The virtual-fence know-how employed GPS, particular collars and audio to maintain cattle on the fitting grazing lands. Farmers set the fence boundaries, and the collars generated transient, 8,000-volt “electrical stimulus” shocks to cows that stray previous the fence. The collars additionally issued a short “sound stimulus” after the shocks.
Researchers searching for methods to handle wildfires earlier than they begin used the collars on 39 cows on Oregon State College’s experimental pasture in southeastern Oregon. The state has been plagued by wildfires in recent times, fueled partially by sagebrush habitats that burn and subsequently are invaded by nonnative grasses that outcompete native species, dry shortly and supply much more tinder for future fires.
Within the trial, the just about fenced cows grazed on a gasoline break inside a roughly 1,000-acre pasture for a month. Twenty-three calves additionally grazed, though they weren’t collared. Throughout that point, the cows ate 48.5 p.c of the grass contained in the gasoline break space. The overwhelming majority stayed throughout the perimeter, though cows with calves had been extra prone to stray as they adopted their non-collared calves.
Cattle grazing “is maybe the one instrument that may realistically be deployed at spatial scales massive sufficient to handle herbaceous fuels inside gasoline breaks,” the researchers write. Fireplace breaks created by the grazing herds can be utilized as staging areas by firefighting crews and assist cease hearth from spreading, they are saying.
However cattle alone can not cease sagebrush fires, Chad Boyd, a U.S. Division of Agriculture analysis chief who led the examine, mentioned in a information release. “Grazing shouldn’t be seen in absolutes,” he mentioned. “It’s one instrument that can be utilized together with every little thing else.”
These instruments can’t be developed too quickly: Thus far this 12 months, there have been some 54,000 wildfires in the USA, and so they have burned almost 7 million acres of land, according to the National Interagency Fire Center.