UVH

UVH for vegetables

In vegetable growing, every healthy leaf counts. UVH suppresses diseases and keeps pests in check. An air flow sucks off the pests – without chemicals and without residues on the harvest.

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Research and practice

UV light against spider mites and mildew

2 %
of spider mite eggs hatched after UVH treatment. Without treatment, 66 % of the eggs hatched.
3× / week
night-time UV light worked as well as fungicides against powdery mildew in trials
6×
smaller dose works better at night than the highest dose by day
≥ 4 h
of darkness after treatment, so the fungus cannot repair the damage
Spider mite eggs hatched in the field

Untreated With UV light

Why at night?

The fungus repairs UV damage with the help of daylight. That is why we treat the crop at night. In the dark the fungus cannot repair the UV damage and has to wait for daylight. During this time the UV light takes effect.

Sources →

Why light in vegetable growing

Consumers increasingly demand chemical-free produce. UVH treatment can be carried out at night at any time between planting and harvest.

Pests usually sit on the underside of the leaves. An air flow moves the leaves so that the UVH reaches them there too. The pests are sucked off mechanically, without being able to develop resistance.

Suitable crops

Pests in vegetable growing

Whitefly
Larvae and adult flies sit on the undersides of the leaves. The air flow sucks off the pests.
Aphids
The aphids are sucked off by the air flow. The remaining aphids hiding between the leaves are then eliminated by the UVH.
Spider mites
Spider mites like it dry and multiply more under dry conditions. UVH controls both the mites and their eggs. The added spray mist limits the conditions for further multiplication.
PATRIK UVH with mist and tanks in a cabbage field at nightTractor with UVH unit driving between the cabbage rows at night

Use on the farm

The machine drives through the crop rows. Depending on the device and configuration, it directs the light onto the upper side of the leaves or, with the air flow, also onto the underside. To keep new pests from infesting the crops, treatments must be repeated at controlled intervals. UVH treatment makes the plants more robust, so they cope better with drought and any diseases.

Is UVH right for your farm?

Tell us which crops you grow and on how much land. We will reply with an assessment.

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