Raspberry Unattainable (R-34): features of cultivation
Unreachable (R-34) repairing raspberry variety will surely appeal to gardeners who wish to feast on delicious and sweet raspberries for as long as possible. In one season, two crops are harvested from the bushes, and the second collection in the middle lane is carried out with a yield of 80–90%. What is noteworthy is the relatively early fruits of this plant, and how to properly organize care for them for maximum benefit - this will be discussed in the article.
Raspberry remontant R-34, or Inaccessible
The history of the distribution of the Inaccessible variety by country began back in the 80s. last century, and in 1988 at the Moscow Institute of Horticulture presented a new cultural variety of raspberries, the author of which was V.V. Kichina. The number R-34 was assigned to the variety in 1990, and since 1992 the variety has already been actively used for propagation.
The external characteristics of the raspberry bush and its fruits often play a primary role in choosing seedlings of a particular crop, therefore, when evaluating the qualities of R-34 raspberries, it is worth studying all its characteristics, paying special attention to the advantages and disadvantages of the plant.
Did you know? The productivity of raspberry bushes can be increased by planting them near the bee apiary. As practice shows, the active fruiting of the culture increases by 60-100%.
The appearance of the bush
The new plant is a powerful bush with sprawling and rather large shoots, the length of which reaches 1.4 m. From one plant, 5 to 7 replacement branches and the same number of root offspring are formed. All of them are elastic, strong, with shortened internodes.
The color of the bark is light brown, with a slight yellow tint. Wax coating - insignificant, spikes - evenly dispersed over the entire surface of the shoot. The middle leaves of the shrub are characterized by a bright green color, flat and slightly folded down by a leaf plate (the edge is predominantly urban).
Characteristics of berries, fruiting time, yield
Ripening obtuse and slightly elongated berries of the Unreachable variety are large and their weight averages 4–8 g. At the stage of complete botanical ripeness, the fruits have a characteristic ruby hue with a shiny glossy surface.
Under medium-thick skin there is a dense, sweet and sour flesh with a rich aroma. The core bone is small and almost invisible during eating. The arrangement of fruits in the brush is friendly: they seem to support each other.
Subject to the requirements for planting and further care for the plants of the raspberry in question, it is possible to collect 3-5 kg of fruit from one bush. The first time fruiting begins in mid-July, and the second time the berries are picked from early August to September 10.
Advantages and disadvantages of the variety
Like any other repairing raspberry variety, the Inaccessible has advantages and disadvantages.
- The first group of characteristics includes:
- large-fruited bushes;
- earlier onset of fruiting;
- high resistance to ailments and pests;
- excellent mobility of the harvest;
- high resistance to many fungal infections and crop pests;
- excellent taste of berries;
- good productive qualities of raspberry bushes.
- As for the negative points, when growing a repairing variety R-34, you need to be prepared for:
- a possible violation of the taste properties of berries due to sudden changes in weather conditions in the region of growing shrubs;
- the need for regular removal of lateral growth, which quickly grows in the area;
- poor resistance to drought (in the southern regions, the plant will definitely need shelter);
- a possible fight against chlorosis, which develops on raspberries with a lack of nutrients or a limited amount of natural light in the area.
High merchandise qualities of fruits can also be considered as a dignity of the variety, since all berries have almost the same size, shape and color, and of the shortcomings, individual gardeners note the possibility of shedding part of the crop with excessive ripening.
Video: the best grade of repair raspberry R-34 (Inaccessible)
Features of agricultural technology
The agricultural technique of cultivating repair raspberries R-34 provides for the correct selection of a site for planting a plant, the implementation of all planting measures in accordance with the needs of the seedlings, and the proper organization of further care for the bushes. Of course, each of these actions has features that are worth knowing at the planning stage of planting events.
Raspberries are usually planted in an open area in the spring, although in the southern regions it is possible that the procedure can be performed in the autumn (September or early October). In any of these cases, the primary action of the gardener will be the selection of a suitable place for the culture to grow and its preparation.
Plants of the R-34 variety are demanding on the nutritional value of the substrate, so for them it is worth choosing sites with good water permeability and high humus content. It can be black earth soils or light loams, with a level of groundwater not closer than 1.2 m to the surface of the earth.
In addition, for the organization of raspberry trees, territories closed from cold gusts of wind, with sufficient sunlight, are ideal. It is possible to plant seedlings along fences, in the corners of a large garden or along individual outbuildings that can protect the culture from the wind.
Important! To avoid the defeat of raspberries by verticillosis, it is not recommended to place seedlings in the vicinity of blackberries, rose hips, apple trees and stone fruits. Potato, tomato and eggplant beds should also be avoided whenever possible.
To increase the chances of planted seedlings for quick and effective adaptation in a new place, it is worth preparing the site correctly. For spring planting, the area under the raspberry is developed from the fall, and for the autumn planting - a few months before the planting is carried out, it is necessary to fertilize the soil with nutrients.
