Yet, depending upon the plant variety and growth stage, different plants may need a different proportion of individual nutrient at any given point in time.