diff --git a/SVSModel/Models/SoilNitrogen.cs b/SVSModel/Models/SoilNitrogen.cs
index c9ba4d2..39c75c4 100644
--- a/SVSModel/Models/SoilNitrogen.cs
+++ b/SVSModel/Models/SoilNitrogen.cs
@@ -13,38 +13,6 @@ namespace SVSModel.Models
 {
     public class SoilNitrogen
     {
-        /// <summary>
-        /// Calculates soil mineral nitrogen from an assumed initial value and modeled crop uptake and mineralisation from residues and soil organic matter
-        /// </summary>
-        /// <param name="uptake">series of daily N uptake values over the duration of the rotatoin</param>
-        /// <param name="residue">series of mineral N released daily to the soil from residue mineralisation</param>
-        /// <param name="som">series of mineral N released daily to the soil from organic matter</param>
-        /// <returns>date indexed series of estimated soil mineral N content</returns>
-        public static Dictionary<DateTime, double> InitialBalance(
-            Dictionary<DateTime, double> uptake,
-            Dictionary<DateTime, double> residue,
-            Dictionary<DateTime, double> som)
-        {
-            DateTime[] simDates = uptake.Keys.ToArray();
-            Dictionary<DateTime, double> soilN = Functions.dictMaker(simDates, new double[simDates.Length]);
-            foreach (DateTime d in simDates)
-            {
-                if (d == simDates[0])
-                {
-                    soilN[simDates[0]] = Constants.InitialN;
-                }
-                else
-                {
-                    soilN[d] = soilN[d.AddDays(-1)];
-                }
-                soilN[d] += residue[d];
-                soilN[d] += som[d];
-                double actualUptake = uptake[d]; //Math.Min(uptake[d], minN[d]);
-                soilN[d] -= actualUptake;
-            }
-            return soilN;
-        }
-
         /// <summary>
         /// Calculates soil mineral nitrogen from an assumed initial value and modeled crop uptake and mineralisation from residues and soil organic matter
         /// </summary>