Below is a list of frequently asked questions.
What is V10?
V10 is a natural crop protection agent based on cross-protection. Developed by Valto, it is used in the cultivation of tomatoes to combat pepino mosaic virus.
How does V10 work?
It works on the basis of cross-protection: by inoculating plants with closely related mild strains of the virus, the plant will exhibit fewer or no symptoms than if it were to be infected with an aggressive strain.
What is V10 used for?
V10 is used to protect tomato plants against the negative effects of pepino mosaic virus.
What are the most common symptoms of the pepino mosaic virus?
The pepino mosaic virus does not cause the same symptoms in every tomato plant. This has to do with the variety, the age of the plant and the conditions under which the plant is growing.
In a young crop, the first symptoms are nettle-like heads and bubbling of the leaves; in addition, the plants often have a pale colour. Older leaves get yellow spots, and chlorosis may develop between the veins. Then a mosaic or larger chlorotic mottling will be visible on the leaves. Necrosis on the leaves and stems is also an important symptom.
How infectious is pepino mosaic virus?
Pepino mosaic virus is highly infectious and spreads via infected equipment such as carts, scissors and knives. When the sap from an infected plant is transferred to a non-infected plant, the non-infected plant is also at risk of becoming diseased.
How is V10 prepared?
V10 is a liquid product and is diluted on a 1:10 basis with water.
How is V10 used?
To ensure effective vaccination, each plant must be treated. Rub the agent onto one leaf on every stem, just below the head and at medium height. Damaging the leaf a little will enable the V10 to be absorbed by the plant, so that it can do its job effectively. Also have a look at our sampling protocol or the instructional video.
When should I treat plants with V10?
Plants should be treated with V10 as early as possible. The earlier a plant is treated, the lower the chance that it will be infected with an aggressive Pepino strain.
Is the effect of V10 curative or preventive?
V10 is applied preventively. Plants vaccinated as soon as possible with mild strains will show fewer or no symptoms if they come into contact with an aggressive strain.
What is the dosage?
The dosage is 0.8 L V10 per ha.
Will the plant be inspected?
In accordance with the protocol, the crop is inspected 4-5 weeks after inoculation by sampling. The results of the sample analyses indicate whether the crop is protected against aggressive PepMV.
When are the plants protected?
The plant is protected from the symptoms of the aggressive virus about three weeks after treatment with V10, depending on the size of the plant.
Why two strains instead of only one?
Double protection offers growers more certainty than treatment with only one strain, because with only one strain there is still a realistic chance that the plants will be infected by one of the other strains.
Shelf life and stability
How should V10 be stored?
Store V10 in a cool place (4-10°C) in its original packaging.
How long can V10 be kept?
V10 is stable for up to three days after receipt. See label for more information.
How soon should diluted V10 be used?
Once it has been prepared, the agent V10 must be used within a few hours. We therefore recommend always working with small amounts of V10.