diff --git a/FarmmapsNbs/NbsApplication.cs b/FarmmapsNbs/NbsApplication.cs
index e621bf4..03dc72b 100644
--- a/FarmmapsNbs/NbsApplication.cs
+++ b/FarmmapsNbs/NbsApplication.cs
@@ -75,7 +75,7 @@ namespace FarmmapsNbs
             }
 
             var cropfieldItem = await _generalService.CreateCropfieldItemAsync(myDriveRoot.Code,
-                $"VRA NBS cropfield {input.OutputFileName}", DateTime.Now.Year, input.GeometryJson.ToString(Formatting.None));
+                $"VRA NBS cropfield {input.OutputFileName}", plantingDate.Year, input.GeometryJson.ToString(Formatting.None));
 
             var dataPath = Path.Combine("Data", input.IsariaZipFile);
             var isariaShapeItem =
@@ -97,7 +97,7 @@ namespace FarmmapsNbs
             _logger.LogInformation($"Calculating targetN with targetYield: {input.TargetYield}");
             var targetNItem = await _nitrogenService.CreateTargetNItem(cropfieldItem);
             var targetNData = await _nitrogenService.CalculateTargetN(cropfieldItem, targetNItem, plantingDate,
-                measurementDate, input.PotatoPurposeType, "irmi", input.TargetYield);
+                measurementDate, input.PotatoPurposeType, input.TargetYield);
 
             if (targetNData == null)
             {
diff --git a/FarmmapsNbs/NitrogenService.cs b/FarmmapsNbs/NitrogenService.cs
index bc230f2..b6aa837 100644
--- a/FarmmapsNbs/NitrogenService.cs
+++ b/FarmmapsNbs/NitrogenService.cs
@@ -34,24 +34,25 @@ namespace FarmmapsNbs
             };
             return await _farmmapsApiService.CreateItemAsync(itemRequest);
         }
-        
+
         /// <summary>
         /// Calculates TargetN, makes the assumption the cropfield and user.input(targetn) item have the same parent
         /// </summary>
         /// <param name="cropfieldItem">The cropfield to base the calculations on</param>
-        /// <param name="targetYield">The target yield input for the TargetN calculation</param>
+        /// <param name="targetNItem">The targetN item to save calculations in</param>
         /// <param name="plantingDate">The date the crop is planted</param>
         /// <param name="measurementDate">The date the measurements are taken</param>
+        /// <param name="purposeType">The crop purpose</param>
+        /// <param name="targetYield">The target yield input for the TargetN calculation</param>
         /// <returns>The TargetN</returns>
         public async Task<TargetNData> CalculateTargetN(Item cropfieldItem, Item targetNItem, DateTime plantingDate, 
-            DateTime measurementDate, string inputType, string purposeType, int targetYield)
+            DateTime measurementDate, string purposeType, int targetYield)
         {
             var nbsTargetNRequest = new TaskRequest {TaskType = VRANBS_TASK};
             nbsTargetNRequest.attributes["operation"] = "targetn";
             nbsTargetNRequest.attributes["inputCode"] = targetNItem.Code;
             nbsTargetNRequest.attributes["plantingDate"] = plantingDate.ToString();
             nbsTargetNRequest.attributes["measurementDate"] = measurementDate.ToString();
-            nbsTargetNRequest.attributes["inputType"] = inputType;
             nbsTargetNRequest.attributes["purposeType"] = purposeType.ToLower();
             nbsTargetNRequest.attributes["targetYield"] = targetYield.ToString();
             string itemTaskCode = await _farmmapsApiService.QueueTaskAsync(cropfieldItem.Code, nbsTargetNRequest);