Ammonia Losses from Liquid Manure Applications Calculator - Step 1 of 4


Ammonia volatilization during manure application represents a significant source of air pollution as well as the loss of potential nitrogen for crop production. Estimates of whole-farm ammonia emissions suggest that as much as 35% of the total ammonia emissions may occur during land application of manure depending on manure characteristics and environmental conditions.

Estimation of ammonia loss from manure is beneficial to improve nutrient management recommendations and to assess the value of ammonia conservation techniques. The purpose of this calculator is to estimate ammonia emissions due to liquid manure application to farm land. It also estimates the economic value of the ammonia volatilization loss based on fertilizer nitrogen cost.

By entering the manure characteristics, soil condition, land size, weather, and application techniques, user will get the results of estimated ammonia losses and dollar value. By modifying these inputs, the user can directly observe the effects of individual factors such as application method, weather conditions on the estimated ammonia loss. This calculator can assist users to assess environmental conditions and methods of liquid manure land application.

The option of metric and imperial units is available for land area and manure application volume

The calculator allows users to print the estimate results.

Users should seek the advice of appropriate professionals and experts if they have any concerns regarding the inputs and outputs of this calculator.

FireFox (ver 2+) or Internet Explorer (ver 7+) is recommended.


The primary purpose of this calculator is to assist producers with the implementation of management practices that promote environmental and economic sustainability. The calculator subjects to modification without notice. Information generated from this calculator is provided to the recipient entirely at the risk of the recipient and because the recipient assumes full responsibility, Alberta Agriculture and Forestry shall not be liable arising out of the use of or reliance on this calculator.

Land Information

Field ID: 
Date (yyyy/mm/dd): 
Land Area :   
Soil Moisture
at Time of Application:


The inputs to Text Boxes of "Field ID" and "Memo" will be printed on the top of the printable calculation report. You can leave the Text Boxes unfiled if you are not going to print the calculation results.

The unit for Land Area can be either Acre or Hectare.

This information maintained by Atta Atia