Cucumber diseases in the greenhouse

It's great to have beautiful juicy cucumbers grown on your table, grown on your own, and even in winter, when the bloom has not started around, because it's cold. Having a harvest on the table is not only delicious, but nice, but it's also a calm for your own health - you know that there are no nitrates in your cucumbers.

Cultivation of cucumbers in a greenhouse is a grateful work, however, not everything is as easy as it seems. The greenhouse is a favorable environment for the development of all kinds of diseases affecting vegetable crops, so you need to be careful to react in a timely manner and not let spread diseases. What should I look for?

Symptoms of cucumber disease in the greenhouse

1. The lower leaves began to turn yellow, and the growth of the main stem and lateral shoots slowed considerably and the zelenians acquired a pointed wedge-like shape. All this suggests that plants do not have enough nitrogen.
2. Stem suddenly stopped in growth, and the leaves are dark green, small and very quickly dry up. The presence of these signs suggests that plants need phosphorus.
3. The appearance on the plants of the white border should lead you to the idea that plants lack potassium.
4. If suddenly the tips of the leaves, young buds become brittle and dry, this indicates the lack of sufficient potassium in the soil.
5. Appearance of white spots of a chlorotic type on the leaves of the middle and upper tiers - perhaps the soil is acidic or there is a lot of lime in it.

Once you see that your plants have started to change and deviate from the norm - do not hesitate. Prevent cucumber diseases in the greenhouse and save the crop can only be a timely and correct solution to the problem.

Why yellow cucumbers in the greenhouse

Diseases of cucumbers in the greenhouse can be of a different nature. One of the signs of the disease of the plant is the yellow color of the cucumber. What is the reason for this? The reason can be several:

1. If the temperature regime is disturbed, the plants may turn yellow. This is possible with a very hot and humid microclimate or vice versa, the temperature is too low.
2. Incorrect watering can also cause yellowing of plants.
3. The lack of essential microelements in the soil, such as phosphorus and nitrogen.
4. Incorrectly selected variety. If you planted in a greenhouse a bee - dusted variety of cucumbers, then there will be no crop, since no one will pollinate the plants.
5. Lack of light can also cause yellowing.
6. If in one place several seasons in a row plant one culture there may be an accumulation of infections in the soil.
7. Also, yellowing can be a consequence of an incorrect pinching. As a result, the plant can be overloaded by maturing a large number of fruits simultaneously.
8. And maybe the plant is already old and just put it in yellow and withered.

Diseases of cucumbers in the greenhouse can be activated by the appearance of a "dome" of leaves under the roof. Plants, expanding, form a shadow and as a result, the lower layers of plants begin to turn yellow. To avoid this, it is necessary to form plants so as not to admit this. If this happens, remove the bottom yellow leaves with a garden knife or pruner, and in no case do not tear them with your hands, so as not to damage the whole plant, which is fragile and tender.

The appearance of the arch under the roof of the greenhouse is most often due to the thickening of plants in the greenhouse, that is, there are too many plants. The rate of planting cucumbers by 20 square. M 60 bushes. This is an ideal option, however, as a rule, no one plants that way.

Growing cucumbers in a greenhouse in winter, you go against nature and therefore, to get a rich harvest, be on the alert all the time, so as not to miss the moment when plants begin to change under the influence of unfavorable conditions.