A fertilizer labeled 5-10-5 indicates which nutrients?

A fertilizer labeled 5-10-5 indicates which nutrients?

• A. Nitrogen, Phosphorus, Magnesium
• B. Phosphorus, Potassium, Iron
• C. Calcium, Magnesium, Nitrogen
• D. Nitrogen, Phosphorus, Potassium

Answer: (D)

Fertilizer labels use N-P-K to show the three main macronutrients: nitrogen (N), phosphorus (P) (usually listed as phosphate, P2O5), and potassium (K) (often shown as K2O). A label of 5-10-5 means the product contains 5% nitrogen, 10% phosphorus (as P2O5), and 5% potassium (as K2O) by weight. So the nutrients indicated are nitrogen, phosphorus, and potassium. Nitrogen promotes leafy growth and greening, phosphorus supports root development and flowering, and potassium enhances overall plant vigor and disease resistance. The other elements mentioned in the distractors (magnesium, iron, calcium) are not part of the N-P-K trio and would appear as separate nutrients if included.

Fertilizer labels use N-P-K to show the three main macronutrients: nitrogen (N), phosphorus (P) (usually listed as phosphate, P2O5), and potassium (K) (often shown as K2O). A label of 5-10-5 means the product contains 5% nitrogen, 10% phosphorus (as P2O5), and 5% potassium (as K2O) by weight. So the nutrients indicated are nitrogen, phosphorus, and potassium. Nitrogen promotes leafy growth and greening, phosphorus supports root development and flowering, and potassium enhances overall plant vigor and disease resistance. The other elements mentioned in the distractors (magnesium, iron, calcium) are not part of the N-P-K trio and would appear as separate nutrients if included.