- Authors: Japan, Ishikawa
- Appointment: dining room
- Berry color: red, pink
- Taste: with high sweetness, with low acidity, without astringency
- Ripening period: early
- Frost resistance, ° C: -22
- Name synonyms: Ruby Roman, Roman Ruby, Ruby Romantic
- Bunch weight, g: 450
- Skin: medium thickness
- Year of approval: 2007
Today they say that this variety has become the most expensive. You can try to grow it on your own plot and achieve good results, the main thing is to follow the rules of agricultural technology.
Breeding history
The Roman ruby (Ruby Roman) was introduced in Japan in 1994, namely in Ishikawa. In 2007, it was approved for use and sold around the world.
Description
In our country, this table variety is also grown, and gardeners show good results. It should be said that this species is quite capricious, so novice gardeners cannot always cope with the task at hand.
There are licensing restrictions on distribution, many experienced gardeners do not stop talking about the need to improve the technology for growing this variety.
Ripening period
Ruby Roman's fruits ripen early.
Bunches
The bunches can weigh up to 450 grams. In Japan, these berries are sold in a packaging box, each with a seal indicating that it matches the quality of the product.
Berries
The fruits grow large, with a slightly oval shape. Each weighs about 20 grams. When ripe, the berries have a red or pink hue. The sugar level is 180-220 g / dm³.
This variety is subject to a standard that is evaluated in five grades. If the fruits do not match, then they are not supplied for sale.
The skin of the grapes is medium in thickness, the flesh is uncolored inside. The fruits are firmly attached to the stalk.
Taste
The taste of the variety is quite sweet, there is a slight pleasant sourness. Astringency is absent.
Yield
Productivity largely depends on the quality of care and weather conditions, so there is no exact data.
Growing features
This variety is quite difficult to grow to premium. He is capricious, you need to constantly monitor the amount of nutrients in the soil, the level of moisture. Moreover, it is very important to choose the right landing site. This is usually a sunny area with a slight slope, where there is no draft. Failure to comply with at least one of the requirements will lead to the fact that the fruits will not meet the standard. However, if you grow it for yourself, and not for sale, then all these conditions are not so critical.
Mulching is essential, it will help improve the quality of the soil and add nutrients to the soil. And this plant really needs them.Mulch with compost or pine bark - this will protect the root from temperature fluctuations and prevent moisture evaporation. Among other things, mulch inhibits the growth of weeds.
Landing
The grower must provide support to the plant. The tapestry can be made of plastic, metal or wood. It helps the bush to support the weight of large fruits in the last stage of ripening.
For planting, as in the standard version with other varieties, a special pit is organized. Its dimensions should be twice as large as the size of the seedling rhizome.
Pollination
There is little information about the variety, the technique of caring for it is being improved today. It is better to provide the grapes with additional pollination.
Pruning
Pruning is also necessary, but should not be pruned before the first frost. The grower must first give the plant time to take root and develop the necessary root system.
When pruning is done, only two eyes are left per vine. This is important for controlling the growth of the plant, helping to make it more compact. In addition, this method stimulates fruiting.
Watering
The plant should not be stressed. Thus, it is required to water it regularly, but make sure that there is no waterlogging of the soil.
Top dressing
There are controversial opinions as to whether it is necessary to put additional fertilizers in the holes or not. If the soil is already fertile, then it is better to apply top dressing a year after planting, in portions.
Frost resistance and the need for shelter
Frost resistance is at -22 ° C. If you try to grow grapes in an area where the air temperature can drop below this indicator, then a shelter is necessary.
Diseases and pests
The best way to protect a plant from pests and diseases is to carry out preventive treatment several times during the growing season. It is worth treating with fungicides, insecticides, you can use copper sulfate or garlic tincture.
If a grape is exposed to any disease or insect, this always affects its appearance.
Storage
Under proper storage conditions, such grapes can lie in the refrigerator for a long time and not lose their presentation.