This Dutch breeding product has taken root well in Russia and the CIS countries. The variety is unpretentious in cultivation and has excellent resistance to various diseases, so it will be a godsend for beginners and experienced gardeners. More details about its characteristics can be found below.
Grade description
Corrado F1 (Carrodo) is a modern first-generation hybrid native to the Netherlands, which was included in the State Register of Breeding Achievements in 2015 for cultivation in 6 regions of Russia. Despite the fact that the variety appeared relatively recently, it has already become a favorite among many gardeners. This is due to its properties, which are presented in the table below:
Parameter | Description |
Ripening period | Corrado is one of the early varieties. Harvest can be removed on 80-95 or 100-105 day from the moment of emergence of shoots. Timing may vary depending on the specific climatic zone, since in the warmth the vegetable is gaining strength faster than in the cold. |
Leaf features | The plant forms hollow leaves, which are arranged in 2 rows - each subsequent row grows from the sinus of the previous one. In length, the leaves reach about 30 cm and are painted in a bluish-green color. |
The appearance of the bulbs | A vegetable with a powerful root system forms dense fruits with the following characteristics:
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Seeds | The sowing of this hybrid gives a large (up to 15 mm) hollow arrow, on the tip of which an inflorescence subsequently appears. At the end of the flowering phase, trihedral black seeds are formed in the bolls. |
Scope of application | Onions with a pleasant semi-sharp taste can be added fresh to salads, subjected to heat treatment in the preparation of various dishes, frozen and dried. |
Productivity and germination | On average with 1 square. m plot manages to collect about 8 kg of fruit. In winter crops from 1 hundred parts, it will be possible to get up to 350 kg of the crop, since the variety has high growth force and germination rate up to 96-100%. |
Growth Features | The hybrid has high immunity to various diseases, and also does not form an arrow. It tolerates temperature changes and is well adapted to various climatic conditions. It is medium-gredged and suitable for cultivation on a feather. |
Onion set is the name of the planting material, and not the name of the variety of onion. You can grow onion sets from any kind of onion, you just need to leave the onion arrow until a box of seeds (so-called blackberries) appears, which should be collected and planted. From each nigella, a set of onions will grow, and from each set of seeds, a full head of onion.
Landing time
They can be determined depending on the region of growing the vegetable:
- southern and central areas - Onions can be planted for the winter in October-November, when the temperature warms up to + 5 ° C (the culture will winter well, and with the onset of heat will bring friendly shoots);
- north - Landing should begin in the spring, when the weather warms up to + 10 ... + 12 ° C.
The optimum temperature for ripening onions is from +18 to 20 ° C. In warmer conditions and with a lack of moisture, the taste of the vegetable will deteriorate. If its ripening occurs at a temperature below + 18 ° C, the bulbs will lag behind in growth and undersize.
The culture can be grown in open ground. A greenhouse is useful only if you need to shoot greens throughout the spring-autumn period.
Planting Material Processing
As a cultivation of Corrado, you can use onion sets or seeds. In any case, when preparing it, it is required to take into account a number of rules, which we will consider later.
Onion set
It is classified by size and is suitable for planting in different periods:
Fraction | Dimensions | Landing time |
Shallow | 8-14 mm | Ideal for winter planting. |
Average | 14-21 mm | Suitable for winter and spring planting. |
Above average | 21-24 mm | When planting in winter, it will give a feather, and in the spring - a rich harvest of heads, but subject to favorable planting dates. |
Large | 24-30 mm | It has the same planting dates as the sevoc with dimensions of 21-24 mm, but the cost is lower. |
Sample | 30-40 mm | Used for planting on greens. |
Bulbs of any fractions should not be bought on the street, especially in cold weather. Such planting material is most likely frozen, so its germination will be spoiled. In addition, you need to pay attention to the fact that the sets have such characteristics:
- have a smooth surface devoid of any defects;
- are dry (without excess moisture);
- have a dense structure.
If the product is in its original packaging, the packing date and expiration date must be indicated on it.
Any set must be properly stored in a ventilated room at a temperature of + 10 ... + 15 ° C and humidity 70-75%. It is important not to allow shock changes in the microclimate, otherwise it will lead to the appearance of arrows on them.
Seeds
You need to buy them in a trusted store, giving preference to well-known manufacturers. On the label, you must definitely check the expiration date of the goods. After purchase, it is advisable to check the germination of seeds, following the following guidelines:
- Take 10-15 grains and place them in a glass or container for seedlings with a volume of 50-100 ml. Cover the bottom with filter paper or gauze.
- Pour the seeds with water so that they are slightly wet.
- Remove the container in a warm place and leave for 7-10 days.
