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Growing tomatoes using Dutch technology is becoming more and more popular. What is the essence of Dutch technology?
- The main varieties for cultivation
- Soil selection and preparation for planting
- Necessary growing conditions
- Tomato care
The main varieties for cultivation
It is better to use medium-sized or tall varieties for growing. The following varieties grow well in greenhouse conditions:
- Raisa. Indeterminate hybrid. The fruits are medium in size. Each cluster has 4-6 fruits of a round shape, dark red in color. The weight of one tomato ranges from 140-160 g. It is recommended to grow in heated glass greenhouses.
- Hanni Moon. It is an indeterminate variety. Ripens within 65 days. Fleshy and sweet pink fruits weighing about 200 g. When ripe on the stalk without a green spot.
- Camry. Tall variety. Designed for indoor cultivation. The ripening period is 90-100 days. Fruits are round, red, weighing up to 200 g.
- Debut. Determinant type. The bush grows to a height of 75 cm. Characteristic difference: early ripening and long fruiting period. The average weight of fruits is 180-200 g. From one bush, you can collect up to 4.5 kg.
- President 2. Hybrid indeterminate variety. The first fruits ripen 2.5 months after planting in the ground. Resistant to many diseases. Fruits are bright red with dense pulp weighing about 300 g.
- Cardinal. An early ripening hybrid. Refers to the type determinant. Tomatoes are smooth, red. The weight of one is about 200 g. Up to 5 kg of the crop can be harvested from a square meter.
These varieties are mainly intended for cultivation in greenhouse conditions, but with proper care, seeds can also be planted in open ground. When choosing a tomato variety for growing according to Dutch technology, it is necessary to take into account the ripening time and resistance to possible diseases.
Soil selection and preparation for planting
Regular soil for planting seedlings will not work. Place mineral wool in the prepared containers, pre-soaked in water with the addition of nutrients. Further, a complex fertilizer is applied for the growth of green mass and the formation of fruits. You can grow it at any time, however, the ripening period will be different depending on the period of the year. In winter, growing seedlings takes about 2 months, in spring from 1.5 to 2 months, and in summer, the time is reduced to 1-1.5 months.
Sowing seedlings can be carried out both in the ground and in special containers with drainage holes. A couple of days before sowing, the greenhouse is heated. It is important that the soil warms up to 16 degrees at the time of landing. The soil must be covered with plastic wrap before planting the seedlings. This must be done in order to prevent the growth of weeds.
After sowing the seeds, sprinkle on top with sand or vermiculite. The top layer should be about 1.5-2 cm. When transplanting seedlings, it is important that the roots do not intertwine. An individual plant is watered with salt water after transplanting. This procedure should be done carefully so as not to damage the small leaves. For this purpose, a drip irrigation method or a hose is used.
2-2.5 sprouts are planted per square meter. In well-lit places, the density can be 2.4-2.5 plants. The distance between the rows should be 70-90 cm, and between the seedlings - 50-55 cm. The containers with seedlings are placed so that the edges are 2 cm above the ground level.
Necessary growing conditions
The room where the seedlings grow must be well ventilated. The air temperature should be at least 18 degrees, during disembarkation - at least 16 degrees. If the temperature is lower, then this room is heated. The location for the greenhouse should be chosen so that it is closed from drafts.
Air humidity should be within 65-75%. If the humidity is lower, the tomatoes will become hard. To maintain air circulation in the greenhouse, special fans are used. At the same time, it is important to water the plants in a timely manner. Carbon dioxide is used for the photosynthesis process. For this purpose, a generator is installed, which supplies carbon dioxide in a certain amount.
With proper care of tomatoes grown according to Dutch technology, a large harvest can be reaped. Plants should be taken care of immediately after planting in the ground. To ensure uniform watering, a drip system is used. It is important to take into account the air temperature, the activity of the sun's rays, the humidity and the temperature in the greenhouse.
The frequency and frequency of watering depends on these factors. The water temperature for irrigation should be about 16 degrees. During the development and growth of the bush, it is necessary to monitor and promptly remove old and dried leaves. It is important not to forget to trim the flowers.
First, leave 5 flowers, and then 6. Pollination must be carried out at least three times in 7 days. To do this, open several vents in the greenhouse so that bees and bumblebees fly in.
Pollination can be done manually. In hot sunny weather, you need to lightly shake the brush with flowers, and then open the window in the greenhouse. For quick ripening of the last fruits, 7-10 days before harvesting, the plant stems must be treated with ethylene. To obtain a good harvest, foliar dressing is carried out. Sprayed with mineral fertilizers every week.
The acidity level of the soil and the concentration of calcium carbonate must be appropriate, otherwise there is a high risk of rot development. According to Dutch technology, about 10 leaves should be present on the first brush of the plant. The pedicel should not be long, the internodes should be in the correct position. The stem should be of medium thickness. All these are signs of proper vegetative development. Harvesting is recommended early in the morning 3-4 times a week.
Video about the technology of growing tomatoes: