Which management change would NOT require an amendment?

A management change that involves an increase in fertilizer types does not typically require an amendment because it primarily pertains to the types of fertilizers being used rather than altering the overall system or plan of nutrient management. Adding different fertilizer types can enhance nutrient availability and tailor the nutrient application to better meet crop needs without necessitating formal changes to the nutrient management plan.

On the other hand, increasing animal equivalent units (AEUs) per acre, changing crop types, or complying with new phosphorus (P) index requirements often involve significant shifts in nutrient management practices. For instance, a 10% increase in AEUs per acre may require a reevaluation of nutrient load calculations, as more animals generate more manure, which must be managed differently. Similarly, a change in crop types can affect nutrient uptake and soil requirements, necessitating adjustments in the nutrient management plan. New P-index requirements could also dictate changes to how phosphorus is applied, which would mean amendments to the existing plan are warranted.