The University of Arizona

College of Agriculture and Life Sciences

V Bar V Range Program

Introducing the V Bar V Range Program

The Encyclopedia Britannica defines range or rangeland as “any extensive area of land that is occupied by native herbaceous or shrubby vegetation which is grazed by domestic or wild herbivores.” A simple statement but one packed with a lot of information if you think about it. At the University of Arizona’s 71,000 acre V Bar V Ranch, it is our job to think about it, rangeland that is. And to not just think about it but to study, manage, and educate others about rangeland as well. As scientists and educators working in the field of rangeland ecology and management, we are fortunate to have the V Bar V as our laboratory and classroom and we want to share that good fortune with you. This experiment station is unique among university research ranches because we are a public land ranch Read more

V-BAR-V Location
V-BAR-V Elevation

Featured Story

The 5th Grazing Livestock Nutrition Conference will be held this July at the Canyons Resort in Park City, UT.  The theme of this meeting is "Enhancing management, production, and sustainability of grazing ruminants in extensive landscapes." Noted scientists from around the world will discuss such...

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Did you know?

It has been estimated that a large plant of Sheep's Fescue (Festuca ovina), ~25ft in diameter might be 1000 years old!

Minerals are the primary component of soils. These minerals are from weathered rock, called parent material.

Ruminants have no incisors (teeth with straight cutting edges that are used to bite and tear food) in their upper jaw. Instead they have a thick dental pad.

Water dissolves more substances than any other liquid. Wherever it travels, water carries chemicals, minerals, and nutrients with it.

Locoweed has been reported to be the most widespread poisonous plant problem in the Western United States, responsible for the loss of approximately $300 million/year due to deaths of poisoned livestock.

Browsing herbivores have large parotid salivary glands which produce tannin binding proteins to aid digestion and large livers to detoxify allelochemicals.

Grazing herbivores have wide mouths and large jaw muscles to more efficiently harvest grasses.

Many foods, other than beef are made from by-products of cattle, e.g. marshmallows, ice cream, chewing gum and some candies.

You can make jelly, pie, or cobbler from the berries of the shrub, Algerita (Berberis trifoliolata).

Grasshoppers can consume approximately 20% of their body weight per day. In a South Dakota study, 20 grasshoppers/sq meter consumed approximately 0.4 animal unit month of forage (i.e. the average amount of forage consumed by a 1000lbs cow in a month).

It is estimated that 60 to 90% of net primary production on rangelands occurs below ground.

The top 4 inches of rangeland soil can potentially support 1.3 million individual invertebrates per square foot.