Cucumber is a popular vegetable that sometimes goes missing before ripening for a number of reasons. Gardeners are advised to figure out why the culture dries up or rots before harvesting, usually the death of plantings is provoked by diseases and pests of cucumbers.

Varieties of cucumber diseases

Initially, you should figure out what destroys the seedlings and the already ripening fruit. Among the most common problems with sounded vegetable crops, the following provocateurs can be distinguished:

  • Anthracnose... The cause of the deformation of the fetus is infected plant debris or unfavorable weather conditions (heat and high humidity).
  • Phytophthora... Phytophthora infestans is a mushroom that cucumbers loved no less than gardeners and gardeners. Damaging the stomata of a vegetable, the pest grows into its tissue and destroys the fruit.
  • Ascochitosis... In wet weather, unstable temperatures, or overly dense crops, Ascochyta class fungus attacks the cucumber leaf.
  • Cucumber bacteriosis. A film greenhouse in the spring is a favorite place for the causative agent of this disease. The degree of damage to the cucumber depends on the period of detection of the infection.
  • Fusarium cucumber. Fusarium is a type of fungus that infects soil and seeds. The cucumber crop will not be affected if the vegetables have strong immunity to ticks and other pests.
  • Melon aphid. A small parasite with high humidity can cause irreparable damage to an entire cucumber plantation.
  • Spider mite. Greens are the parasite's favorite delicacy, so it settles in the zone of the lower cucumber leaf. In the greenhouse, the insect is most dangerous, because it envelops many ovaries with cobwebs.
  • Powdery mildew. A small white spot subsequently turns into a brown lesion that looks like rust. It is really possible to save the crop with this pathology, but one cannot expect good fruiting.

Diseases of cucumbers

Powdery mildew should be distinguished from its false counterpart. Peronosporosis will not stop at the hole in the fruit and its slight deformation, but will completely destroy the entire crop. Root rot, white rot and olive spot will also quickly kill the ovaries.

Cucumber disease symptoms

Diseases and pests of garlic

It is quite difficult not to see the defeat of the bush, even if the nature of the formation of the problem is unknown. The main signs of cucumber pathology are as follows:

  • Color change. Usually both the leaf surface itself and the fruit itself are transformed. With powdery mildew, white spots begin to appear. Cucumber anthracnose are yellow formations on the leaf, turning over time into ulcers. Brown blotches on the ovary are evidence of the defeat of the vegetable by an angular spot. Purple color appears with downy mildew, and gray can mean the beginning of an aphid attack.
  • Surface deformation. Rot of any variety (especially olive) forms a slippery coating on the leaf and the vegetable itself. Fetal curvature often occurs with cladosporia. Leaves with this disease are also deformed. Their rupture occurs during anthracnose, when the leaf plate is damaged.

Diseases of cucumbers and their treatment

Pests and diseases of tomatoes in the greenhouse

Reinsurance in this case will definitely not hurt.The appearance of one of the sounded parasites can nullify the opportunity to harvest a large harvest.

Biological agents

This method of preventing cucumber disease is gaining popularity. The most common biological agents:

  • Lactic acid bacteria. These microorganisms are powerful sterilizers. Their main feature is the suppression of the reproduction and growth of pathogenic formations. The beneficial bacteria are not affected by this process. When using pathogens, it is recommended to opt for Bitoxibacillin during the destruction of spider mites. Restriction - refusal to eat cucumbers after treating the bushes with the specified agent for five days.
  • Mushrooms. Trichodermin is a drug based on the Trichoderma controversy. A useful mushroom is used when soaking the roots of a cucumber bush (5 liters of water per 20 g of the product, if desired, to treat one hundred plants) and vegetable seeds (1.5 liters per 20 g per 10 kg of planting material). In this case, Verticillin is suitable, which affects the whitefly most of all. Limitation - the drug is ineffective in the fight against pupae of harmful insects.
  • Flies. The palm should be given to the trichogramma, which destroys the eggs of parasites. The main condition for the use of a biological agent is the early release of the insect and its correct distribution over the cucumber bushes. The army of orderlies of garden beds is replenished with entomophages. It should be remembered that during chemical treatment they can also die.
  • Ladybugs. At first glance, it seems that the insect cannot scare away pests. However, a spider mite will not be able to live in the same area with a ladybug, which is recommended to be identified as neighbors when planting cucumbers.
  • Birds. Birds are the main enemies of the melon aphid. Her tits are especially fond of, which can really be attracted with the help of a small piece of bacon. The product must be unsalted so as not to scare away birds. Redstarts, wagtails and nuthatches can come to the aid of tits.

ladybugs

Chemicals

  • Top dressing of the soil potassium will not harm for the prevention of cucumber leaf diseases. Even at the initial stage of the attack of the ovary with powdery mildew, this method will definitely help. Poisonous chemistry is used for large foci of pest infestation and only in emergency situations.
  • Bordeaux mixture (15%)... The drug is especially suitable for anthracnose. If the component is absent, it is replaced with bleach at the rate of 40 g per small bucket.
  • Fitoverm... When spraying the ovaries, the agent paralyzes the parasites that destroy the cucumber beds. Without polluting the environment, Fitoverm is used even during dry periods. Dilute 10 ml of the preparation in 1 liter of water. Vegetables are processed twice during the growing season.
  • Phosbecid... According to the scheme of action on pests, the drug has much in common with Fitoverm. It is forbidden to treat cucumbers with a highly toxic substance during the flowering of a garden crop. When attacking the beds with whiteflies, aphids and mites, it is recommended to spray them with a solution in the proportion of 2 liters of water - 10 sq. M.
  • Agravertine... The paralyzed insect dies if the ovary is treated with a liquid at the rate of 2 liters per 5 ml of the drug. It is recommended to spray cucumber bushes in calm weather in the absence of heat. The ideal processing time is morning and evening.
  • Inta-Vir... The poisonous chemical is able to destroy up to 50 species of harmful insects. The nervous system of unwanted guests in the cucumber garden is instantly amazed if treated with Inta-Vir. The limitation is the absence of rain after spraying the product. After a couple of weeks, the treatment should be repeated.
  • Karbofos... The universal agent retains its toxicity at low temperatures. The product can be purchased in tablets, granules, powder, liquid and emulsion. The disadvantage is the need to act directly on the parasite itself.Otherwise, he will bear offspring and destroy the cucumber crop.