- After the specified time, calculate the number of seeds hatching. They should be at least half of the total number of soaked grains (germination of at least 50%).
Soil selection and preparation
Under the bow you need to choose a site with the following characteristics:
- located on a small hill;
- protected from cold winds and drafts;
- it warms up well in the sun.
Hydride grows well on all types of soil, but prefers loose soils and loams with neutral acidity more than others. If necessary, it can be lowered with lime, but it is advisable to do this 2-3 years before sowing onions. The soil can also be pre-fed (for 1.5-2 years) humus.
You can not ignore the rules of crop rotation. It is best to plant onions after the early varieties of cabbage, cucumbers, zucchini and potatoes. Culture can only be returned to the same place after 3 years. It is also undesirable to grow it after legumes (peas, beans).
Experienced gardeners grow onions near carrots, as these crops perfectly complement each other and prevent the appearance of harmful insects. In order to scare onion flour along the perimeter of the garden beds, you can plant marigold and marigolds.
The marked area must be properly prepared. The specific list of actions depends on the landing method:
- Autumn. The soil must be mulched with foliage, peat and humus, forming a layer of 8-10 cm. This will protect it from freezing. 14 days before the onset of cold weather, remove the mulch and plant sowing in the ground, which again mulch.
- Spring. Remove the mulch prepared in the fall, loosen the soil with a rake and make grooves in it for sowing the bulbs.
Planting Corrado onion sets in the ground
A popular technology that can conditionally be divided into two stages.
Treatment
Proceed to it about a month before planting:
- Sort the bulbs - discard dried and injured specimens, and sort the remaining ones by size.
- Dry the seeds in a warm and dry place without drafts, and then warm them up so that he does not start the arrows prematurely. This can be done near a heating radiator or in natural conditions (under sunlight). For 14 days, keep the bulbs at a temperature of + 20 ° C, and then put them in conditions with a temperature of + 40 ° C for 8-10 hours.
- Before planting the bulbs, disinfect - for 2 hours immerse in a solution of copper sulfate (30 g per 10 l of water) and rinse under warm running water.
Landing
Sevc needs to be planted in beds, on which grooves should be done in advance. The landing scheme is as follows:
- the width between the holes is 8-10 cm;
- the distance between the rows is 20-30 cm;
- embedment depth - 3-4 cm for spring planting and 6-10 for winter.
Bulbs must not be soaked before planting. They need to be planted in the finished grooves so that the neck is below the ground by 1.5-2 cm.
Seedling method of cultivation
This technology allows you to get not only an earlier crop, but also more viable. Its implementation can be conditionally divided into several stages, each of which we will consider separately.
Seed treatment
The first step is to test the seeds for germination using the above technology. If this rule is observed, then the processing of seed should be started 2-3 days before sowing. If this step was skipped, then it will take about 14 days, since it is possible that the seeds do not meet the declared quality and will have to be replaced.
Proven seeds must be processed as follows:
- In a small container, collect warm (50 ° C) water and immerse seeds in it for 20-30 minutes.
- Cool the heated material slightly - hold it under running water for 2-3 minutes.
- If necessary, disinfect the seeds yourself - soak for a day in a weak solution of potassium permanganate and lower it for about 3 hours into a growth stimulator, for example, Ecopin.
- Wrap seeds in a damp cloth and transfer to a warm place. Every day they need to be checked for seedlings. When 3-5% of the seeds appear sprouts, they must be planted in the soil.
Sowing
Seedlings can be grown in boxes or cups that do not exceed 6–9 cm in depth and have drainage holes at the bottom. As the soil, you can use a purchased substrate or a self-prepared mixture of the following components:
- sheet land (1);
- turf (1);
- humus (1.5);
- river sand (0.5).
With the finished compound, it is necessary to fill the containers for seedlings and approximately 50-60 days before the seedlings are transplanted into the open ground (in April-May), proceed to sowing the seeds in the following order:
- Using tweezers, carefully place each seed in small grooves at a distance of 1.5 cm from each other.
- Sprinkle the seeds on top of the ground and cover with a film.
Growing seedlings
To get strong seedlings, you need to properly care for it, observing such measures:
- Creating an optimal microclimate. After sowing, transfer the seedlings to a warm place and keep them indoors at a temperature of + 18 ... + 25 ° C until the first shoots appear. Then lower it to + 14 ... + 16 ° C and remove the film, and rearrange the boxes in a sunny place. Thanks to these manipulations, the seedlings will not stretch.
- Watering. As the crust appears on the topsoil, moisten the soil with settled water at room temperature. In this case, you can not fill the earth, otherwise the roots will get rot.
