The rules for growing tomato seedlings from a specialist company Gavrish
February is in the yard - which means that sowing for seedlings of some crops begins. It's time to discuss the intricacies of sowing and growing healthy seedlings. Today we’ll talk about tomatoes. You can speed up the harvest when growing seedlings in greenhouses. This process is time consuming and responsible. It is necessary to properly prepare the soil for seedlings, to monitor the temperature, lighting, humidity. It is very important to know the initial place of growth of this culture, its biological characteristics. This will avoid mistakes and get healthy and strong seedlings.
In the middle lane, ripe tomato fruits can be obtained only through the seedling method of cultivation, since the period from seedlings to the end of fruit ripening is 85-120 days.
The seeds of indeterminate (tall) varieties and hybrids are sown from March 20-25, determinant (with limited growth) from March 25 to April 10.
40-50-day-old seedlings are planted in open ground; in the south, 30-day-old seedlings. The optimum temperature of seed germination is 24-26ºС.
When loops appear, it is necessary to remove the covering film and expose the drawers or cassettes to the light. After the opening of the cotyledons, the temperature is reduced to 18-20 ° C during the day and to 16 ° C at night. High illumination and relatively low night temperature lead to the early planting of the first peduncles, which, in turn, helps to reduce the number of leaves to the first inflorescence and increase the number of flowers in inflorescences, and also protects the seedlings from stretching.
After 7-10 days, the temperature of growing seedlings is increased during the day in sunny weather to 20-22 ° C, in cloudy weather to 18-19 ° C, at night the temperature is 17-18 ° C.
When sowing to school / seedlings / optimal dive time - when 1-2 true leaves appear / after 10-14 days. after germination.
The composition of the land for dive: 7 parts - low-lying decomposed peat, 2 parts humus + 1 part - turf land or 5 parts sawdust + 3 parts peat + 2 parts of land.
Watering and feeding seedlings is carried out by micro sprinkling or saturate the cassette from below from 8 to 10 or from 15 to 17 hours. An important point - plants should not go wet at night.
During the period of growing seedlings, preventive methods for protecting plants from pests and diseases are necessary.
|plant development phase||a drug||dose||what affects|
|2 sheets||Previkur 60.7% v.||12-13ml per 10l. water||against root rot, root growth stimulator|
|5 leaves||Confidor 20% r.c.||15 ml per 10 liters. water||against all suckers / aphids, thrips /|
|In 3-5days before planting||Ridomil Gold 68% sp|
20-25g per 10l.water
|against fungal diseases|
With the development of 2 leaves in plants, the seedlings are shed with Previkur 60.7% solution of water, adding it to the nutrient solution. This fungicide against root rot is also a stimulator of root growth. The better the root system is developed, the more it is able to “pump” nutrients, the more powerful your plant will be. All of these activities will be preventative. And we will work with systemic drugs to protect the plant for 1.5-2 months.
Before planting in open ground, seedlings are tempered, exposing it to the street for 3-5 days. In very strong sunshine, plants can sprinkle spunbond / agrotex 17mcr / for several hours to minimize stress.
When planting seedlings in open ground, it must be remembered that the root system of tomatoes at a soil temperature below 14 ° C practically does not work. At low temperatures, the growth and uptake of phosphate by the roots slows down significantly. The lower surface of the leaf turns lilac red. This can be eliminated by heating the soil.
Plants need minerals to grow, bloom, bear fruit. The main nutrients include nitrogen, phosphorus, potassium, calcium / N, P, K, Ca /.
Nitrogen contributes to the development of leaf mass. Phosphoric acid strongly affects the setting of fruits of tomato, cucumber, pepper. Potassium is involved in the development of the whole plant. Its disadvantage causes uneven coloring of tomato fruits. The stalk appears green, the fruits are small, often with cracks. Calcium is involved in the formation of tissues and improves the physical properties of the soil by binding excess acid in it. The greatest efficiency is achieved only with their balanced ratio.
In addition to the basic nutrients, microelements are required for the growth and development of plants in minimal quantities. They must be in the soil.
Boric micronutrient fertilizers are used on well-calcined soils, molybdenum - on acidic, copper - on peat bogs.
The appearance of vegetable plants can determine the lack of nutrients. N - leaves are pale green, then yellow, small plants. P - leaves are dark green with reddish pigmentation, depart from the stem at an acute angle, the plants are stunted. K - yellow border on the edge of the leaf and lightening between the veins, the leaf is curled. Mg - chlorosis of old leaves. They become almost white, but do not die. Ca - growth points die, chlorosis of young leaves. The roots are short, thicken, mucilage. MN is chlorosis of the leaves, but the veins remain green.
Have a good harvest!
Tatyana Devyaterikova - agronomist, candidate of agricultural sciences, Gavrish company.