Buzzing like a giant insect over the verdant Moselle Valley, a drone sprayed fungicide over rows of vines.
Luxembourg wine producer Corinne Kox began trials of the small uncrewed aircraft last month over part of her century-old family estate near the borders with France and Germany.
The test drone, guided by a pilot operating a digital control panel on the ground, sprays more accurately and less wastefully than a helicopter, which her family sometimes uses, she said.
Kox, who is in her late 30s, is among the trailblazers in Europe deploying drones in wine production.
“It gives us some flexibility, especially on the slopes,” she told reporters.
“With a tractor, it is sometimes dangerous to drive right after a rainfall because it slips,” said Kox, who is gradually assuming management of the 10-hectare estate from her father.
Drones have been in use in California’s Napa Valley vineyards for some years.
In Europe, drones have been used in Switzerland for about three years and in Germany since last year, French viticulture expert Robert Verger said.
“In France, all aerial treatments in agriculture are forbidden, and the drone is classed as aerial treatment,” Verger, of France’s leading FNSEA agricultural union, said.
Above Hettermillen village on the Moselle River, Domaine Kox sprawls over lush green limestone slopes, where grapevines have been cultivated for 2,000 years.
Born in 1919, Kox’s late grandfather, Francois, launched a grape production business on the estate and her father and mentor, Laurent, turned it into a sophisticated vineyard and winery in 1977.
Kox produces white wines from Riesling, Pinot Blanc, Auxerrois and Gewuerztraminer grape varieties. They also turn out a few sparkling wines as well as reds.
With a wingspan of nearly 1.5m and eight propellers, the drone buzzed a meter or so above the vines, its two flashing green lights protruding like antennae.
It sprayed a liquid mix of sulphur and copper over the green leaves.
After flying for about five to six minutes, the drone returned to recharge its batteries and refill the plastic tank with 10 liters of fungicide.
It can fly in automatic mode on a pre-determined route, or be guided by the pilot on the ground.
In conditions like those of the Grand Duchy’s vined slopes, the drone can be an advantage, said chief editor of Luxembourg’s specialist Vinorama magazine, Erwan Nonet.
“Luxembourg’s average vineyard gradient is the highest in the European Union,” he said.
Wine growers and farmers find it safer to use drones to spread fungicides and other chemicals to protect crops, Verger said.
They are “not in contact with the product” and less likely to have an accident, he added.
Carrying out the trial at the Kox estate is private aviation operator Luxaviation Drones, founded in Luxembourg in 2008, which supplies the drone and pilot.
“There are other winegrowers who are interested in drones,” Luxaviation director Christophe Lapierre said.
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