McPhee Farms Inc., a dairy farm in Michigan, has successfully implemented a composting system to manage manure. This initiative has led to significant environmental and operational benefits.
Initial Motivation
Farm owner Bill McPhee initially turned to composting to comply with Concentrated Animal Feeding Operations (CAFO) regulations. However, he continued the practice due to its positive impact on the farm.
Key Benefits of Composting
Additionally, One major benefit is the reduction in manure volume by at least 60%. This decrease makes manure handling much more efficient and reduces odor, which improves relations with neighbors.
Composting Process
The composting process at McPhee Farms involves several steps:
- Collection: The farm collects manure and bedding materials such as leaves and straw.
- Windrow Formation: They pile these materials into windrows, which are turned regularly. This provides oxygen for microorganisms that break down the materials.
- Temperature Control: The process generates high temperatures between 120°F and 140°F. These temperatures kill pathogens and weed seeds, resulting in a sterile end product.
Nutrient Management
In fact, composting transforms nitrogen in manure into a more stable organic form. This reduces the risk of leaching into groundwater, making the composted manure a valuable fertilizer that can supplement or replace chemical fertilizers.
Usage of Composted Manure
Thus McPhee Farms uses the composted manure on their fields and sells surplus to other farmers for $20 per ton. Additionally, they use their composting unit to dry bedding packs in corrals and pastures, which improves animal comfort and hygiene.
Future Plans
Bill McPhee plans to expand his composting operation in the future. He even considers using some of the compost as bedding material, citing its comfort similar to sawdust.
Overall, The example of McPhee Farms highlights how composting system with manure can be a sustainable and profitable solution for dairy farms. This approach addresses environmental concerns while improving operational efficiency and generating additional income.
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