SIX MACHINES WORK AFTER DARK, moving through 200 acres of organic vineyard outside Hopland. Nobody sits on them.
They’re electric and weigh about 900 pounds each — roughly a tenth as much as a tractor and spray rig. Instead of a tank, they carry banks of UV-C lamps that damage the DNA of powdery mildew and botrytis on the vine canopy. No sulfur, no sprays.
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