- Authors: Netherlands
- Appeared when crossed: Jonker van Tets x Note sleeve
- Synonyms names: Rolan
- Timing of ripening: Medium Power
- Type of growth: high
- Yield: High
- Purpose: Universal
- Mass of berries, g: on average 0.7 g, maximum to 1.5
- Epishers: Thick, straight
- Sheet: medium size, yellowish green, almost smooth, dense, concave
See all the characteristics
Roland variety is unpretentious variety of red currant. It is considered promising for the cultivation in the territory of the Russian Federation, is included in the 20 best varieties: it is distinguished by a stable yield, frost resistance, high immunity. Berries are used for making places, compote, jelly. In the sorted form use fresh – they are very tasty.
History of removal
Culture appeared in the Netherlands when moving varieties: Jonaker Van Tets and mouth slope.
Description of varieties
High bush, reaches 170 cm, compact, with age becomes empty. Thick and straight branches. The leaves are small, light green with light yellow, concave, with smooth and wide sheet plates. Blossom runs from late May until early June. Floral brushes up to 12 cm long, each appears on 20-30 reddish yellow buds. Adult shoots griest every year slightly, but at the end of the year young pigs grows at the end of the year. A variety has a high degree of regeneration. Fruption lasts about 25 years. The view is suitable for growing on a strain and chopler.
Characteristic of berries
The size is large: from 0.7 to 1.5 g, rounded shape, bright red, large seeds. Slightly unripe fruits are perfectly transported and about 2 weeks in a cold dry place are stored.
The taste is acidic, overres, becomes sweet, contain: 8.9% sugar, 23.7% vitamin C, have a characteristic currant fragrance.
Ripening and fruiting
Young plants start fruit on the 3rd year after landing. Berries can be filmed from the second half of July. The crop is not inclined to sickness, it can be removed by the mechanized method.
From one bush remove up to 6-7 kg.
Currant is suitable for cultivation in a temperate climatic zone: in Central and Central Russia. Some believe that you can grow several northwardly recommended regions, as it is planted in the northern and mountainous regions of Scandinavia.
Self-duration and the need for pollinators
A variety does not need additional pollinkers.
The species prefers nutrient soil with good drainage: black earth, loamy, sulace, rich humus with neutral or low acidity. Wetlands and close-sleeved groundwater will not fit. Water reservoir should be located at 1.5 m and deeper from the surface.
Saplings choose one or two years. For plants, a light place is suitable or with light shaping, protected from the north. Landing can be spent in spring and autumn. In regions with harsh winters, planted in April. For the area with a temperate climate, more suitable time is September. The landing pit is made of size: 40×60 cm, for 3-4 weeks before the event. Between seedlings leave a 150 cm distance. Between rows – at least 200 cm. The outlined ground is mixed with 4 kg of manure (or compost), superphosphate – 130 g, sulfate potassium – 25 g. If the substrate is very sour, add lime milk – 800 g per 1 kV. m, the substance can be divorced in a bucket of water and shedding the earth. Root neck are plugged at 6 cm. After landing, the seedlings are watered 10 liters of water, mulched by humus. Saplings for the winter must be stolen: the roots of the mulch layer, and the crown of agrovolok.
Growing and care
Watering is obligatory in the absence of rains. Young plants watered 1 time per week. Under one bush takes 5-7 liters. Adults are more resistant to the lack of moisture, they are enough to water 1-2 times a month. Necessarily irrigate during flowering and maturation. After watering the next day, the earth loose at a depth of 7-8 cm and remove weeds.
Feed twice a year: Before starting the vegetation in April, the urea solution – 10 g per 1 liter of water, contribute to 1 kV. M, then in early June – nitrogen compositions (compost, dung, chicken litter), after the harvest in mid-October – the potash-phosphoric mixtures. Extra -ornic method is treated in July: for this, a mixture of boric acid is used – 2.5 g, manganese sulfate – 7-10 g, copper vitriol – 1 g, molybdenum ammonium – 2 g, – all these substances are dissolved in 10 liters of water and spray foliage.
For the first 3 years, the currants do not cut down. The first trimming for the formation of the crown is recommended to be held early in the spring for the next year after removing the first harvest. Sanitary spend twice a year: in March – before the start of the Sokotiv region and in October – after the leaf fall. Be sure to remove branches older than 4-5 years. Adult plants recommend to tie or make a low support for branches.
Resistance to diseases and pests
Culture has a high immunity to pulse dee, anthracnose, septoriasis. From pests can be damaged by the kidney tick, a galloon and glass. For the prevention spray in spring until the leaf appearance of a copper vigorous. From pests recommend using biofungicides. To combat white spotty and gray rot, drugs are used: “Downtown”, “Homezin”, “Ftalan”.
Resistance to adverse climatic conditions
Winter-hardy variety withstands frost to -35 degrees. Currant is distinguished by drought-resistance, in addition, well tolerates high humidity and spring frosts.
Gardeners are often grown by this sale. The bushes are very large, do not hurt, the care of them is the most common, but they give a regular and good harvest. Berries collected in brush are very beautiful: Little grape clusters resemble.