Recordkeeping for Pond Drop: Hand Calculation
These one calculation per page sheets lets you fill in the blanks to calculate how much you nitrogen you applied using pond drop and your lab data using your choice of ways to measure your drop.
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 field 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.
This worksheet assumes that you know the surface area of the pond at various pond levels. Instructions and spreadsheet templates to create a pond drop surface area table are here: