Why are the leaves yellow and dry on cucumbers on the windowsill, in a greenhouse, on a bed in open ground? How to save cucumbers from yellowing of leaves?

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Yellow leaves on cucumbers: causes, methods of elimination.

Any gardener knows the real price of a good harvest of vigorous, ripe cucumbers. Growing vegetable culture requires a lot of time and effort.
In order not to get disappointment at the sight of yellowed leaves on the plant, it is necessary to familiarize yourself with the main causes of this problem in advance.
About this, and how to timely eliminate the slightest signs of yellowness on the leaves will be discussed in this article.

Why do the leaves on the cucumbers on the windowsill turn yellow and dry?

Most often, a change in the color of the crown of the plant, when growing seedlings on the window, occurs at the time of the formation of the second leaflet.
This happens for several main reasons:

  1. The lack of micro and macroelements. Yellow the first leaves - Not enough phosphorus, magnesium, potassium. Changing pigmentation upper leaves - We need top dressing with iron, boron, manganese, zinc.
  2. Incorrect ratio of the proportions of trace elements in the ground (potassium and ammonium salts).
  3. Small pots. With insufficient space in the container, the root system does not have the opportunity to develop correctly. The seedlings begin to gradually turn yellow. It is enough to transplant cucumbers into more spacious containers to get rid of this problem.
  4. Uneven watering. Cucumbers do not tolerate dry or too humid soil. This negatively affects the development of the root system.

Less common reasonbut taking place - foam containersin which plants are placed. The chemical composition of such a device penetrates the soil, causing poisoning of seedlings.
It is better not to use this container. In extreme cases, isolate the harmful effects by wrap of foam in polyethylene.

Yellow leaves on cucumbers

Video: Cucumbers on the windowsill

Why are the leaves on cucumbers in a greenhouse turn yellow and dry?

Rapid aging of cucumber seedlings with poor care

The yellowness of leaves can appear not only in young vegetable culture.

  • Unexpected natural cooling. An insufficiently insufficient greenhouse, with a sharp cooling, can lead to hypothermia, which leads to a change of color and drying out the green crown
  • Insufficient watering. A small amount of water, even with frequent watering, does not give the necessary flow of moisture to the roots. As well as rare, abundant watering is useless for the full development of the plant.
    Water lingers on the surface of the Earth, without access to the root system. The roots gradually dry out, the leaves turn yellow, wither. Uniform watering 2 times a week will help to avoid this problem.
  • Sunburn. Moisture hit the leaves, at excessively high temperature, leads to a change in color and subsequent drying of the sheet mass. Cucumbers do not tolerate high temperature, especially in greenhouses. This leads to sluggishness and rapid aging of the plant. Do not water cucumbers during the highest day temperature. Systematic, careful ventilation excellent prevention in this case.
  • Powder. In plants affected by this disease, the leaves have a twisted and yellow look. Most often, such a disease is provoked by sharp temperature changes in the greenhouse.
  • The fungal parasite is a pitiosis. Rowing the roots caused by this disease stains the leaves in yellow.

Video: so that cucumbers do not turn yellow! A simple way!

Why are the leaves on cucumbers in the garden turn yellow and dry?

Diseases of vegetable crop

There are no special differences in the causes of the painful type of foliage, when growing vegetable crops in the beds, there are no above parameters.

They are similar:

  • Improper care
  • Incorrect watering
  • Poor fertilized soil
  • Defeat harmful insects
  • Infection with various diseases

Video: Why do the leaves of cucumbers turn yellow?

How to pour or spray cucumbers if the leaves turn yellow?

Proper watering of cucumber seedlings

Industrial drugs.

  1. "Quadris". Before using the drug, prepare a solution at the rate of 4 ml per 5 liters of warm water. Spray The yellowed crown in calm weather.
  2. To combat fungal and bacterial diseases, prepare bordeaux mortar: Dissolve 50 g of copper sulfate in 1 liter of hot water. Add, after complete dissolution, another 1.5 liters of simple water. Combine with 50 g of lime, bastard in 2.5 liters of cold water.
    Process yellow leavestwice. The frequency of once every 2 weeks.
  3. Make it root top dressing Seedlings - 5 g of ammonium nitrate, 5 g of superphosphate, 5 g of potassium salt dissolved in 5 liters of water.

Chemical compositions successfully fight with yellowing of the foliage. But not every amateur garden accepts such methods.

To solve this problem, you can use folk remedies.

Spray cucumbers:

  1. Infusion of mullein in a ratio of 1: 3, diluted, after a three -day exposure, water.
  2. Solution kefir or serum, in the proportion of 1: 5.
  3. Garlic infusion:
  • 25 g of chopped garlic
  • 20 g.
  • 0.5 liter of boiled water
    Mix the entire composition, withstand the day in a dark place. Dilute with water 1: 9 before use.

Preparation of solutions from yellow leaves by home

To preserve the healthy color of the leaves and get a decent crop, follow simple care requirements:

  • Cover seedlings when the temperature decreases, during cooling
  • Water evenly vegetable culture
  • Treat the soil on the beds with a weak solution of potassium permanganate, when infected with a black leg
  • Feel the soil regularly
  • Do preventive processing, seedlings from infections and pests
  • Do not do fuel feeding and watering, while the sun is at the zenith

Follow the correct crop rotation - this is the key to a plentiful crop. Grow cucumbers in one place, once in a four -year period.

Do timely top dressing in order to avoid further problems with leaf diseases

Video: Why do leaves turn yellow in seedlings of cucumbers?