Why cucumbers are not tied in the greenhouse
Many gardeners wonder why cucumbers are not tied in the greenhouse. It is important to correctly and in a timely manner determine what disrupts the process of normal plant development and eliminate the problem.
Rules for planting in a greenhouse
Today, thanks to the work of breeders, there are a large number of cucumber varieties. Cucumbers can be large and small, early or late, lettuce and for pickling, lumpy and smooth-fruited, early and later.
In the open field, you can harvest the finished crop at a later date. Greenhouses are great for getting early vegetables. But for the correct and timely fruit setting, certain rules must be followed. Greenhouse varieties are divided into the following groups:
- winter and spring;
- spring and summer;
- summer and autumn.
Each of these groups, in turn, is divided into early ripening, mid-ripening and late-ripening. They can be bee-pollinated and parthenocarpic. Parthenocarpic plants were created for growing in closed greenhouse conditions, where there is much less light and solar heat. And, of course, there is no access for insects to pollinate.
Reasons for a bad ovary
When cucumbers are not tied in a home greenhouse, an abundance of barren flowers may be a symptom. It seems that the culture is quite healthy, does not lag behind in development, blooms and does not get sick. But the long-awaited fruits do not appear. There are several factors affecting fruiting:
- selection of varieties and subgroups;
- pollination;
- greenhouse temperature;
- lighting;
- watering mode;
- top dressing;
- seedling quality.
You should understand in detail all the intricacies even before planting seeds in a greenhouse or for seedlings.
Influence of the variety
The early varieties are characterized by excellent taste. This is usually the salad type. But a big harvest is rare for them. They are more likely to get sick. Depending on the dimensions of the room, one or another variety should be considered. Some need large sizes due to constant growth. Other varieties require more heating than usual. There are varieties that are pollinated only by an artificial method.
It is better to choose from those varieties or Dutch hybrids that are bred specifically for a specific region and climatic conditions. The best variety can lose in the final harvest because it has different requirements for soil, climate, pests and diseases.
For cultivation, it is better to use fertile soil saturated with humus. Can be replaced with special store-bought soil mixtures.
Pollination his ways
The most common cause of a bad ovary is poor or no pollination of the flower. In a closed greenhouse space, this may not happen.
- You need to open the side doors of the greenhouse and attract insects inside. This can be done on warm, sunny days. When the weather conditions do not threaten the plants.
- You can attract the necessary insects by planting hawthorn, oregano, thyme, valerian, etc. next to the beds. If it is not possible to plant such plants near vegetables, you can plant them in separate pots and just put them next to the beds during the cucumber flowering period. Honey plants will draw the attention of bees and bumblebees with their aroma. Pollination will take place and the fruits will be tied.
- There is an option to buy a family of bees. One or more, depending on the size of the greenhouse. Such families are sold directly in special boxes already with food. These boxes just need to be opened and placed in the greenhouse. Periodically adding only water for the bees. The family adapts after a while in this place, begins to fly out and pollinate the plants.
- There is a method for manual pollination. You just need to take a soft brush and touch each flower in the center. Thus, there will be a transfer of pollen from one flower to another, i.e. artificial pollination.
Influence of temperature conditions
The temperature regime plays an important role in this matter. A sharp fluctuation in air temperature has a detrimental effect
- If the planting of the cucumber crop was early or there was a sharp cold snap outside, you should use artificial heating. You especially need to pay attention to the temperature regime at night.
- To reduce the risk of freezing of plants, it is better to plant immediately on warm beds - sawdust, covered with soil, is pre-poured under the plants. From the decomposition reaction, natural heat is released and warms the earth.
- A little garden trick: a cucumber night warmer will help you get an excellent harvest even in the wettest summer.
- If the beds are ordinary, they should be covered at night with film or mulch. The mulch can even be left on for the entire growing season.
- During the day, be sure to ventilate the room, creating air movement. This procedure will help to avoid overheating, create comfortable conditions for sprouts, and help the aroma of fragrant herbs attract insects into the greenhouse.
It must be remembered that cucumbers cannot stand overheating. The temperature should be no higher than 29 - 30 ° C. Especially during the flowering period. Under other conditions, the pollen will become sterile and the ovary will not be able to form.
Influence of the regime of watering and lighting
Watering and lighting are many important factors for a good harvest. For good growth, high humidity is needed. About 70-90%.
- The soil should not dry out. Good watering is essential. But puddles and complete soaking of the soil should not be allowed, i.e. slush. Soil moisture should be in the range of 50-60%. A good way of watering is sprinkling. You can use drip irrigation, using tubes with holes at a certain distance from each other. If the room is small, you can use bottles without plugs stuck in the ground between plantings for uniform watering.
- You need to pay attention to the temperature of the water for irrigation. If watering is carried out with cold water, this will add additional stress to the plants. May lead to a reduction in the development of female flowers or their complete absence. Male flowers do not bear fruit.
- It is better to warm up the water. Watering can be carried out in the evening. Pre-fill water in the container for irrigation, and it will be heated in a natural way during daylight hours in the room.
The irrigation regime during the growing season can be as follows:
- before flowering;
- during the period of fruit development;
- as the soil dries up;
- during the formation of the ovary.
Lack of lighting has a detrimental effect on the formation of ovaries. Before planting, you need to carefully consider the location of the lighting lamps. They will be needed when there is a lack of sunlight. Buildings close to the greenhouse or tall trees can also get in the way by creating shade.
Influence of feeding
Good and competent feeding of cucumber crops has a great influence on the quality and quantity of the final harvest and can solve the problem of the absence of ovaries forever.
Mineral fertilizers should be applied to the soil regularly and preferably in small doses. It is quite possible to combine this with watering.
Additionally, plants should be sprayed with fruit-forming stimulants. For this, you can use good preparations Bud, Ovary. It is better to use it once a week from the moment the cucumbers begin to bloom.
Influence of seedling quality
If planting is done in seedlings, you should pay attention to the quality of the seedlings. The weakness of the plants can be the reason for the lack of ovaries. Cucumber culture forms both male and female flowers
If there are a lot of barren flowers, sowing was carried out with fresh seeds. It is optimal to use seeds that have been stored for 2 to 4 years. The seeds may not have warmed up before planting. Thus, the agrotechnical rules for growing seedlings were violated.
Why cucumbers don't grow
Sometimes, even with normal care, vegetables will not grow. Cucumber is a heat-loving vegetable, it can be cold in the beds in a temperate or unstable climate.
Plants can be observed to wither, stop growing, or rot. This can happen after the cucumbers are set on the stem. This is observed even in self-fertile hybrids. It is the decrease in the night temperature that prevents the growth of the ovary. Downy mildew also appears in rainy weather. This disease is also called pernosporosis.
To prevent this from happening, the land under the plantings should be free of excess moisture, well ventilated. Immediately remove and destroy leaves affected by the disease. You cannot put them in the compost. To prevent disease, while the plants are small and the ovaries are not large, you need to spray them.
Conclusion
There are many rules to follow for a good harvest. If cucumbers are not tied in the greenhouse, everything should be analyzed and conclusions should be drawn. Adjustments in cultivation and care will allow you to rejoice at the results.