Seedlings of cucumbers - diseases of leaves. Why withers, the edges of leaves dry, turns yellow, falls, dies cucumber seedlings: what to do?

Descriptions of diseases of cucumber seedlings and ways of their treatment.

Fragrant cucumbers are a delicious and low-calorie vegetable, which fans of diets adore. Ground cucumbers can be obtained already in the middle of summer, but if you want early to enjoy fresh salad of cucumbers, plant the seedlings.

Why does the cucumber seedling turn yellow?

Yellowing of seedlings is a common problem faced by gardeners. And not necessarily the culture of something is sick.

Causes of yellowing of cucumber seedlings:

• Lack of soil. This usually happens if the culture is grown in a small container. The roots are deficient in the soil, and leaves turn yellow.
• Lack of minerals. This is often the case with poor soil. In general, it is recommended to plant the seedlings in the place where onions and garlic grew. They do not impoverish the soil. Excess nitrogen. This often happens after the application of nitrogenous fertilizers. The leaves turn yellow and become covered with dots.
• Subcooling. Unlike tomatoes, cucumbers love heat, and if the soil cools below 17 ° C, the leaves can turn yellow. Also, growth stops.
• The lack of sunlight .This problem can easily be solved by using fluorescent lights.
• Diseases and parasites. Yellowing of cucumber leaves can occur due to the presence of powdery mildew, spider mites and fusariosis.

yellowing cucumber seedlings

Cucumber seedlings stretched: what to do?

Sometimes seedlings of cucumbers decently stretch, with the leaves becoming shallow. This significantly reduces the yield and prevents the formation of fruit ovaries.

Causes of stretching cucumber seedlings:

• High temperature and lack of light. With high temperature and lack of light, the seedlings become long, the leaves are observed small and stretch towards the side of light. To prevent stretching, lower the temperature to 17 ° C and light the culture with fluorescent lights.
• Dense seeding. Initially, the horticulturist can not know about the germination of seeds, so densely sows the seeds. With excellent germination, the seedlings in the boxes are very numerous and the bushes interfere with each other. It is enough to remove part of the bush.
• Incorrect watering. Watering is carried out with warm water at a temperature of 22-24 ° C.

Cucumber seedlings stretched

Who eats seedlings of cucumbers in a greenhouse, what to process?

Despite the closed ground in the greenhouse, there are a lot of diseases and pests that significantly damage seedlings of cucumbers. Pests fall into the soil together with seeds or directly from the garden, which is located near the greenhouse.

Pests living in a greenhouse :

• Slug. This is a strange creature, like a snail without a shell. It feeds on greens mostly in the dark. It is difficult to see the parasite during the day.
• The Bear. Do not notice this insect on the site is very difficult. Usually it is always visible. Leaves on the seedling huge holes, eating it. For elimination use Thunder or vinegar with black pepper.
• Wireworm. This insect eats only the roots and is the larva of the click beetle. Occurs in the ground in the root area. It has a yellow color. Process with a solution of "Fosbetsida"( 10%).
• Aphids. This is the most famous pest that lives both in greenhouses and in the air. Actively multiplies and eats leaves of seedlings. To combat insects, folk methods are often used. For example, spraying decoction of wormwood or yarrow. For greater efficiency, liquid or household soap( 20 grams per ten liters) is added to the broth.
• Cucumber mosquito. This is a larva similar to a worm. It is brought into the greenhouse together with organic fertilizers. Process "Aktary", "BI-58".

Who eats seedlings of cucumbers in the greenhouse

What if the edges of the leaves dry at the cucumber seedlings?

Leaves most often dry in seedlings for the following reasons:

• Weak or excessive watering
• Lack of fertilizers. Remove the top layer of soil and put peat soil and turf
• Lack of light. Include fluorescent lights
• Parasites and insects. Before planting, treat the seeds with potassium permanganate

. What if the edges of the leaves dry at the cucumber seedlings?

Why the seedling of cucumbers falls, withers and dies: what to do?

