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Jacobsen, Brian H.; Hjort-Gregersen, K.. |
With increased pressure to redistribute animal manure in order to lower the environmental pressure from agriculture, it seems obvious to consider processing slurry into nutrient rich fractions which can easily be transported. In this paper, an overall analysis of four different separation technologies is presented. The four technologies are Decanter, Funki Manura 2000, Green Farm Energy and Staring. These technologies are all implemented on a full scale in Denmark. In this paper both the economic and environmental aspects are considered, looking at the entire chain from stable to the field. The total investments range from 50,000 to 4 million Euros and the total net costs are from 1 to 7 Euros per tonne for the four different technologies. One of the clear... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
Ano: 2003 |
URL: http://purl.umn.edu/24325 |
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Jacobsen, Brian H.. |
In this paper, an economic analysis of different ways to cover the slurry tank and apply the slurry to the field has been carried out. It is found that covering slurry tanks with either straw or a floating lid is profitable. New field application techniques have become more profitable since an N-norm of 10% under the economic optimum was adopted in Denmark. This has increased the shadow price of nitrogen. When applying animal manure, injection is a profitable alternative to trailing hoses in spring crops before sowing and in many forage crops, as it gives higher yields and sometimes also higher protein content. Injection of animal manure can in some cases eliminate the negative economic effect of a nitrogen norm. There are no clear advantages of using... |
Tipo: Conference Paper or Presentation |
Palavras-chave: Cost of slurry storage; Cost of manure application; Marginal value of Nitrogen; Farm Management. |
Ano: 2002 |
URL: http://purl.umn.edu/6946 |
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