In this case not only manure, but also urine, which has a high nitrogen content, is distributed. In this region cattle spend the nights in the barn and they drop their manure with their urine in the barn, which rotates to new plots after three to seven days depending on the season, crops to be planted and density of the herd. Longer kraaling is exercised and required during the dry seasons and for heavy feeder crops such as maize, sorghum and potato. Shorter kraaling is often exercised during the rainy season for other small cereals (Erkossa and Gezahegn, 2003).