Manure Module

What does it do?

The manure module tracks N, P, C, volatile and total solids excreted by the animals as the manure moves throughout every step of the manure management process.

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It tracks losses of these components to emissions and leaching and holds manure until it is either exported off the farm or spread on fields in the Soil and Crop Module. Climatic factors (temperature and humidity), and bedding factors are mixed into the manure impact the losses and composition of manure over time.

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What inputs do I need?

Each pen from the animal module must be linked to a manure management scenario. These manure scenarios can be repeated across pens or uniquely defined for each pen. Scenario inputs include: 

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• Bedding

  • ​Type, quantity, and nutrient content.

• Handler

  • ​Type, water usage, frequency.

• Separation

  • ​Type, separation efficiency.

• Anaerobic digestion

• Storage

  • ​Length of time, cover/crust/cap and flare on liquid manure storage.

How does it work?

The manure module is linked to the Animal Module through the pen designation. At a minimum, each animal category must have a pen and that pen must be linked to a manure management scenario. The same scenario can be repeated for multiple pens, or each pen could have its own manure management scenario.

The manure module is also connected to the Soil and Crop Module through the manure field connector. Through this connection, the crop and soil module requests manure from the manure module based on the application information provided by the user:​

• Bedding.

• Manure handlers.

• Separators and digestors​.

• Manure storage.

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What outputs can I expect?

Key outputs of interest include: ​

• Manure storage emissions (N₂O, NH₃, CH₄).

• Biogas capture from anaerobic digestion.

• Manure composition (N, P, K, volatile solids, total solids). 

• Quantity of manure.