The research of zoologists shows that the average-size horse produces approximately 50 pounds of horse dung per day, which is equivalent to around 18000 pounds (9t) per year. These dung contains 120 pounds of nitrogen, 43 pounds of phosphorous and 77 pounds of potash. The horse farmers pile these horse litter in the corner of their horse farms. This method not only produce a large number of odors to provides prime breeding environment for bacteria and pathogen, but contaminates ground and surface water. How to make the horse litter into useful nutrient fertilizer? As a professional fertilizer machine manufacturer, we can recommend two horse waste management methods into organic fertilizer for you.