Controlling Eastern Redcedar with Prescribed Fire

Prescribed Fire March 29, 2013 Print Friendly and PDF

 

The use of fire has decreased since European settlement due to fragmented landscapes caused by farming and over-use by livestock. This has resulted in a rapid change of landscapes, from open prairies or savannahs to closed canopy forests, and in many cases monocultures of eastern redcedar trees.

Fire Suppression

In prairies and shrublands, fire suppression resulted in an increase in both fire-tolerant woody plants that resprout, and fire-intolerant woody plants such as eastern redcedar and ashe juniper.

Fire suppression has resulted in a decline of habitat specialist wildlife species including the Northern bobwhite, lesser and greater prairie chickens and many songbirds. Fire is also very important for other wildlife species such as wild turkeys, white-tailed deer, and elk.

Restoring and Maintaining Landscapes with Prescribed Fire

Prescribed Fire
Lighting head fire during a controlled burn.

The most economically and ecologically sound tool to restore and maintain native landscapes is prescribed fire. The regular use of fire prevents invasion of eastern recedar into prairies, shrublands, and forests. Fire can also control resprouting woody plants when the frequency is at least every three years. Fire is an ecosystem driver that facilitates ecosystem processes, including nutrient cycling, water cycling, and soil health. Fire helps maintain watershed function, water quality, and water yield. In some cases, fire has been excluded for so long, that mechanical and/or chemical tools need to be used in the restoration process.

Mechanical Treatments

Eastern redcedar trees cut with a tree cutting attachment on a skid steer.

There are many types of mechanical treatments that will control eastern redcedar from hand tools to heavy equipment. However, mechanical treatments are very costly when compared to fire, and they do not offer the same ecosystem benefits. If fire is not part of the management plan, mechanical treatments have to be repeated very frequently, which can be very labor intensive and costly.

Small eastern redcedar infestations can be controlled by using hand-held shear/loppers, chainsaws, or brush cutters. These treatments need to be repeated at least every three years as new eastern redcedars will continue to rapidly invade.

Proper Grazing Management

Proper grazing management is mandatory to ensure that enough fine fuel is available to carry a fire and burn eastern redcedars. If eastern redcedar trees are not controlled, stocking rates need to be reduced frequently to account for the loss of grass. Eventually the eastern redcedar will become so thick that fire will not carry across the area, except under extreme wildfire conditions.

Heavy Infestations of Eastern Redcedar

Heavy infestations by eastern recedar are very expensive to control and require heavy equipment. Hydraulic saws and clippers will produce the best results, but can be time consuming unless it is hired out by a company or most of the managers time is spent cutting. Bulldozers can be very costly and cause soil disturbance, and are not recommended unless in extreme conditions. These treatments need to be followed by fire or the manager will be in the same situation.

The use of prescribed fire is the most recommended tool for eliminating eastern redcedar. A land management plan should exist on every piece of property to ensure the land is functioning at its highest potential.

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USDA / NIFA

This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.