Cucumbers grow almost all gardeners in our country. Unfavorable weather conditions combined with a short and rainy summer make cultivating this heat-loving plant on ridges in open ground a very risky task. In experienced gardeners, the planting of this vegetable crop in open ground is always duplicated by cultivation in greenhouse-type buildings.
Most often, a light greenhouse for cucumbers made of translucent polycarbonate is built with their own hands. This design does not take up much space and gives a very good result. Photos of such protected buildings can be seen on the websites of numerous manufacturers.
Cucumbers grow without problems and perfectly bear fruit in a polycarbonate greenhouse, but in order to plant this vegetable crop to the maximum yield, plants should be grown and taken care of in accordance with a certain technology.
Features and Rules
When cultivating cucumbers in a greenhouse or a polycarbonate greenhouse, special attention should be paid not only to the proper care of the plants, but also to the observance of microclimatic conditions favorable for development. If planting and caring for cucumbers in open and protected ground does not have fundamental differences, the choice of variety, as well as the influence of temperature and humidity on cucumbers and seedlings for a polycarbonate greenhouse are of no small importance.
Photos of the best greenhouse varieties are available in abundance on the forums of experienced gardeners. However, many beginning summer residents, choosing cucumbers for a greenhouse or a greenhouse made of polycarbonate, quite often make mistakes that adversely affect the further growth of plants and make it difficult to care for them. When choosing a variety of such a vegetable crop from the photo, very often a number of factors that allow us to grow healthy and strong plants, as well as get a full and high-quality crop, are not taken into account.
Development problems and their elimination
Even the most modern variety and excellent care do not guarantee yields with the wrong choice of seed material, as well as non-compliance with growing technology. Most often, growing cucumbers in greenhouses is accompanied by the following problems.
- An insufficient number of fruits and ovaries can be eliminated by adding fertilizing to the greenhouse soil based on high-quality bird droppings. In addition, a positive effect is observed during regular ventilation in the evening.
- The decrease in the yield at the stage of mass fruiting can be corrected by feeding plants with mullein or urea.
- Blanching of the leaves of plants is accompanied by insufficient care in terms of fertilizing with nitrogenous fertilizers. Nitrogen starvation can be quickly corrected by introducing a urea solution at the rate of fifty grams of the drug in a bucket of warm irrigation water.
- The abundant growth of the green mass of the plant cultivated in the greenhouse against the background of reduced flowering is typical with an incorrect fertilizer ratio. Particular emphasis needs to be placed on introducing potash-phosphorus top dressings into the plan.
- Most often, root rot accompanying the cultivation of greenhouse cucumbers is easily eliminated by pollination of a slightly exposed root system of plants with a mixture based on ash and lime-fluff at a rate of 3 to 1. Immediately after treatment, fertile soil should be added to the plants.
How to extend the fruiting of cucumbers
It is quite simple to grow a rich harvest of cucumbers in a greenhouse or polycarbonate greenhouse with your own hands. Proper care in combination with the systematic top dressing of greenhouse plants give an excellent result.
Growing strong, healthy and abundant fruiting plants is impossible without the proper performance of top dressing. The systematic application of fertilizers allows you to get the maximum yield and makes plants less vulnerable to damage by pests or pathogens. The standard scheme for feeding greenhouse cucumbers is as follows:
- at the stage of active development of cucumber shoots and leaves, the need for feeding plants with nitrogen fertilizers that are bred according to the attached instructions increases;
- during flowering and ovary formation, greenhouse cucumbers lack fertilizers with a high amount of phosphorus;
- in the process of mass fruiting, cucumbers in sheltered ground need fertilizing with potash and nitrogen fertilizers.
The first feeding of greenhouse cucumbers should be carried out at the time of the formation of the fourth real leaf. For this purpose, 20 g of superphosphates, 10 g of potassium chloride and 10 g of ammonium nitrate are required to be diluted in a bucket of warm water. The resulting fertilizer volume is enough to feed fifteen greenhouse plants.
The next stage of feeding cucumbers should be performed after three weeks. The signal for fertilizer application is the mass flowering of greenhouse plants. Plants at this time need organics and respond well to the introduction of bird droppings or mullein.
It should be remembered that self-made top dressing is somewhat inferior in effectiveness to complex or monofertilizers of factory production.
Caring for parthenocarpic varieties
The cultivation of parthenocarpic varieties and hybrids of greenhouse cucumbers is an ideal option for gardeners and summer residents who expect from this vegetable crop a high level of yield and quality of ripened fruits, combined with minimization of labor costs and unpretentiousness in care. Growing such cucumbers with your own hands is quite simple and unproblematic.
Partenocarpic hybrid cucumbers capable of fruiting without pollination, which makes this type of plant an ideal option for cultivation in greenhouse constructions, where the process of formation of greenhouses will not completely depend on the presence of pollinating insects. Most modern parthenocarpic hybrids adapted to low air humidity, as well as errors in non-compliance with microclimatic conditions.
Particular attention should be paid to the formation of a bush of a greenhouse cucumber, which can be done in several ways. Compared to bee pollinated varieties, parthenocarpic modern hybrids of cucumbers do not form a hollow, and for this reason, the traditional pinching of the main stem is unacceptable. The main stem of the greenhouse partenocarpic cucumber can be pinched only if it is lengthened by more than the height of the trellis.
As a rule, the stem length in this case significantly exceeds two meters. The rest of the plant care is standard and consists of regular watering, weeding, top dressing according to the planned scheme and preventive measures to protect plants from diseases and pests.
You can find out about the rules for growing cucumbers in greenhouse conditions here.
Care for pollinated varieties
Very many gardeners in our country prefer bee-pollinated greenhouse varieties of cucumbers. Such steady attention and popularity are not accidental, and are due to the fact that bee pollinated varieties have a more appetizing appearance and have an excellent aroma. In addition, modern breeding achievements make it possible to select varieties and hybrids of this vegetable crop that are sufficiently resistant to adverse external influences.
To obtain stably high yield indicators when growing bee pollinated greenhouse plants in polycarbonate structures, certain cultivation rules should be followed.
- Twine tying on trellises is carried out five days after planting plants in greenhouse soil. At least once a week, twine the string with a cucumber lash. Neglect of this rule has a very negative effect on the growth and development of this vegetable crop, reducing fruit production.
- If compactors on greenhouse ridges are not planted, then preventive spraying of plants against the main cucumber pests and diseases should be performed. It is advisable to plant a garden salad as a compacting culture, which minimizes the need for pesticides.
- It should be remembered that the fruit production of this type of greenhouse cucumbers directly depends on the presence of pollinating insects in the construction of the protected ground, which implies planting honey plants and observing the ventilation mode.
- In addition, such cucumbers are particularly sensitive to violations of the water regime, and a lack or excess of moisture in the greenhouse soil disrupts the development of this vegetable crop and provokes the falling of ovaries, deformation of the fruit, and a decrease in yield.
You may also be interested in an article in which we talk about mistakes and problems when growing cucumbers.
Cucumber care in the greenhouse
Caring for greenhouse cucumbers is somewhat easier than cultivating heat-loving plants on ridges of open ground. You should carefully consider the fertility of the greenhouse soil and compliance with optimal microclimatic parameters. At the moment, preference should be given not only to zoned seed material, but also to pay attention to the resistance of the variety or hybrid to adverse external factors, as well as diseases and pests.