Fertilizers generally have three numbers on the label (for example, 20:10:20). These numbers refer to the three most essential plant nutrients, which are

Question

Quizplus · Accepted Answer

The three numbers on the label of fertilizers refer to the percentage of nitrogen, phosphorus, and potassium present in the fertilizer. These three elements are the most essential nutrients required for plant growth and are commonly referred to as NPK. Therefore, option A, which includes nitrogen, phosphorus, and potassium, is the correct answer.

Fertilizers Generally Have Three Numbers on the Label (For Example