| 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... |
