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Tree Sheriff
Thumbnail portrait of engineer "Tree injection has been around since da Vinci and it hasn’t changed much since then," says David Floyd. "You drill a hole and inject fluids that kill pests and do other good things."
Charged with fixing the technology’s lingering problems, David designed a device that would make a space cowboy proud.
"It takes all the guess-work out of tree injection," he says. He solved one big problem with a gauge that measures fluid pressure under the bark. "You can actually watch the tree take the fluid in and stop before you damage it by injecting too much," he says.
Arborjet’s "plant microinjection system" also makes smaller holes that heal over quickly so the bad guys can’t return after the sheriff leaves town.

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