- Top dressing. At intervals of 14 days, feed the seedlings with a solution of 20 g of superphosphate, 5 g of potassium chloride and 10 g of urea in 10 l of water. A simpler feeding option is diluted chicken litter in water (1:10).
- Hardening. 2 weeks before planting, take out the seedlings in the open air. The time of the first procedure is no more than 10-15 minutes. Every day its duration needs to be gradually increased.
Transplant to the ground
As soon as frosts pass, seedlings with 3-4 real leaves can be transplanted to a permanent place. Do it better in the afternoon. The substrate with seedlings should be moistened, each seedling should be taken out and the roots too shortened by a third. Landing is carried out according to this scheme:
- the width between the holes is 5 cm;
- the distance between the rows is 30 cm;
- embedment depth - 1 cm.
After planting, it is good to water and mulch the bed (for example, peat).
Landing care
Regardless of the method of planting, vegetation is required to competently take care of. What needs to be done for this, we will understand in detail.
Watering
After sowing, the culture should be immediately watered, and then for 2 months moisturized with a frequency of 1-2 times a week. This scheme should be adjusted based on specific weather conditions. For example, in the dry season, the frequency of irrigation should be increased, otherwise glycosides will accumulate in the bulbs, which will give them bitterness. In any case, for this procedure, it is necessary to use settled water at room temperature.
By the middle of the growing season, the frequency of irrigation should be reduced, and 2-3 weeks before harvesting - completely stopped.
Loosening and weeding
In order for the vegetable crop to develop normally, weeds must be removed from the garden bed about once a week. This procedure should be performed in the evening or in the morning (before the onset of heat) in dry weather. Together with weeding, it is necessary to perform shallow loosening of the soil. In this case, it is not necessary to spud onions.
Top dressing
With competent preparatory measures during the growing season, the culture will not need additional fertilizer. However, it can give signals indicating the need for additional nutrition:
- If the vegetable is stunted and yellowness appears on the leaves, it means that the soil lacks nutrients. To remedy the situation, a nutrient mixture of 10 g of ammonium nitrate and 15 g of potassium salt per 1 bucket of water should be added to the ground. This composition is enough to handle 1 square. m beds.
- If the greens grow dull, this indicates a lack of nitrogen in the soil. To stabilize it, you need to pour the soil with a solution of urea (10-15 g per 10 liters of water).
- If the feathers twist, then there is a lack of potassium. It can be replenished by adding a solution of potassium salt (5-7 g per 5 l of water).
Harvesting and storage
There are a number of signs that can help determine a ripened crop. It looks like this:
- the leaves turned yellow and fell to the ground;
- the formation of new leaves has ceased;
- the onion neck has thinned and softened;
- bulbs covered with dry scales.
If such signs are observed, in dry weather you need to start harvesting. This must be done manually, gently pulling the bulbs out of the soil, holding them by the tops.
The collected onions must be shaken off the ground and left on the bed so that it dries out a little. This will take about 2-3 days. If the weather is cloudy or rainy, you will have to dry the onions under a canopy or in the attic, however, this procedure will take at least 1-2 weeks. During this time, the crop must be regularly inspected and turned over. Trimming ponytails is not recommended - this can lead to rotting of the bulbs.
Dried onions must be stored in wooden boxes and stored in a well-ventilated room at a temperature of + 15 ... + 20 ° C. Subject to all storage rules, onions will retain their presentation and taste until the next harvest.
Pros and Cons of the Hybrid
The Dutch variety is revered by gardeners for such qualities:
- high yields (with a good wintering from one hundred square meters, you can collect 350 kg of fruits);
- resistance to shooting;
- good immunity to various pathogenic microorganisms;
- strong root system;
- almost 100% germination;
- excellent keeping quality.
Onions Corrado
As for the weaknesses of this vegetable, it can be noted its low adaptation to low temperatures. For this reason, it is best to grow it in the southern and middle regions, and not in the north.
Grade Reviews
Margarita Ivanovna, 59 years old. Sevoc of this hybrid has grown this year. The harvest was good, although it did not make much effort.The bulbs turned out beautiful, uniform and dense. The variety did not fail.
Anna Sergeevna, 37 years old. Onion Corrado did not particularly impress me. The bulbs grew moderately large and uniform, but their taste seemed too mild. Here, as they say, an amateur.
Dmitry Stepanovich, 45 years old. I bought a hybrid only because it is suitable for winter planting. I wanted to get an early harvest, which I managed to do. Planted sowing in the fall, and already in the spring plucked a friendly harvest of golden bulbs. Agricultural technology is standard, did not even have to feed him. I recommend to everyone.
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Popular onions include the Corrado F1 hybrid. He liked the gardeners for their unpretentiousness to external conditions, rapid germination, high productivity and good taste.