2. Development of BMP Cost-Effectiveness

96 kg TKN /head-year

Swine

80% N

25 kg TKN /head-year

k /head-year

95% P

2 877kg

g

head-year

Poultry

80% N

TKN head-year

0.10

TKN

head-year

Using the cost figure from Table 2-2 and the effectiveness estimates from

Table 2-6, we can now estimate the cost-effectiveness of land application in

reducing nutrient loads (relative to direct discharge). This process **is**

complicated by the fact that we have measured the effectiveness of land

application in terms of nutrient reduction *per head*

while the cost

estimates are measured per *hectare of applied waste. *The following equation

was used to perform the appropriate conversions.

The parameters for the above equation vary by animal type and by the nutrient

needs of the receiving crop. Table 2-7 summarizes these parameters and

presents the resulting ranges of estimated cost-effectiveness values.

Calculation details are presented in Appendix 6.

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