Tree planting with drones already in Australia
19 October 2017
...
“It’s not just trees — a healthy ecosystem has a variety of species that have to be planted,” he said. Then, a planting drone is loaded with biodegradable “pods” that contain seeds and a nutritional mixture to help them germinate.
Flying 10 feet above the ground, the drone fires the pods at the ground with enough force to penetrate the soil.
This approach isn’t theoretical – it’s being used today.
The company completed a planting project in Australia in May and is “pretty much oversubscribed for the next year,” Mr Fletcher said, with projects in Myanmar, the Philippines and the UK.
Re-foresting efforts in Canada, Brazil and the Us are on the horizon.
“With our system, two people will be operating a small swarm of drones, and they will be able to plant 100,000 trees a day,” he said.
“If you get 600 teams working around the world, we will be able to plant a billion trees a year — and that’s a scale that makes a difference.”
Not all the seedlings survive, but Fletcher said his method has comparable survival rates to hand-planting seeds, which vary from 20% to 70%, depending on the species.
Mainly, it’s cheaper and faster, which allows for many more trees to planted in a given time period. And speed and scale could be a game-changer for temperate areas.
“Planting trees has a very limited season, depending on where you are in the world,” Mr Fletcher said.
“If you’re in the northern hemisphere, the Canadian Rockies, you’re lucky to get a couple of months.”
Drones also have the advantage of access: Unlike humans, they can plant on dangerously steep inclines or at forbidding altitudes.
“If you could plant 60 times what you’re doing today at five times cheaper, you can imagine how much restoration work you could do,” Mr Fletcher said.
…
https://www.timberbiz.com.au/tree-planting-with-drones-already-in-australia/