Cucumbers are a demanding culture. To get a good harvest, you must follow some rules. In cases of yellowing and drying of the ovaries, you should pay attention to agricultural technology and the presence of errors during cultivation.
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Lack of sun
The process of photosynthesis is impossible without light, and cucumbers are very demanding on adequate lighting to obtain energy. With a lack of sun, the plant has to "save" its strength, as a result of which it sheds the ovaries. It should be ensured that the crops growing nearby do not shade cucumber bushes.
Irrigation violation
Watering is essential for the development of cucumbers. It is advisable to conduct moderate watering before the beginning of fruiting and intensive watering during the fruiting period. Lack or excess of water leads to an imbalance in soil moisture and, as a result, yellowing and dropping of the ovaries.
Correct watering:
- Carry out with warm, settled water at 23 ° C. On a hot day - in the morning, on a cool day - in the afternoon.
- During the flowering period, it is advisable to dry the soil, this increases the number of female flowers.
- Before flowering, watering is carried out twice a week on 1 m2, 3-4 liters of water. During and after flowering - once every 2-3 days per 1 m2 6-12 liters of water.
Temperature violation
The cucumber does not tolerate sudden changes in temperature. A comfortable daytime temperature for a plant is up to 27 ° С, at night - not lower than 15 ° С. In film greenhouses, it is possible to maintain optimal values.
To raise the temperature in the greenhouse:
- When it gets colder, you can use a heater.
- Additionally cover the greenhouse with foam wrap.
- Cover the cucumber bushes with perforated foil.
- Cover the soil with black spunbond.
- Cover the ground with a film.
To reduce the temperature in the greenhouse:
- Organize a draft.
- Water intensively in the morning.
- Spray the greenhouse with a solution of chalk or flour to reflect excess light. To prepare a solution, dilute 2 kg of chalk in 10 liters of water and add 0.4 liters of milk.
Disruption of mineral nutrition
The cucumber crop is sensitive to the low nutrient content of the soil. The lack of the necessary elements provokes yellowing and discoloration of the ovaries.
Top dressing requirements:
- Before flowering, it is advisable to apply nitrogen under the cucumber bushes - for example, chicken droppings or mullein.
- During flowering, fertilize with wood ash - 300 g per 1 m2. This will saturate the soil with potassium.
Abundant watering flushes nutrients from the soil, so it is recommended to feed the cucumbers once every 10 days.
Defeat by bacteriosis
High humidity of the air and soil provokes the development of bacteriosis - the appearance of spots on the leaves, which dry out and form holes. This contributes to the yellowing of the ovaries. The most effective preventive measures against bacteriosis are:
- Spraying bushes with 1% solution of Bordeaux liquid, 4% suspension of copper oxychloride or preparations "Gamair", "Trichoderma Veride".
- Processing the greenhouse with sulfur sticks in the fall.
Pollination problems
Mass abscission of ovaries is a sign that pollination has not occurred. If the varieties are pollinated by bees, it is necessary to open the greenhouse doors from 6 to 10 in the morning. To attract bees, you can sprinkle with a sweet solution of honey - 1 tsp. l. for 1 glass of water.
Hand pollination of flowers will also help. To do this, you need to pick the male flowers - they have only stamens with pollen - and touch the stigma of the pistil of a female flower, dropping pollen on it.
The problem of falling off cucumber ovaries is solved with the correct determination of the cause. Various methods of eliminating yellowing and dropping of the ovaries allow you to preserve the harvest and get tasty fruits much longer.
Do you know how to deal with dropping and yellowing of cucumber ovaries?
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