1. A Different Approach to Managing Nitrogen in Sorghum

Research conducted over the past fifty plus years has been used to develop a Nitrogen Fertilizer Recommendation "formula" for grain sorghum which considers factors such as Yield Potential, Residual Nitrate N in the soil Profile, the amount of N mineralized fi-om Soil Organic Matter and Previous Crop Residue, and other potential sources of N such as animal manure or N in irrigation water. The current formula used is as follows: N Rec = Yld x (1.6) - (20 x %SOM) - PNST - PCA - Manure N - Water N When...