Content
Mid-early potatoes of the Kurazh variety are gaining popularity due to their taste characteristics due to the high percentage of starch. Farmers choose the variety for its disease resistance.
Origin story
The authorship of the potato variety Courage belongs to the famous Dutch company HZPC Holland B.V. The variety has been registered in Russia since 2007 and is recommended for all central regions. Now the seeds of the variety are offered by a number of farms from the Leningrad, Omsk, Kirov regions, Tatarstan, Chuvashia, and Udmurtia.
Description and characteristics
Growing season | Before the start of ripening 75 days, technical ripeness phase 80-90 days |
Aboveground part | The stems are medium-sized and tall, straight and semi-erect. The leaves are medium and large, slightly wavy along the edges. Flowers red-violet |
Tubers | Round-oval, few ocelli, moderately deep |
Peel | Smooth, reddish |
Pulp | Light yellow color, dense structure |
Starch content | 13,0-19,9% |
Dry matter content | 22-23% |
Weight of marketable tubers | 100-145 g |
Product output | 83-99% |
Quantity in slot | 6-9 pieces |
Productivity | 159-270 c/ha, maximum – 435 c/ha |
Rest period during storage | 91% |
Features of the growing season | Drought resistance |
Disease resistance | Immune to potato cancer, scab and virus, not infected by golden nematode. Moderately susceptible to late blight of tubers - 5 points, for green mass - 3 points |
The taste of the Kurazh potato variety is rated as good and excellent. The tubers are boiled and retain a pleasant light color after heat treatment. True, not all vegetable growers agree that Kurazh potatoes are crumbly. This property of tubers depends largely on the variety, but also on the weather and fertilizing:
- Too much fertilizer increases the mass of the tuber, and starch does not have time to form;
- There is more starch in those tubers that developed primarily in dry weather.
Tubers of the Kurazh variety tolerate mechanical damage without darkening the flesh and are subject to long-distance transportation. Suitable for purees, making chips, starch.
Advantages and disadvantages
Advantages | Flaws |
Excellent consumer qualities: smooth tubers, pleasant taste, starchiness | Shorter shelf life than other early varieties |
Transportability |
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Drought resistance | Rapid decrease in yield if planting material has low reproduction rate |
Immunity to a number of dangerous cultural diseases | Susceptibility of tops to late blight |
Landing
Potatoes of the Kurazh variety are planted in April or May, when the soil to a hole depth of 8-10 cm warms up to +8°C. The tubers selected for planting weigh on average 50-70 g, small ones are used, from 25-30 g, but healthy, without damage. Starting from the middle or end of March, planting material is sorted out after storage and germinated. The temperature in the room where potato vernalization takes place is 12-15°C. The sprouts grow by 1-2 cm.Large light sprouts may break when planted. To prevent them from overgrowing, Kurazh seed potatoes should not be kept for a long time at temperatures above 16°C.
- Optimal layout of potato nests: 60-70 x 30-35 cm;
- The best predecessors are all grains and legumes, perennial and annual grasses;
- On sandy soils, it is good to plant Kurazh potatoes after lupine;
- Those areas where sunflowers were grown last year are too depleted. Potatoes are planted on them only after the autumn application of a complex of fertilizers.
Care
The variety Kurazh is drought-resistant. The plant can develop successfully during short periods of heat, but during prolonged drought the potatoes must be watered. The plant especially needs moisture during the budding phase and after flowering. During very hot periods, the bush requires 12-20 liters of water, in normal weather - 3-6 liters. The area with Kurazh potatoes is regularly cleared of weed and loosen the soil, especially after watering and rain, so that a crust does not form on the surface of the soil. Air is necessary for plant roots to function normally.
Hilling and feeding
Potatoes Kurazh are hilled 2-3 times after rains or watering before flowering. The first hilling is possible even during planting, when forming a ridge that will protect the seedlings from late frosts. Usually, potatoes begin to hill when the sprouts reach 10-12 cm.
If the tops develop poorly, foliar feeding is carried out at this time. At the beginning of potato growth, the Kurazh variety is fertilized with urea, ammonium nitrate, and potassium sulfate.The second time, you can carry out foliar feeding or fertilize with mineral complexes.
Diseases and pests
Diseases/pests | Signs | Treatment |
Late blight | There are dark spots on the leaves, which are later covered with a gray coating. In cool weather, no higher than +10°C, the fungus takes over the entire area in a matter of days. Later the tubers are affected and rot | Spraying sprouted tubers with growth stimulants, which allows Kurazh potatoes to develop faster and avoid infection. Preventive treatment with fungicides. Burning the remaining stems |
Alternaria blight | Dark dry spots on the leaves in dry weather, with a lack of moisture, spread to the stem, the plant dries out. There are rotten spots on the tubers. Productivity decreases due to the death of the green part | The disease often affects tomatoes, so potatoes are not planted nearby. Fungicide treatment. The stems are removed and burned. The disease is caused by an imbalance between insufficient nitrogen and potassium in the soil and excess phosphorus |
Verticillium | Develops at a temperature of 17-22°C, in the flowering phase. The leaves turn yellow and curl. The plant dies. Sometimes the disease manifests itself already on the sprouts. Tubers are wilted, with lesions | Maintaining crop rotation. The stems are mowed 10 days before harvesting. Tubers are dried and sorted before storage |
Wireworm | The larva of a click beetle that damages tubers and roots | Destroy areas of wheatgrass where the pest lives. In early spring, bait is laid out: 3 tubers per 1 square meter. m |
Harvesting
Kurazh potato stems are mowed 7-10 days before harvesting for better ripening and prevention of possible infection.After digging, they dry for several hours in the field, then put them in a dark room. Before storing it, they sort it out again.
Conclusion
The universal potato variety Kurazh is attractive for its resistance to dangerous and common diseases. The variety is suitable for cultivation in private farms. Potatoes are in demand in large volumes at processing plants.