A more detailed description of the preparatory measures depends on the method of planting: bush or trench.
In the first case, for each individual plant, it is necessary to arrange a landing hole with a width of about 50 cm and a depth of at least 30 cm, and mix the top soil layer dug from the pit with 5-10 kg of compost, 1 cup of phosphoric flour and the same amount of potassium sulfate. For acidic or peaty types of soil, adding 100 g of lime per planting hole will be beneficial.
When trenching the raspberry bushes of the cultivar, the unattainable width of the organized trench should be 50-60 cm, with a depth of at least 40 cm. 120 g of superphosphate, 30 g of potassium salt, 300 g of wood ash are added to 1 m² of the territory. However, the given fertilizer values are rather averaged, since the initial soil fertility plays a large role in their calculation.
Landing and care
For the R-34 raspberry variety, a compacted planting pattern is permissible, in which 0.7–1.4 m is left between adjacent seedlings, depending on the row spacing and the overall size of the area under the raspberry.
Gently filling the rhizome with soil, make sure that there is no free space between the individual roots, and the root neck of the plant rises above the surface of the substrate.
Upon completion of the planting measures, it remains only to water the young raspberries and, if necessary, to mulch the near-stem zone with a 5-centimeter layer of wood sawdust or peat. Further landing care will be based on the following actions.
Regular moistening of the soil under the shrubs is a prerequisite for the cultivation of raspberries cultivars Unattainable, therefore drip irrigation systems are often installed near plantings. The frequency of procedures depends on the climatic conditions in a particular region, but on average, raspberries are moistened at least 1 time in 10 days, and the liquid should pass to a depth of 30-40 cm.
During the flowering of raspberry bushes, as well as during the growth and ripening of berries, watering is especially important, therefore, at least 2 buckets of water are consumed per plant. In addition, if the fall season turns out to be arid, you will have to carry out pre-winter water-charging irrigation with the substrate moistened to a depth of 60–70 cm.
The type and specific period of the nutritional composition depends on the stage of development of raspberries, therefore gardeners recommend to adhere to the following feeding scheme:
- In March, complex mixtures with a high content of nitrogen, potassium, and phosphorus are appropriate, which means that you can prepare a nutrient mixture of 3 tbsp. l Kemira preparation and 10 liters of water (1 liter of ready-made solution is consumed per bush) or use 15–20 g of ammonium nitrate dissolved in the same amount of liquid (the amount of ready-made solution is enough for 1 m²).
- Before flowering repairing shrubs, they are fed a mixture of 3 tbsp. double superphosphate, 2 tbsp. potassium sulfate, previously dissolved in a bucket of water. As in the previous case, the resulting solution will be enough for 1 m² of stands.
- After harvesting, the thawed bushes respond well to fertilizer with humus or compost, which are simply scattered under the plants with a 5-centimeter layer.
- In the summer, you can scatter wood ash or bone meal over the territory at the rate of 50-100 g per 1 m².
To improve air exchange between the rhizome of the culture and the external environment, it is important to perform periodic loosening of the soil. Usually this procedure is carried out shortly after the next wetting of the substrate, since it is at such moments that it lends itself better to similar treatments. The glanders angle is deepened by a maximum of 10 cm, so as not to touch the small roots and not damage the aerial part of the bush.
In regions with hot and dry summers, upon completion of cultivation, you can cover the soil surface with a 5-cm mulching layer, the role of which is suitable for sawdust. In the future, it is changed as necessary: on average, at least once a month.
Did you know? On the territory of modern Russia, the first raspberry plantations appeared only in the XII century, thanks to the order of Prince Yuri Dolgoruky. In the future, the popularity of berries only grew.
Pest and Disease Control
Despite its high resistance to many raspberry ailments, the unreachable repair grade cannot be called completely hassle-free.
The slightest violations in agricultural technology can lead to the appearance of the following pests and diseases:
- Raspberry stem fly. This small gray insect lays eggs in the apical leaf sinuses, as a result of which the resulting voracious larvae bite into the stem and lead to decay of the shoots. To get rid of the pest, the bushes are treated with the “Karbofos” preparation (75 g per 10 liters of water) during the budding period, and during the growing season they use mechanical control, cutting off the damaged shoots until there is no hole left by the insect.
- Raspberry beetle. Black-gray insect with body length up to 6 mm.Gnawing holes in the buds or tissues of leaf plates, the females lay eggs in them so that the appeared larvae can eat raspberry juice, causing significant harm to the plant. You can notice the pest by the characteristic small holes on the indicated parts of the raspberry bush, and in order to eliminate the problem, they are treated with Fitosporin before flowering of the bushes (4 ml per bucket of water). Before budding, the soil under the bushes is dug to a depth of 15–20 cm.
