What essential components should be included in a nutrient management plan?

A nutrient management plan is designed to optimize crop production while minimizing environmental impact. The correct choice includes essential components that provide a comprehensive approach to nutrient management. Specifically, it incorporates crop nutrient needs, which help ensure that plants receive the necessary nutrients for healthy growth and maximum yield. Soil test results are critical as they inform the current nutrient levels and pH of the soil, allowing for tailored amendments. Management practices are also vital since they outline the methods and scheduling for nutrient application, helping to prevent over-fertilization and reducing risks to water quality.

In contrast, the other options do not encompass the breadth of information required for an effective nutrient management plan. While they may include relevant aspects, they lack the integration of all crucial components necessary for informed decision-making. For instance, focusing solely on crop nutrient needs omits important soil health considerations. Including pesticide use introduces a different aspect that, while important, fails to address the foundational requirements for nutrient management. Lastly, while soil test results and weather patterns are valuable, solely relying on these does not account for the specific nutrient needs of the crops being grown.