Why do yellow cucumbers in the greenhouse: what to do with the leaves, the yellowed twists, the stains in the greenhouse dry

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Cucumbers can turn yellow in the greenhouse due to improper care of them cucumbers in the greenhouse may turn yellow due to improper care of them Perhaps even an experienced gardener can not insure themselves against any disturbances in the growth of his charges, that is plants. And even if he already knows everything about cucumbers, uses both folk remedies, and store preparations, creates an optimal mode of care, in short, all the conditions for the growth of cucumbers, there may be unpleasant surprises. These are the same pests, and not only.

Contents:
    • most common causes: yellow cucumbers in the greenhouse
    • Lack of minerals: what if the yellow cucumber leaves in the greenhouse
    • Yellow spots on cucumbers in the greenhouse
    • Why suffer cucumbers in the greenhouse: twisted leaves
    • Prevention yellowing cucumber
    • reasons why yellow cucumbers in greenhouses( video)
    • disease cucumber leaves in the greenhouse( photo examples)

most common causes: yellow cucumbers in the greenhouse

It can not be said that there is one main reason why the cucumber turns yellow. Equally, it may be associated with insufficient irrigation and with little natural pollination, and, attacking cucumber diseases. But even if all you know and do not allow, then, for example, for congestion cucumbers ovaries forget to follow.

If the cucumbers turn yellow, then, probably, the temperature regime is not observed in the greenhouse If cucumbers turn yellow, then perhaps in the greenhouse is not observed temperature mode

Possible causes yellowing:

  • With insufficient pollination happens inadequate tying, cucumbers may not develop full strength, experienceStress and turn yellow;Plants
  • affect insect pests or fungus;
  • The agrotechnics of cultivation of cucumbers in a greenhouse is broken - the exhausted ground, a lack of light, the broken temperature mode.

Poor grow cucumbers in the greenhouse when the low temperature stress for them. In dangerous days, possible frost, you need to cover the cucumbers with a special bubble wrap. And many gardeners to ensure that the plants are not frozen and not turned yellow, put next to cucumbers bottles with warm water. Even not warm - hot.

Lack of minerals: what if the yellow cucumber leaves in the greenhouse

Why can still be seen yellowing leaves, as is the lack of minerals. Yellow leaves can "decorate" a cucumber with a shortage of nitrogen. First the leaves are just pale, and then they completely turn yellow, and the veins, and the entire leaf space. Then the whips also turn yellow. And with nitrogen deficiency, the fruits are twisted and twisted. In a word, they become ugly.

One of the reasons why the leaves turn yellow in the greenhouse may be poor quality soil One of the reasons why in the greenhouse yellow leaves, may be of poor quality soil

Why is there a shortage of nitrogen?This happens because of the excessive application of wood ash, superphosphate, potassium-based fertilizers. To avoid a shortage of nitrogen, you need seedlings of cucumbers for a couple of days before planting in a greenhouse to feed properly with fertilizers, sprinkle with a solution of trace elements.

Yellow spots on cucumbers in the greenhouse

Perhaps the cause of the appearance of yellow spots are diseases. The plant fungus is affected. For example, the so-called false powdery mildew. It attacks plants in July-August. Ill bright yellow rashes on the leaves signal the disease. When watering, and when it rains the fungus rapidly spreads from one plant to another, and under unfavorable conditions for 10 days is able to destroy the harvest.

Drugs containing copper will help cope with this scourge. But the results can be small, because these tools are maximally effective as prevention. You can use biological fungicidal drugs. In soil, such drugs do not accumulate. When the plants are treated, wait 2 days, after which time the fruits can already be eaten.

Why cucumbers are sick in the greenhouse: the leaves of

curl It happens quite often under the influence of high temperatures. To that "to help" can also lack of potassium, nitrogen and magnesium. And also the invasion of pests can lead to twisted leaves.

For example, the same aphid. Which is arranged on the reverse side of the sheet, and contributes to its twisting, which is beneficial to it - so it makes a shelter from external enemies.

If the cucumbers are curled leaves, then they can hurt If cucumber curled leaves, they can hurt

What if curled leaves around the edges( twisted):

  1. If you think that this happened because of the lack of moisture, the plantsLiterally wither, then loosen the upper soil layers, and then water the plant abundantly.
  2. After watering can produce mulch moist already gryadochek that, of course, reduce the percentage of evaporation of moisture inside the greenhouse.
  3. You can also make useful spraying with the support of biostimulators like Biolan and Regoplant.
  4. If plants do not have enough nutrients, you need to make an unscheduled top dressing with Agricola or the Master.
  5. It is good to do both root and foliar top dressing, because sometimes a fairly weak solution of complex fertilizer. Use
  6. against pests modern biologics or folk remedies of the same aphid( applied tops and garlic, and hot pepper, and soap solution).

course, first find out - why leaves turn bright yellow and then, and then another, and began to curl. Perhaps the bully is too large, or the density of the planting is such that the light just does not penetrate to the lower leaves. Plants turn yellow and dry.

Prevention of yellowing of cucumbers

First of all, it is temperature control. Do not allow frost, yes - they can be outside the greenhouse, there's nothing to be done, but inside the temperature should be sufficient. And at the same time it is dangerous to arrange overheating, this is also a stress for cucumbers.

In the store for vegetable growing, you can buy various preparations to protect cucumbers from pests and diseases The shop Horticulture can buy a variety of products for the protection of cucumber against pests and diseases

did not allow the pest to enter the site. Remember that even lending a neighbor a shovel, you can bring a pest on it, and then the colony will grow very quickly.

Do not water cucumbers with cold water. Do not do this in the hot hours, substituting cucumbers for the risk of burns. Regularly ventilate the greenhouse, allow the same bees to get inside the structure, so that pollination is realized.

reasons why yellow cucumbers in greenhouses( video)

yellowing cucumbers - is a signal of an ambulance, ovoschevodu signal to help their crops. Identify the reason, use the most soft means, perhaps, folk methods.

Good harvest!

disease cucumber leaves in the greenhouse( photo examples)



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