- Raspberry stem gall midge. The insect is in the form of a small mosquito, 2-3 mm in size. The pest larvae are slightly smaller than adults, and it is not so easy to notice them. Developing under the bark of shoots and eating the juice of the culture, they cause small swelling in different places, from which cracks will form later. As a result, the shoots weaken and dry. In the fight against gall midge, the drug “Karbofos” (75 g per bucket of water) is successfully used, and it is better to spray the plants with a ready-made solution before flowering begins. Having discovered insects during the growing season, you will have to cut and burn all the branches affected by the pest.
- Gray rot. A common disease characterized by the appearance of a fluffy gray coating on any part of the bush, including the fruits. To eliminate the problem, the drug “HOM” (30–40 g per bucket of water) and the fungicidal composition “Teldor” (5 g per 4–5 l of water) are used. In the first case, spraying the bush is performed before the leaves bloom, and in the second case, the plant is treated after flowering.
- Anthracnose. It is clearly visible on gray spots bordered by a purple edge. All of them are scattered on the surface of sheet plates, grow rapidly and as a result lead to their twisting and falling. Given the complexity of the treatment of the disease, you will have to apply three times the treatment: before flowering (using a urea solution, 20-30 g of which is previously dissolved in a bucket of water), before the flowers bloom (spraying is carried out with a 1% solution of Bordeaux mixture), after flowering (processing is suitable fungicidal composition "Kupricol", but not more than 40 g per 10 l of water, with further watering of each bush 2 l of the finished mixture).
- Chlorosis. It is the main cause of yellowing of leaves in the middle of summer, and if at the initial stages the appearance of bands along the veins is observed, then in the future they will only increase. Often, young shoots and berries suffer from chlorosis: the former stretch out, and the latter dry out completely. To solve the problem, in July or August, the affected raspberry bushes are uprooted and burned, since there is no other effective means of preventing massive garden damage.
- Root cancer. It is characterized by the appearance of dark brown growths on the shoots, due to which their growth is reduced. As in the previous case, the most correct solution would be to uproot the affected bushes and burn them further, which usually occurs in autumn or spring.
To minimize the likelihood of each of these problems occurring, the preventative requirements should be followed, which are:
- Autumn digging of the soil under the bushes;
- collecting and burning all plant residues, especially if they have traces of the development of diseases or pests;
- timely sanitary pruning and rationing of root shoots;
- following crop rotation rules, taking into account suitable and not suitable predecessors for raspberries;
- control of soil moisture (with waterlogging, crushed charcoal can be scattered under raspberry bushes, which quickly absorbs excess water);
- timely removal of weeds and thinning plantings;
- spring prophylactic treatment with 1% Bordeaux mixture or copper chloride;
- preliminary preventive treatment of rhizomes of seedlings with 1% solution of copper sulfate.
Important! Any spraying with chemicals is possible only before flowering and especially fruiting of raspberry bushes.
When growing almost any repairing raspberry variety, a trellis installed between the bushes will be most welcome. It not only improves the air circulation between the individual branches of the bush, but also helps to increase productivity, not to mention the ease of access to plants during care.
According to gardeners' reviews, for the R-34 variety, a single-cavity design is suitable, represented by pipes placed opposite each other, with laces stretched between them.
The shoots are tied to them, however, with a minimum distance between the twines, you can simply stick the branches into the formed space, where they will be held without additional fixation.
Pruning and wintering
Pruning raspberries of the Unreachable variety is performed in order to form the correct bush and remove damaged or weak shoots. Spring normative procedure is carried out before budding, and as a result of its holding on the plant there are no more than 6-7 shoots, which is enough to get a plentiful harvest of berries.
If frozen or broken branches are found during such pruning, then they must be removed. As for the autumn procedure, then the gardener must decide exactly how many crops he wants to collect from one bush.
If only summer abundant fruiting is of interest, then before wintering you need to cut all the shoots, up to the soil line. To collect two harvests of R-34 raspberries, full cut should be avoided, limited to repeated sanitary measures with further shelter of the connected branches of the bush for the winter.
When growing the raspberries in the northern regions, even after a complete cut of the shoots, it is better to cover their place of growth with agrofibre or other covering material, which can provide optimal warming of the root system of the culture and protect it from possible freezing of the soil.
You can protect the last ripe berries from frost by throwing on the bush a breathable covering material (for example, spanbond). Shelter is removed with the arrival of steady spring heat.
Harvesting and storage
Usually, berry picking occurs in late July or early August and lasts until the fall. Harvesting is done manually, carefully separating each individual berry from the stem.
Wooden containers covered with paper are suitable as storage containers with filter holes on all sides, but to keep raspberries lying as long as possible, it is better to take the containers out to the cold (ideal temperature values at the storage location should be at + 3 ... + 7 ° C) .
Shelf life of harvested fruits without loss of commercial quality does not exceed several daysthen soft berries will have to be frozen or put into conservation. For short transportation, correctly picked and boxed berries of remont raspberries will not lose their marketability, but you will have to use freezing for long-term storage and long-term transportation.
The repairing raspberry variety R-34 (Unattainable) can be an excellent option for growing in any household plot, especially when it comes to the central and southern regions of Russia.