NDSU Grazing Calculator


grazing
Establishing the correct stocking rate is critical in optimizing forage production and maintaining animal performance while ensuring the sustained health of the grazing resources. Accurately calculating range and forage production of grazing resources is important when estimating carrying capacity and stocking rate. The most accurate method to calculate forage production is the clip-and-weigh method. The NDSU Grazing Calculator helps land manager/owner estimate carrying capacity and set initial stocking rate for their grazing resources.

grazing Carrying capacity is a measurement of how much forage a unit or piece of ground is able to produce on an average year. The carrying capacity is the maximum stocking rate possible that is consistent with maintaining or improving the forage and plant community, and other related resources. Stocking rate is the number of animals grazing a unit of land for a specific time period. Stocking rate is one of the most important grazing management decisions a rancher or land manager makes.

For any questions or detailed information, please check the documents or reach out to Dr. Miranda Meehan .

- Range and Forage Production Sample Kits
    -  web version
    -  online pdf version
    -  offline pdf version

- Determining Carrying Capacity and Stocking Rates for Range and Pasture in North Dakota
    -  web version
    -  online pdf version
    -  offline pdf version
Dr. Miranda Meehan
Dr. Miranda Meehan
Assoc Prof/Livestock Environmental Stewardship Spec & Ext Disaster Edu Coord
Department of Animal Sciences, School of Natural Resource Sciences, NDSU
Office: Hultz Hall 191, NDSU Fargo, ND 58102
Mailing Address: NDSU Dept 7630, PO Box 6050 Fargo, ND 58108-6050
Phone: 701-231-7683
Email: miranda.meehan@ndsu.edu


Stocking Rate Calculator


Select Your Quantity of Animal Classes

Select or Enter Animal (Class #1) Info



Calculated Results
Total Animal Unit Months (Total AUMs)

Average Animal Unit Equivalents (Average AUE)


Forage Production Calculator


Pasture or Field Type
Rangeland
Tame Grass
Annual Forages, solid-seeded
Annual Forages, row crops

Sample Weight Type
Air-Dried
Wet

Plant Type

Growth Stage

Enter your sample net weights (unit: gram) separated by commas
Enter your sample net weights (unit: gram) separated by commas
Land Type Sample Net Weights (unit: gram)
Upland Loamy
Upland Sandy
Upland Clayey
Upland Shallow
Upland Very Shallow / Thin ClayPan
Lowland Overflow
Lowland Wet Meadow



Calculated Results

Land Type Forage Production (pounds/acre)
Upland Loamy
Upland Sandy
Upland Clayey
Upland Shallow
Upland Very Shallow / Thin ClayPan
Lowland Overflow
Lowland Wet Meadow
Total Forage Production

Total Forage Production (pounds/acre)


Carrying Capacity Calculator


Pasture or Field Type

Carrying Capacity Calculation Method

Major Land Resource Areas of North Dakota

Note : Select your major land resource area based on the following map. You can click the map below to go to the full-screen, zoomable, and pannable map mode.

 Land Resource Areas Map
Full-Screen Map

Total Forage Production (pounds/acre)

Total Forage Production (pounds/acre)

Total Forage Production (pounds/acre)

Total Acres and Harvest Efficiencies
Note : At least one acre value below must be greater than 0; when you use Estimated AUMs/ac Stocking Rates as the Carrying Capacity Calculation Method, the Harvest Efficiencies will be the estimated or default values that cannot be changed.
Land Type Total Acres Harvest Efficiency (%)
Upland Loamy
Upland Sandy
Upland Clayey
Upland Shallow
Upland Very Shallow / Thin ClayPan
Lowland Overflow
Lowland Wet Meadow

Actual or Custom Relative Forage Production
Land Type Forage Production(pounds/acre)
Upland Loamy
Upland Sandy
Upland Clayey
Upland Shallow
Upland Very Shallow / Thin ClayPan
Lowland Overflow
Lowland Wet Meadow

Harvest Efficiency (%)

Total Acres


Calculated Results
ITEM RESULT
Carrying Capacity Total AUMs
AUMs per acre (AUM/ac)
Acres per AUM (ac/AUM)
Stocking Rate Total AUMs
NOTE:

The value of Stocking Rate Total AUMs comes from the Stocking Rate Calculator.

The stocking rate should not be greater than the carrying capacity to ensure proper resource management.

Frequently, the stocking rate may be lower than the carrying capacity due to different ecological and management objectives.