What is a complete fertilizer?

What is a complete fertilizer?

• A. Fertilizer that contains all three of the primary nutrients
• B. Fertilizer spread evenly over the soil surface
• C. Applying fertilizer to leaves
• D. Fertilizer derived from animals

Answer: (A)

A complete fertilizer provides all three primary macronutrients that plants need in larger amounts: nitrogen, phosphorus, and potassium. The label on a fertilizer shows these as N-P-K, and a product that lists all three nutrients is considered complete because it supplies the essential nutrients in one package. This is different from how the fertilizer is applied (spreading evenly) or how it is applied (to leaves) or its source (derived from animals); those aspects describe use or origin, not whether the fertilizer contains all the key nutrients. So, the best choice is the fertilizer that contains nitrogen, phosphorus, and potassium.

A complete fertilizer provides all three primary macronutrients that plants need in larger amounts: nitrogen, phosphorus, and potassium. The label on a fertilizer shows these as N-P-K, and a product that lists all three nutrients is considered complete because it supplies the essential nutrients in one package. This is different from how the fertilizer is applied (spreading evenly) or how it is applied (to leaves) or its source (derived from animals); those aspects describe use or origin, not whether the fertilizer contains all the key nutrients. So, the best choice is the fertilizer that contains nitrogen, phosphorus, and potassium.