This feature allows you to transfer nutrient source data from one year to a different year or series of years. This is most useful when manure, fertilizer data or herd data that has already been entered needs to be changed for a number of years. Select the sources you wish to copy from the setup dialog and choose the years to copy to. If you check Overwrite Existing Data with the Same Name, then any existing sources in the destination years with the same name will be changed to have the new data. The nutrient cost values entered for a given year can also be copied to other years along with the other nutrient source data by clicking on the Copy Commercial Values checkbox.

In addition to editing the fertilizer list for individual farms and crop years, the master drop-down list is shared across all SnapPlus farm files on a computer.  Editing the master fertilizer list does not affect fertilizers already entered on the Nutrient Sources page for any crop year; it merely adds to or shortens the dropdown lists used for selecting dry or liquid fertilizers.

To use the list, start by picking Dry or Liquid, then click on the Add New button. Name the new fertilizer and click Accept. Enter the N, P2O5 and K2O% in the cells below (you can also enter the S, Ca, Mg, B, Mn, or Zn content of the fertilizer here for record-keeping purposes, although SnapPlus does not show recommendations for or calculate the per acre application rates of these nutrients).

To edit a fertilizer, click on the name in the list. Make changes to the formulation, and then click on Save Edit save the changes you have made. Press Cancel Edit to revert any changes made.

To delete a custom fertilizer, click on the name at the top of the list, select and confirm the delete.