Karbofos

Diseases of cucumbers

It is important to remember that the sounded drugs are best used as a last resort. In most situations, it is enough to do with biological agents if the vegetable is properly planted.

Folk remedies

Chemicals alone are sometimes not enough to get a good harvest. They are helped by centuries-old tips from our ancestors:

  • Mullein... Indispensable, if necessary, to fertilize the soil with high quality. It is better to use natural manure without chemical impurities. Humus is used in a ratio of 5 parts of mullein to 2 parts of straw and sawdust.
  • Milk solution. Ten drops of iodine per liter of liquid is a great way to treat cucumber fusarium wilting.
  • Fermented herb. A well-known way to answer the question of what to do if holes appear on the leaves of cucumbers is quite popular among gardeners. It is necessary to pour a bottle of "green" into a bucket of water and flavor the soil with a useful substance.
  • Tincture of onion or garlic. Enough 10 liters of water and 200 g of the husk of these gifts of nature for soil processing during the ripening of cucumbers.
  • Urea. With the help of it, it is really possible to get rid of many pests that destroy cucumber fields. This ingredient is mixed with copper sulfate.
  • A piece of chalk. A natural remedy for combating cucumber ascochitis is not very expensive. It is not forbidden to replace it with sawdust or peat when preparing the soil before planting cucumbers.
  • Wood ash. The proven method works no less effectively than an expensive chemical preparation. It does not hurt to add laundry soap to a bucket of water with 200 g of ash.
  • Infusions... Delphinium is effective against many pests if it is steamed overnight in order to disorient then harmful insects. Nasturtium helps with fungal infections of cucumbers. Root rot is powerless against the infusion of marigolds. Aphids are discouraged by processing the site with a decoction of wormwood and celandine. The proportions of any tincture - 1 kg of plants per bucket of water.
  • Vegetable presses. Radish juice is the perfect way to fight spider mites. If you wish, you can replace it with horseradish or garlic squeeze.

Mullein

Prevention of disease damage to cucumbers

A few simple tips will tell you how to get rid of many problems when growing a healthy vegetable crop.

Correct fit

When selecting seeds, it is recommended to take goods that have undergone special treatment. Without preliminary disinfection of the planting material, you will then have to think about the question of how to treat cucumbers. The soil must be well warmed up before sowing. 12-14 degrees - the minimum indicators at which cucumbers are planted. The quality of the soil also plays an important role in the desire to harvest a large crop. The soil for planting is selected taking into account its looseness, fertility and purity.

Important! The main rule for the gardener is that planting should be rare. It is in this case that you do not have to think afterwards what to do with a black leg in cucumbers. Less weeds, fewer problems.

Special recommendations from specialists

Prevention of bacteriosis of cucumbers and other diseases is invaluable. Affected beds will never disturb the gardener if he heed the following tips:

  • Right choice. When buying planting material, you should give preference to varieties of cucumbers that are resistant to all kinds of diseases. Competitor, Zhukovsky, Bunny, Caprice and Tanechka have proven themselves excellently.
  • Denial of salvation. With mosaic, it is better to destroy young ovaries than to treat them. As a result of such a struggle, instead of extending the life of a cucumber, it is really possible to get only wrinkled, rusty fruits. With white rot, the affected areas are also unambiguously removed urgently. It does not hurt to carefully process the containers in which the seedlings were grown.
  • Timely disposal of plant waste. The best remedy for parasites is the destruction of old foliage. Whole colonies of pests settle under its cover.
  • Correct watering. It is very difficult to deal with root rot, and it is formed due to the excessive use of cold (sometimes ice) water from the well. Additional advice - cucumbers are also not watered under the root.
  • Airing. The black leg of cucumbers often appears in greenhouses with insufficient ventilation. The ideal solution to the problem is to grow cucumbers in the open field, and not on a windowsill or under a film.
  • Weeding regularly.
  • Disinfection... In this case, Fitosporin will help, which eliminates bacterial damage to the ovary.
  • Forced prevention. With a massive defeat of cucumber beds, experts recommend abandoning sowing in the problem area within five years.
  • Refusal of co-cultivation. White rot often attacks the ovary if the gardener wants to place several vegetable crops at once on the same territory.
  • Construction of glue traps. Bright yellow pieces of plywood should be greased with castor oil, honey, or Vaseline. Traps need to be flushed periodically to make the homemade remedy more effective.

Important! The hybrids have proven to be excellent in terms of resistance to various diseases. Remember this when selecting seeds.

Diseases of cucumber leaves and the product itself are a consequence of the lack of awareness of novice gardeners in many issues. With proper care, the ovary with a healthy vegetable will never suffer from holes, spotting and wilting. A properly selected drug for eliminating pests will also help avoid the question of what cucumbers are sick with.