WITH PLANT FOOD BETTER CROPS A Publication of the International Plant Nutrition Institute (IPNI) 2007 Number 3 ...and much more In This Issue... Global Warming Potential of High-Yield Crop Systems www.ipni.net Biuret in Urea Fertilizers IPNI Scholar Award Winners Nutrient Suppression of Corn Stalk Rot Spatial Variability of Crop Nutrient Needs