The 2012 ASHS Annual Conference

Robert Mikkelsen

Internatonal Plant Nutrition Inst
4125 Sattui Court
Merced, CA
USA 95348
Email: rmikkelsen@ipni.net

Papers:
Plant Nutrient Management 2 Mapping Crop Nutrient Use and Removal in the U.S Using the Nugis Software to Track Nutrient Use Trends