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.

Hand calculate lbs N/acre from pond drop using approximate method

Hand calculate lbs N/acre from pond drop using midpoint of drop

Hand calculate lbs N/acre from pond drop using runrise

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.

Hand calculations for pond drop - season

Here are detailed instructions on how to fill out this worksheet:

How to use the pond drop hand calculation 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.

Hand Calculation for P & K season

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.

Easy Calc Nitrogen spreadsheet for pond drop

Easy calculations for phosphorus and potassium Excel Spreadsheet

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:

Pond Drop Templates