Dr Joe Harrison led the Livestock Nutrient Management Research and Outreach Program at WSU Puyallup Research and Extension Center. Dr Harrison is classically trained as a dairy nutritionist and has developed expertise in the area of whole-farm nutrient management, which involves the integration of animal nutrition, agronomy-crops-soils, engineering, and economics. An effective approach to whole farm nutrient management requires the integration of management practices across the farmstead. The overarching goal is to provide real time solutions in the area of Whole Farm Nutrient Management, by providing relevant and profitable strategies in effectively managing nutrients.
Research projects – areas included both nutrition and manure-soil-crop studies:
- Reduction in nitrogen import to dairy farms in feeds by precision ration balancing
- Extraction of phosphorus from liquid dairy manure for off farm use as a fertilizer
- Relationship of manure application to ground water nitrate content
- Fate and transport of bacteria in manure managed in an anaerobic digester
- Transformation and utilization of anaerobically digested manure for crop production
- Potassium nutrition of the early lactation dairy cow