When cucumbers grow badly in a greenhouse, what to do, you need to decide quickly. The choice of one or another way to fix the problem depends on the cause of this phenomenon. Cucumbers are a capricious crop, therefore some agrotechnical errors lead to a minimum and poor-quality harvest. This fact saddens the owners of summer cottages. Some may refuse further cultivation of cucumbers in the greenhouse, more stubborn gardeners will find the cause and try to eliminate it.
Causes of poor growth of cucumbers
There are several factors negatively affecting the future harvest. The main reasons for the decline in yield of cucumber plants:
- lack of nutrients in the soil;
- fungal infection;
- wrong selection of seed material;
- injury to plant roots during transplanting seedlings;
- thickening landings;
- inconsistency of temperature and light conditions;
- violation of watering;
- a large number of ovaries and shoots on the bushes;
- excess nitrogen compounds in the soil;
- pest damage.
Soil fertility is constantly decreasing over time, therefore it is necessary to regularly add special additives to the earth. It is advisable to change the soil in the greenhouse every 2-3 years. To do this, remove the top layer (about 25 cm), and instead fill up fresh ground mixed with humus, peat and sand.
It is important to periodically feed the plants, especially when planting in infertile or infertile soil. You can make the first supplement when sowing seeds or planting seedlings. To do this, in the prepared wells interfere with a little humus.
As soon as the seedlings take root, it is recommended to shed them with a solution of liquid mullein, taken at the rate of 1 l per bucket of water.
To increase fertility, it is necessary to apply complex mineral fertilizers.
Infection with fungal diseases is another reason for poor growth of the bushes. First, the fungus infects the soil, and then the plants themselves. As a result of infection, death of the entire culture is possible.
To prevent infection, it is necessary to pre-disinfect the soil substrate. To do this, it is shed with a saturated solution of potassium permanganate, it is better to do this before planting cucumbers.
When growing cucumbers in a greenhouse, it is important to understand that insect pollination in a closed room is difficult. Therefore, usually take self-pollinating varieties, on a bag with this type of cucumber is marked F1. Such seed material is of higher quality, but it must be pre-sorted, removing the infertile seed. The germination test is carried out in a 5% saline solution; seeds are taken for planting that have settled to the bottom. Before sowing, they will have to soak in the appropriate compositions and make treatment with growth stimulants.
How to identify and eliminate the causes
To prevent damage to the roots, it is better to sow the seeds at once on the prepared bed. It is convenient to grow seedlings in organic tanks, which are then planted with the plant. You can also use individual dishes, from which sprouts will be taken out together with a clod of earth.
When thickened plantings in plants there is a competition for nutrients, water and light. Chances of oppression weaker plants. Poor airing and lack of light also lead to crop loss. To avoid this, it is necessary to observe the distance between the bushes in a row of not less than 20 cm, and between rows - from 60 cm.
When growing cucumbers in the greenhouse, it is important to control the temperature. The best indicators are at + 25 ° C during the day, at night - not below + 15 ° C. Temperatures below + 15 ° C adversely affect the formation of ovaries and plant growth. Those who wonder why cucumbers grow crocheted in a greenhouse, you need to pay attention to this fact. Excess of norm in + 30 ° C interferes with normal fertilization, the crop becomes less.
In hot weather in the afternoon it is necessary to shade sprouts from the scorching rays.
On cold nights you will need to create additional heating of the plants. To this end, used plastic containers, buckets and barrels filled with hot water. You can pour warm water on the ground in the evening.
Cucumbers - light-loving culture, so you need to provide them with optimal illumination. If the light is not enough, it is necessary to use artificial lighting. It is important to water the plants abundantly with an interval of 2-3 days with a warm liquid, and the water temperature should be about the same as the temperature of the soil. At the same time, excessive moisture should be avoided, as this can lead to the formation of rot on the roots, diseases and subsequent death of the plants. Particularly in need of water are varieties with wide leaves that evaporate a large amount of moisture. The lack of water adversely affects the taste characteristics of the fetus.
If a large number of ovaries and shoots are formed on the bush, you need to take care of timely molding. Cutting off excess shoots is not necessary for varieties growing in one stem, and hybrids with limited growth of lateral shoots.
Excess nitrogen compounds and pest damage
With an excess of nitrogen, all the forces of the plant go to the formation of green mass. The leaves become large and bright green, but at the same time a lot of barren flowers form on the plant. An excess of nitrogen leads to a lack of phosphorus and potassium, responsible for the quantity and quality of the crop.
If symptoms of excess are found, the plant should be supplemented with a potassium-phosphorus additive, ashes. To prevent overdose, you need to monitor the amount of applied nitrogen fertilizers.
To control pests, insecticides or folk methods are commonly used - a soap solution, an infusion of garlic arrows or onion peels. In order not to wonder why cucumbers grow badly in a greenhouse, it is necessary to follow all the agrotechnical rules for growing this crop. In case of transplanting, it is important not to delay with this process. Monthly sprouts are most often planted in the ground, in this case their adaptation will be the best. It is important not to damage the root system. When growing cucumbers in a greenhouse with seeds, do not forget about the warming up of the soil, otherwise the seed material may rot. It is best to sow in warm weather.
If the fruits of cucumbers grow poorly in the greenhouse, and the plants themselves begin to lag behind in growth, it is important to correctly identify the cause and take appropriate measures. To improve the development and growth of fruits will help and timely harvest. If the ripe fruits are not removed in time, the ovary may die.