The Golf Course Superintendents Association of America‘s Environmental Institute for Golf (EiFG) has published a follow up to the 2006 Golf Course Nutrient Use Survey. There were national reductions in N, P and K use, due to primarily three factors: Facility closure (9%), acreage reduction and rate reduction accounted for the remaining 90% reduction.
Of particular interest are the changes in nutrient management decision-making as impacted by new research on soil test recommendations, new approaches to interpreting soil tests such as MLSN, and an overall view expressed that recommendations had lead to gratuitous applications. More information.