What should be included in a nutrient management plan?

The accurate response emphasizes the importance of having a comprehensive plan that details nutrient sources and application rates. This component is foundational to nutrient management because it ensures that the appropriate amounts and types of nutrients are applied to crops based on their specific needs and the soil's nutrient status. Such a plan helps optimize crop growth, maintain soil health, and minimize environmental impacts, particularly nutrient runoff which can lead to water quality issues.

In addition to defining the sources of nutrients, this comprehensive plan also considers the timing and methods of application, which are critical for maximizing nutrient uptake by plants while reducing the potential for leaching and runoff. This level of planning incorporates environmental sustainability and agricultural best practices, making it essential for effective nutrient management.

The other options, while they may contain relevant information, do not encompass the complete scope required for a nutrient management plan. For instance, listing all chemical pesticides does not address nutrient application and could lead to overlooking nutrient management's main objectives. Focusing solely on organic amendments neglects the full spectrum of nutrient sources that can enhance crop productivity. Lastly, a calendar for planting only is too narrow in focus, as it does not incorporate the necessary details regarding nutrient management, which are crucial for effective crop production and environmental stewardship.