Most seedlings wither and fall due to decay of the root system. This can be due to a number of reasons:

• Excessive and frequent watering. Contribute to stagnant water in the root area. Cut irrigation, conduct them less often, but in large portions.
• Frequent fertilizing with manure and organic fertilizers. This promotes rotting of the roots. Stop for a while fertilizing with organic fertilizers.
• Differences in daytime and nighttime temperatures. If the seedling grows in the greenhouse, then install a temperature sensor, which triggers heating when it triggers.

Why the seedling of cucumbers falls, withers and dies: what to do?

White spots appear on cucumber seedlings: what to do?

There are many reasons why white spots appear on the leaves. And to find out why the gardener will have to try.

Causes of the appearance of white spots on cucumber seedlings:

• Powdery mildew. This disease affects most plants in the greenhouse and in the garden. It is a fungal disease that occurs when the temperature in the greenhouse drops to 15 ° C and the soil is too moist. Fight with the disease can be with the help of "Quadrice", "Topaz", "Jet."
• Peronosporoz. This is also a fungal disease that can destroy a plant in a short time. Most often begins to develop even at the stage of growth of seedlings. The fight is conducted with the use of "Ridomil Gold", "MC", "Kuprosat".
• Sclerotynyosis. Also refers to fungal diseases. At the initial stage on the leaves there is a fluffy mildew, which then develops into black spots and culture rot. The fight is conducted with the help of Fitosporin-M.
• Angular blotch. A dangerous ailment that is carried from plant to plant with the help of insects. It often occurs when the untreated seeds are planted in the soil. It is treated by spraying with 1% solution of Bordeaux salt.

White spots of

appeared on the cucumber seedlings. Cucumber dries up the seedlings of the cucumbers: causes

Most often the foot dries out at the initial stage of the fungal disease, in the people it is called the "black leg".Spores of the fungus grow very quickly, so you need to fight as early as possible.

Ways to combat the drying foot:

• Soil should be moderately moist. It is better to water rarely, but abundantly, than often and gradually. If you so water, then inside the lump there will always be moisture, despite drying out from the outside.
• The black leg grows in conditions of high humidity, accordingly carry out ventilation of the greenhouse and avoid stagnation of water. Buy TMTD preparations or Planrys and soak seeds in them.
• Soil around the seedlings mulch. You can sprinkle the top of the soil with sand or turf.
• Damaged bushes watered with a weak solution of potassium permanganate. Further, the soil is swollen with sand.
• For the purpose of prevention and at the first signs of the disease, the bushes are treated with biological preparations( Bactofit, Planris, Phytosporin, Phytolavin).

Cucumber seedling dries

leg Cucumber seedlings are frozen: what to do

Of course, if the lesions are significant, then there is nothing left to do but reseed the seedlings. Cucumbers very badly survive the cold, so do not rush them to land in the open ground. But if the damage is small, then you can independently and in a short time cure the culture and restore it.

Ways to cure frozen seedlings:

• Stop watering for a while. Do not water sprouts for a couple of days.
• Treat Epin. This drug removes heavy metals and restores the leaves.
• You can pour the roots with a small amount of Zircon solution. Watering is carried out only when the land is a little wet. This allows you not to burn the roots.

Cucumber seedlings have frozen

Why did the cucumber seedlings turn white?

The causes of whitening of cucumber seedlings are not so many and an experienced gardener will be able to find out what disease affects seedlings.

Causes of whitening of cucumber seedlings:

• Powdery mildew. This is a fungus that can be combated with a 0.5% solution of soda ash with laundry soap. Also 0.5-1% solution of the Bordeaux liquid is effective. You can use decoctions of plants - horsetail, marigolds.
• Lack of minerals. Often the tip is whitened with a lack of copper. In this case, it is expedient to fertilize mineral fertilizers.
• Mite or aphid. In this case, it is advisable to spray with a Strela or Zitcor.

Why did the cucumber seedlings turn white?

Cucumber seedlings are very fragile, so it requires careful care. Keep a stable temperature in the greenhouse and do not over moisten the culture.

VIDEO: Diseases of cucumber seedlings