Dryland compost and soil mineralization applied research field studies

These field studies are a combined effort of Washington State University, Oregon State University and the University of Idaho funded by a four-year USDA grant.

Two dryland organic sites are in Idaho, one in Camas County and one in Blaine County. Dairy compost is applied in the fall in a replicated large-scale plot design. Soil mineralization of nitrogen, phosphorous and potassium is monitored over the growing season and crop quality and yield data are collected. UI Extension educators Cindy Kinder (Camas/Gooding counties), Lauren Hunter (Blaine County) and Christi Falen (Lincoln County) and UI Extension specialist Amber Moore have collected and evaluated data. Below are reports and publications about this project.

• Phosphorus and potassium availability from dairy compost in a high-elevation, dryland, organic alfalfa system Hunter, L.A.; Falen, A.; Falen, C.L.; Kinder, C.A.; Moore, A.