In order to know how to properly pinch cucumbers in a greenhouse, it is necessary to understand why this is necessary. After all, the more a plant grows, the more it will be possible to give a good harvest of fruits. However, in conditions of short growing season and limited space of the greenhouse, nibbling cucumbers are measures to optimize the process of harvesting.
Cucumber vines and features of their formation
Cucumber bush is, of course, not a bush in the botanical understanding of this term. Just in agriculture, so called a separate instance of a plant called a cucumber. In fact, it is an annual grassy vine, which, like all plants, consists of a root, a stem, leaves, flowers and fruits.
Creepers are plants with a special strategy for capturing space and keeping space under the sun. The main thing for them is to find a foothold and climb up there, where no one closes the sun. To do this, each vine produces its own devices, the essence of which is to cling, hold and pull up. Cucumbers are among the types of vines that use special transformed shoots called whiskers.
Despite the seeming fragility, the whiskers have great strength and are able to cling tightly to the support, pulling the whole shoot to it.
The better the conditions, the greater the cucumber bush shoots. All of them are divided into the main lash and side. The task of cucumber growers is to take timely measures to form a bush. The purpose of these actions is to force the cucumber bush to bring maximum yield with a minimum of occupied area. This is achieved through the formation of a vertical support, tying, trimming and pinching.
The meaning of pinching actions
Pinching cucumbers - it means to care for them for optimal formation of the bush. For this you need to solve the following problems:
- Reduce the number of male colors. Fully eliminate them can not, because they are a source of pollen, without which there will be no ovary of the fruit. Most of the cultivated varieties are currently cross-pollinated, so about a fifth of the flowers supplying pollen should be provided in the greenhouse. To do this, it is advisable to decide in advance on where and how many masculine colors you leave; all the rest should be deleted. It must be remembered that on the main shoot, as a rule, male flowers are formed. Expect the formation of fruit should be on the side shoots, because this is where the female flowers appear. For this reason, it is necessary to stimulate the most abundant branching. To distinguish male from female flowers is very simple. First, the females have only the pistil, and the males only have the stamens. Secondly, male flowers are located on shorter and thinner legs. Thirdly, pistillate flowers have a noticeable cucumber ovary. And, finally, male flowers are placed in groups of 5-7, and female flowers - one by one, or 2-3 copies each.
- Eliminate all that is not aimed at getting the fruits. As a rule, the antennae are considered to be a secondary body that takes over resources. In a greenhouse, such a position is justified. If you save every centimeter of limited space, you should not let the process of weaving shoots go to gravity. It is very difficult to keep track of how the antennae cling and where they direct the whip. It is better to simply tie the vines to the trellis, taking on the role of antennae.
- Optimize the arrangement of leaves, flowers and shoots. The feasibility of pinching in this case is dictated by the need to respect the optimal level of illumination of all the leaves of the vine, the correct branching of the shoots for this variety, as well as the optimal arrangement of colors.
In order to achieve the desired result, you need to know how to properly pinch cucumbers using certain patterns.
The sequence and features of pinching greenhouse cucumbers
The answer to the question: how to pinch cucumbers depends on what varieties you grow. The fact is that the pattern of impact on the bush with the help of pinching may be different for varieties with different types of pollination. Parthenocarpic cucumbers do not need pollination, so you can not care about leaving the male flowers. For insect-infected varieties, it is important to maintain the minimum allowable proportions of male and female flowers.
Caring for cucumbers with the help of an excess system must be carried out in the following sequence:
- The first procedure is carried out immediately after the appearance of the fifth sheet. Flowers, whiskers, and side shoots are removed in the lower sinuses. It is necessary to remove any flowers, since the early fruits, formed by the still not strong whip, are small and often irregular in shape.
- Further care involves pinching after the appearance of the seventh or eighth leaflets. It is necessary to remove two side shoots on each side of the main stem.
- When the eleventh leaf appears, it is necessary to pinch off the top of the main shoot. This is done to ensure that the plant does not develop too large a scourge, but is spending all its resources on the formation of fruits.
- Partenocarpic varieties are grown in one stem. This means that you need to pinch so as to reduce branching. When the main shoot reaches a height of about half a meter, in its lower part it is necessary to remove all the shoots, leaves and flowers. Above this zone, all lateral processes must be pinned to the level of the first leaf, while leaving the ovary and several leaves.
When conducting operations on the formation of cucumber bushes, it should be remembered that any pinching is a trauma for the plant, therefore pruning should be carried out only with a sharp and clean tool. The knife or scissors that should be protected from contact with the soil and other environments where cucumber pathogens may be located are best suited.