Any changes in the color of the cucumber tops should be alarming. This is not just a defect, but a signal of ongoing violations. Leaves may turn yellow due to improper watering. With normal application of the liquid, the soil is moderately moist at a depth of up to 10 centimeters. Watering is recommended at the rate of 10 liters per square meter. The volume of water should be reduced if the weather is damp and increased if it is dry.
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In dry air, it is important to timely normalize watering and make shelter.
So that cucumbers do not experience a deficiency of ultraviolet rays, it is necessary to make beds in the direction of sunlight.
To prevent cucumbers from getting burned by the sun, watering is recommended in the morning, evening, as well as in cloudy weather at the root.
It is important that the leaves do not come into contact with the glass of the greenhouse. It should be about 25 centimeters to the walls.
In case of deficiency of mineral components, it is necessary to use a mineral fertilizer, for example "Agricola". Also will be effective:
- calcium nitrate,
- wood ash,
- urea,
- superphosphate.
It is also recommended to do routine feeding and fertilize the soil periodically.
For fungal diseases, you need to spray the cucumbers with milk whey. If the situation has worsened, the drugs Tiovit Jet, Quadris, Topas, 1% Bordeaux liquid are suitable. Leaves affected by the disease must be cut off and burned.
For downy mildew, a solution of copper sulfate is used. The product in the amount of 10 g must be diluted in 10 liters of water. Bordeaux liquid is suitable instead of vitriol.
When spreading downy mildew, you need to use drugs such as "Fitosporin-M", "Quadris" and "Topaz".
Preventive measures against downy mildew consist in treating the seeds with fungicides.
With viruses, pest and insect control can help. They are the carriers of viruses. If a plant is damaged, it must be uprooted and burned.
If the root system is damaged, it is important to loosen the beds with care and plant the seedlings along with a lump of earth.
Means "Aktara" and "Aktellik" help from pests. They are used when attacked by whiteflies, aphids or beetle larvae.
If there is a caterpillar of a winter scoop and a wireworm, use "Zemlyan" or "Bazudin". Moles will disappear if repellents and traps are used regularly. Medvedka will go away if you use the preparations "Thunder" and "Grizzly". Garlic infusion is effective preventively to prevent the appearance of various insects that spoil cucumbers.
For plants to be strong and bear fruit well, you need:
- Ventilate greenhouses.
- Avoid thickening plantings.
- Drizzle with warm water.
- Set up pest traps.
- Carry out routine fungicide treatment.
Observe the health of the cucumbers carefully. It is best to eliminate yellowing of the leaves early.
Do you know how to get rid of yellowing of cucumber leaves?
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