Figure 2-6. Nutrient management cost-effectiveness.
Table 2-22 and Figure 2-7 summarize the cost-effectiveness ranges for best
management practices in the Tar-Pamlico basin. As seen in the table, the
effectiveness of animal waste management practices is highly variable. The
major factors causing this variability are (1) the fertilization requirement of the
crop receiving the waste, and (2) the preexisting waste management condition.
practices, water control structures are the most cost-effective for
nitrogen removal, but are not effective for phosphorus removal. Although not
cost-shared in the basin, nutrient management is also a highly cost-effective