SnapPlus Help Version 20

The Manure Production Estimator

The Manure Production Estimator

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The Manure Production Estimator

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Watch: Estimating Annual Volumes of Manure for a complete tutorial on the Manure Production Estimator.

The Manure Production Estimator allows for the calculation of annual manure produced by animal species. The calculation of the farm's annual production of manure may also be done by entering storage or spreader information. Note that when a new crop year is created for the farm, any information entered on this page for the prior year will be carried forward and should be edited to reflect any changes in manure production for that year. Annual manure volumes calculated on this page must be hand-entered for each manure type on the Nutrient Sources screen.  

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Click on the plus sign to expand topicLivestock Manure Production Estimator

This calculator allows users to estimate the yearly manure volumes generated on their farm based on the type and number of their livestock.  It uses the animal categories, manure generation estimates, and dilution factors from the Wisconsin Conservation Planning Technical Note WI-1, Companion Document to NRCS FOTG Standard 590, Nutrient Management (December 2006), Table 1. Manure Quantity Estimation for Crop Production.

To start, click on the NS_AddButton button.This will open a dialog box where you can select the animal type and size from a drop-down list.  Click OK and a new row will appear.  After this, check if the animals are present in the winter. If not, leave this unchecked.

You must fill-in the Number of head, Total Number of days, the % collected and spread as solid, and the % collected and spread as liquid. The other cells will automatically fill-in. To delete a row, select the row and click on the NS_DeleteButton button. To delete all of the rows, select the NS_DeleteAll button below the table. For simplicity, you can use the Add All Dairy button to add the ten dairy categories including calves, heifers, dry cows and milking cows of various weights, and the Add All Beef button to add the various beef categories.

 

Copy Manure Production button: Clicking this button brings up a dialog box that allows you to copy or delete any livestock animals, pits or spreaders for a range of crop years. See Copy Manure Production for more information.

 
Click on the plus sign to expand topicStorage volume manure production estimator

This calculator estimates manure production based on the volume in storage and the number of times the storage is emptied. To add a storage unit to the table, click on NS_AddButton button, name the storage source and Accept. If this storage is associated with one of your nutrient sources, select the source from the drop down list in the Storage Source cell. There is no limit on the number of manure storage names that can be entered. You must enter the Pit Size when the storage is full (when it is emptied). Then enter the number of times this storage is emptied in the year indicated.  The other cells will fill-in automatically.
Click on the plus sign to expand topicSpreader volume manure production estimator

This calculator estimates manure production based on spreader volume and number of spreader loads per year. To add a spreader to the table, click on the NS_AddButton button, name the spreader and Accept. There is no limit to the number of spreaders that can be added to the table. You must enter the Load Size (either in Tons or Gallons) and the Number of Loads per year and Rate. It is recommended that you have your manure spreader calibrated to determine an accurate spreading rate.