Dakota Farmer

Be wary of overgrazing pastures this fall

Give pastures time to recover from grazing to start strong next spring.

Sarah McNaughton, Editor, Dakota Farmer

August 15, 2024

2 Min Read
cattle in field
GRASSLAND MANAGEMENT: Taking care to manage pastures effectively in the fall can help grasses get a jump-start of healthy growth in the spring. Photos by Sarah McNaughton

Whether your ranch’s pastures stayed lush and green, or needed more moisture this summer, careful consideration should be taken in the fall to jumpstart grazing come spring. Stocking rates and carrying capacity of pasture should be determined for producers to decide when to move livestock off of rangeland parcels for optimal nutrition and quality in the next season.

Grasses do not store energy in the roots as other plants do, but rather in the 2 to 3 inches above the roots, where livestock prefer to eat due to its sweeter taste. If the top growth of the grass is too short, there will not before enough roots for the grass to survive the winter and grow in the spring.

Manage stocking rates

To find the best stocking rate, figure out the forage demand — how much forage is required by the type of animals grazing a pasture unit. According to North Dakota State University, to determine the carrying capacity in a specific pasture, producers can use estimated relative production values:

  • Multiply acres of vegetation type by the recommended relative production values to determine total production.

  • Multiply total production by appropriate harvest efficiency to achieve available forage for grazing.

  • Divide by 913 (amount of air-dried foraged consumed by one animal unit per month) to determine total animal units available.

NDSU Extension shares that one way to manage range and pasture utilization is through the use of a grazing monitoring stick. The tool can measure and monitor the utilization of pastureland and rangeland.

Farmer using a grazing monitor stick

As a general rule proper utilization is 50% of the total plant weight of key species used or removed. When measuring the height of species, NDSU shares this protocol:

  1. Place the stick upright without leaning.

  2. Measure the leaf height of the key grass species in the area grazed.

  3. Repeat Step 2 in an ungrazed area to calculate percent removal.

  • Choose a plant that is representative of other plants in the area.

  • Evaluate the current year’s green leaf growth. If the leaf if bent or curled, use your finger to extend the leaf.

  • Do not measure to the top to the inflorescence.

Then repeat Step 2 in an ungrazed area to calculate percent removal.

Give plants sufficient recovery time following livestock grazing. The higher the utilization of the plant, the more time it will need to recover from grazing. Rainfall and climate conditions also play a factor in recovery time.When considering the stocking rates of your pastures, evaluate and adjust accordingly for optimal pasture health and plant nutrition. Find more information from NDSU Extension Livestock Grazing Management.

About the Author

Sarah McNaughton

Editor, Dakota Farmer, Farm Progress

Sarah McNaughton of Bismarck, N.D., has been editor of Dakota Farmer since 2021. Before working at Farm Progress, she was an NDSU 4-H Extension agent in Cass County, N.D. Prior to that, she was a farm and ranch reporter at KFGO Radio in Fargo.

McNaughton is a graduate of North Dakota State University, with a bachelor’s degree in ag communications and a master’s in Extension education and youth development.

She is involved in agriculture in both her professional and personal life, as a member of North Dakota Agri-Women, Agriculture Communicators Network Sigma Alpha Professional Agriculture Sorority Alumni and Professional Women in Agri-business. As a life-long 4-H’er, she is a regular volunteer for North Dakota 4-H programs and events.

In her free time, she is an avid backpacker and hiker, and can be found most summer weekends at rodeos around the Midwest.

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