Many amateur gardeners are interested in how to prolong the fruiting of cucumbers in the greenhouse and get a good harvest in early autumn. Cucumbers belong to crops with a rather short period of fruiting - their wines start to wilt in August, and by the end, and sometimes in the middle of this summer month, the laying of new fruits stops. But with the right approach to the cultivation of cucumber bushes and the use of special agrotechnical techniques, you can extend the harvest until September - October.
The main causes of lash drying, leading to a significant reduction in crop yields, are damage to the bushes with diseases traditional for cucumbers, insufficient nutrients in the soil, damage to the stems, and lower air temperature. Elimination of these factors will allow cucumber bushes to successfully fruit in the fall.
Fight against cucumber diseases
The most common diseases of cucumber bushes are powdery and downy mildew (foam), bacteriosis. The defeat of plants with powdery mildew usually occurs when the air temperature drops below 18 ° C and the high humidity characteristic of rainy weather. The disease manifests itself in the form of white bloom, initially covering the leaves in small spots, then completely, causing yellowing and drying.
The likelihood of defeat bush with powdery mildew increases with too intensive feeding with nitrogen fertilizers, irregular and not enough abundant watering.
Treatment plants should begin at the earliest stage of the disease. When spraying with solutions, it is necessary to ensure that liquid gets on both sides of the sheet in order to achieve complete destruction of the pathogen.
The following measures give an effective result:
- spraying of the vegetative parts of the bush with a decoction of horsetail, infusion of marigolds with the addition of soap, diluted with water, mullein;
- treatment with chemotherapy drugs - 0.5% p-ohm soda ash and soap, 4% p-ohm copper sulphate, 1% p-ohm Bordeaux mixture;
- periodic (once a week) spraying with a solution of colloidal sulfur;
- termination of plant nutrition with nitrogen fertilizers;
- disinfection of the greenhouse with formalin solution after harvesting;
- maintaining the air temperature inside the greenhouse at 23-25 ° C; use for irrigation of warm water.
When affected by mildew, cucumber leaves are covered with light yellow spots, then after a while they turn brown and dry. The cause of the disease is infection with a fungus, the causative agent of foam-porous, which is promoted quickly by high humidity, used for irrigation of cold water.
Eliminating the disease will help to stop watering and make additional feedings when the initial signs of foam-foam appear, and Ridomil treatment, copper chlorine oxide, Ordan. Solutions of these drugs should be warm. It is necessary to maintain the optimum temperature in the greenhouse (approximately 25 ° C). It is useful to spray the bushes with diluted whey.Tip! As a preventive measure, one should avoid thickening crops, adhere to the rules of crop rotation, regularly changing the place of planting of cucumbers, use warm water when irrigating plantings.
These measures will also help to prevent bacteriosis - angular leaf spot.
A characteristic manifestation of the bacterial disease of this species is the appearance of watery spots on the vegetative parts of the plant, gradually turning into depressions, at the bottom of which fluid accumulates.
To prevent the development of bacteriosis will allow:
- regulation of humidity and temperature conditions in the greenhouse;
- balanced application of fertilizing with complex mineral fertilizers;
- Treating bushes with fungicides, for example, Previkur, Metaxil or Etafol;
- careful selection of seed material - from healthy bushes, with soaking in 5% salt solution;
- complete removal of plant residues after harvest, followed by burning or deep embedding into the soil;
- disinfection of soil and greenhouse surfaces.
Stimulation of fruiting cucumbers
To prolong the fruiting period, you can increase the amount of nutrients contained in the soil. To this end, urea is applied to large areas of cucumber at the rate of 300 g per 1 hundred square meters, dissolving the fertilizer in irrigation water.
In a small area, you can additionally spray the bushes with an aqueous solution of urea, dissolving 15-20 g of the drug in 10 liters of warm water. Instead of mineral fertilizers for root feeding, you can use a mullein diluted with water, adding 30 g of superphosphate for every 10 liters of solution.
Cucumbers also begin to bear fruit more actively with regular filling of loose materials, which usually use peat, dried cut grass, humus or compost.
Covered with mulch, the bases of the stems allow additional lobe roots. This ensures that an increased amount of nutrition is supplied to the stems and leaves, causing new vegetative mass to grow and the plant to rejuvenate.
When growing cucumbers on clay soils, the absorption of nutrient solutions for root hairs is more difficult, therefore in such conditions it is recommended to add mulch materials more often. It is also possible to rejuvenate the bush by placing the part of the stem devoid of leaves at the base of the bush with rings and sprinkling it with fertile soil. Soon, she will plant young roots that can provide the plant with the necessary nutrition for good fruiting.
Cucumber Care Tips
Increase the time of fruiting cucumbers will allow compliance with the following rules for the care of plants:
- When harvesting, one should carefully separate the fruits from the lashes without disturbing their position or tearing them from the ground, so as not to damage the lobe roots extending from the stem.
- Cucumbers will be better fruitful if the harvest is produced regularly. The best time for this operation is noon - during this period the concentration of moisture in the plant decreases, the elasticity of the stems increases and the fruits are more noticeable.
- When the air temperature drops at the end of summer, the number of root dressings should be reduced by 2-3 times, compensating them with foliar (spraying the stems and leaves), since even with a slight decrease in temperature, nutrient absorption by the roots decreases significantly.
- To stimulate the growth of young shoots and the formation of new ovaries, it is recommended to remove the leaves in the lower part of the stem that are outside the fruiting area.
- Cucumbers are preferably planted in several batches. With a lack of space, seedlings can be planted to the previously planted bushes. The seedlings grown from stepchildren will enter the fruiting stage much earlier than obtained by germination.
Conclusion on the topic
These recommendations will help to increase the lifespan of cucumber bushes and the amount of the resulting crop. It is necessary to monitor the air temperature in the greenhouse, with its significant reduction by heating the greenhouse with a stove or other type of heater. In later periods, it is better to plant self-pollinated cucumber varieties (parthenocarpic), the yield of which is significantly higher compared with pollinated insects.