The choice of sowing method directly depends on the size of the seed itself. The larger the seed, the deeper it can be planted in the ground, it has enough strength to overcome the resistance of the topsoil. If the seeds are large, the spears can easily penetrate the topsoil.
Sowing the seeds without embedding them in the soil…
The biggest difficulty is when sowing small seeds. If you sow small seeds shallowly with a little topsoil, it is likely that the topsoil will dry out before the seeds break through and the seeds that gave the seedlings will die.
If small seeds are sown deeper, access to heat and fresh air is impeded, which also has a direct impact on the germination of small seeds.
Seeds in flowers such as petunia, lobelia, primrose, ciperus, fragrant tobacco, gloxinia, begonia need to be sown without putting the seeds in the soil. Usually, in order to get already flowering plants at the end of May the seeds of these flowers should be sown in late February – early March in the seed boxes.
The soil for sowing small seeds needs to be very light and nutrient-rich. The layer of soil should be lightly compacted. If you sow small seeds in early spring, it is very convenient to use them on snow at this time. A small layer of snow is poured onto the soil layer and the seeds can be evenly spread over it. The snow gradually melts and the moisture, absorbed from the soil, draws in the seeds. During the germination of the seeds of this layer of snow is enough to do without watering. In order to preserve the moisture, the seed boxes are covered with glass or p/e film. Condensation on the back of the film or glass must be removed in good time, otherwise coarse droplets will pull the seeds very deep away from where they will no longer germinate. That is why it is better not to water during germination of small seeds, you can only spray lightly from the sprayer.
If you sow fine seeds in summer or autumn, when there is no snow, you can powder the soil with chalk for even sowing.
Immerse the seeds in the ground
If the seeds are medium or even coarse, the placement depth of the seeds is determined by the conditions under which they are sown. If the seeds are sown in a seed box, greenhouse or greenhouse, then you can use a method such as immersing the seeds in the ground. This method of sowing seeds is good under conditions where heat and water are available at all times.
With this method of sowing seeds, it is better to sift the earth mixture (the composition of the mixture depends on the plant) through a large sieve, removing large particles of soil and breaking up lumps. On a layer of loose soil, place the seeds, lightly press into the ground so that the edge of the seed can be seen. Instead of pressing them in, they can be poured over the top with perennial sieves using the same sieve. If you plant the seeds of plants which are easily affected by the black foot, it is better to use river sand instead of prying. Seeds are abundantly watered through a small sieve from the watering hole, if you are sowing in seed boxes, you can use a sprayer.
Sowing the seeds in the open ground
When sowing seeds in the open ground, you have to take into account not only the size of the seeds, but also the physical properties of the soil, its moisture, the period of seed germination, the depth of placement and even the season.
The depth of seed placement in the open ground directly depends on the physical properties of the ground. If the soil is light, small seeds can be planted at a depth of half a centimetre, medium seeds at 1.5 cm and coarse seeds in light soil can be deepened to 3 cm. If the soil is heavy (loam) or damp (lowland), the seeds should be sown in a shallower way.
When sowing in open soil, apply the roller to obtain a friendly germination. If the seedbed has been dug up and dismantled, it can be rolled in with round logs, a bottle of water or gently slammed on top of the plate. After that, sprinkle the seeds on a flat surface, sprinkle the top with sand or willow and roll on again. After this procedure, the seeds come into closer contact with the ground, germinate and immediately take root.
Covering the seedlings with polyethylene film or non-woven material from above will help to speed up the seedlings.
If you sow in spring, seed embedding is done at a lower depth than in summer. In summer, the soil gets very warm and the water from the top layer evaporates quickly, so the seed embedding depth in summer is also deeper.
Seeds can be sown wet and germinated or dry, everything depends on the weather.
Seed germination in the open field is highly dependent on the weather. If the spring is warm, sowing with soaked and germinated seeds gives more friendly and early germination and starts blooming a few days earlier than sowing with dry seeds. But if the spring weather is cold and rainy, the germinated seeds can simply rot in the soil.
The seeds of some perennials and most annual plants and some vegetable crops can be sown in late autumn, so that they do not germinate in autumn. Such sowing is considered a sub-winter sowing. Very often, the seeds of plants themselves fall to the ground and in spring they themselves germinate even in shrubs and fruit trees, having passed the meal.