Which statement best describes nutrient management plans in agriculture?

• A. They maximize fertilizer use to boost crop yields regardless of runoff.
• B. They optimize fertilizer application timing and amounts to reduce nitrate and phosphate runoff.
• C. They remove nutrients from soil using chemical extraction.
• D. They substitute fertilizers with pesticides in nutrient delivery.

Answer: (B)

Nutrient management plans focus on applying nutrients in a way that meets crop needs while protecting water quality. By using soil tests and crop nutrient requirements to set how much to apply, when to apply, and how to apply, these plans can split applications, incorporate fertilizer into the soil, or use precision techniques so plants can take up most of what’s added. This alignment of input with plant demand minimizes nutrient losses to water, reducing nitrate and phosphate runoff and the risk of downstream pollution.

Practically, this approach is paired with practices like cover crops, buffer strips, and proper manure management to further limit nutrient losses. The other ideas miss the goal: simply maxing fertilizer use without regard to runoff increases pollution; chemically extracting nutrients from soil isn’t a nutrient management plan; and substituting pesticides for nutrients doesn’t provide the needed plant nutrients.