The Andersons Turf Nutrition Tool was first created in 1998 (formally called "N-break") and is updated at least annually. The information presented with this tool are typical results based on the database of information available to The Andersons, and should be used only as a guide in planning your turf nutrition. Variation in soil moisture, temperature (outside of normal) and soil type all impact performance of a balanced nutrition program. Comments and suggestions should be sent to chuck.anderson@andersonsinc.com