What does 'Right Source' refer to in nutrient management?

• A. Timing fertilizer to weather patterns.
• B. Matching the fertilizer type to the crop needs.
• C. Adjusting fertilizer price to market demand.
• D. Placing fertilizer at the edge of the field.

Answer: (B)

Right Source means choosing the fertilizer product that provides the needed nutrients in the form the crop can use, given the soil conditions and management plan. Different nutrients come in different chemical forms, and those forms affect how quickly plants can take them up and how long they stay available in the root zone. For example, nitrogen can be supplied as nitrate or ammonium forms, each behaving differently in the soil, so selecting the appropriate source helps ensure the crop gets what it needs without wasting it or causing losses. Similarly, phosphorus and potassium are supplied in specific phosphate or potassium salt forms, and the best choice depends on soil pH, texture, and crop needs. The goal is to align the fertilizer product with the crop’s uptake pattern and soil chemistry to maximize efficiency and minimize environmental impact.