Research Article
Assessing Sediment-Nutrient Export Rate and Soil Degradation in Mai-Negus Catchment, Northern Ethiopia
Table 4
Replacement costs for erosion-associated nutrients exported as N and P from the landforms and the entire catchment.
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DAP: diammonium phosphate; ETB: currency, Ethiopian Birr; 17 ETB€ 1 in May 2010 on average. Part of the N exported is converted to the N in DAP. RC: replacement cost for both N and P exported as urea and DAP. The price of each 100 kg of urea and DAP in 2010 crop season was 320 and 360 ETB, respectively. Column 8 multiplied by the area of each landform which is found in Table 2. |