Can You Pass This Farm Quiz?

Which of the following is NOT one of the three main fertilizer nutrients?

Retry Correct Incorrect Though hydrogen is a plant nutrient, it is not included in the “Big 3” (nitrogen, potassium, and phosphorus) that are required to make a fertilizer “complete” since each one has a vital role.

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Ricky Carioti/The Washington Post via Getty Images

Ricky Carioti/The Washington Post via Getty Images

Which of the following is NOT one of the three main fertilizer nutrients?

• phosphorus
• potassium
• hydrogen
• nitrogen