What is a "buffer zone" in nutrient management?

A buffer zone in nutrient management refers to areas surrounding fields that are specifically designated to intercept nutrient runoff. This concept is crucial in agricultural practices, as buffer zones help minimize the transport of fertilizers and other nutrients from fields into adjacent water bodies. By planting vegetation or establishing natural habitats in these zones, they can effectively trap sediment and absorb excess nutrients, thereby protecting water quality and promoting sustainable farming practices.

While the other options describe various agricultural practices—such as crop rotation for soil health, composting for recycling organic waste, and zones for pesticide application—they do not directly address the primary function of a buffer zone in preventing nutrient runoff and protecting water resources. The effectiveness of buffer zones in nutrient management underscores their importance in maintaining ecological balance and enhancing the sustainability of agricultural landscapes.