Recordkeeping for GPM: Hand Calculation
This one calculation per page sheet lets you fill in the blanks to calculate how much you nitrogen you applied using gpm and run time and your lab data.
The next worksheet allows you to keep a track of lagoon water nitrogen applications made on each field as they occur. Use one worksheet per field for each year or crop season. This worksheet prints on legal size paper.
Here are detailed instructions on how to fill out this worksheet:
After you have calculated your nitrogen applications, use this worksheet to calculate how much phosphorus and potassium you have applied. This worksheet prints on regular 8-1/2 x 11 in paper.
If you would like the worksheet to do the math for you, here is the identical Excel spreadsheet with the formulas already programmed in. You will still want to use one sheet for each field. You will need the Microsoft Excel at least version 2003 or Microsoft Works.