Start Date: Apr 28, 2006
End Date: Apr 27, 2011
To be able to simultaneously address production and environmental issues, we are taking a multidisciplinary approach to 1) understand biogeochemical mechanisms and processes involved in water and nutrient cycles, 2) evaluate alternative management options and 3) develop management systems to improve the sustainability of agriculture in the region. This requires both field and laboratory investigations, including fescue toxicosis effects on animal physiology. Several field studies will give long-term perspectives and yield realistic relationships between productivity and environmental health cropping studies include: 1) water catchments receiving poultry litter with different tillage management and 2) cover cropping trials based on plant species and method and timing of killing. Pasture studies include 1) evaluation of grazing pressure and organic-inorganic fertilization on soil organic C storage, nutrient runoff, and productivity and 2) water catchments with differences in endophyte association, organic-inorganic fertilization, and presence of cattle.