2024 Author: Gavin MacAdam | [email protected]. Last modified: 2023-12-16 13:38
Cucumber root rot is especially powerful if the cucumbers were planted on soils on which various pumpkin crops had previously grown, as well as with a sharp drop in soil temperatures and with cold watering. Sometimes root rot is also capable of attacking seedlings - as a rule, this happens in the case of its improper planting, with its additional hilling or with excessive deepening. If you do not start the fight against this dangerous disease in time, crop losses can be very significant
A few words about the disease
On plants attacked by root rot, the leaves begin to fade gradually. It is especially common to notice such wilting when a long cloudy weather is established. The leaves of the lower tiers quickly turn yellow, and the stems at the very roots crack and also acquire a yellow color. To detect these symptoms, it is enough to slightly shake off the soil. Root necks and roots of plants attacked by the disease turn brown after some time, the ovaries die off, the main root becomes loose and turns dark brown, and its surface gradually collapses.
The causative agents of the ill-fated misfortune are parasitic fungi that are constantly in the soil. And they persist throughout the year not only in the ground, but also in the remains of plants.
The development of a dangerous ailment is largely favored by overheating of the soil in greenhouses over twenty-eight degrees, as well as a decrease in soil temperature to sixteen degrees.
How to fight
When planting seedlings in the holes, you should not fill up the stems - the usual deepening of the pot is quite enough. During the summer season, soil is not added to the stems either. Yes, and you should not huddle cucumbers. And, of course, it is not recommended to cultivate cucumbers in those areas where their relatives grew last year.
When watering cucumbers, it is important to water exclusively the soil without spraying a stream of water on the plants themselves. Watering is usually carried out in the morning (until about eleven o'clock) and with extremely warm water, the temperature of which should be in the range from twenty-four to twenty-five degrees. Also, when growing this crop, it is important to ensure that the infected parts of the plants are not covered with soil.
If the disease on the cucumbers was nevertheless discovered, then you should shake off the soil from the stalks to the very roots, and then treat the plants with a special composition, for the preparation of which a teaspoon of copper sulfate is dissolved in 0.5 liters of water (it can be easily replaced with polycarbacin or copper oxychloride) and three tablespoons of chalk (wood ash or fluff lime can be an alternative to chalk). Everything is thoroughly mixed, after which the infected parts of the stems are treated with a brush soaked in the solution. At the same time, the stems are processed from the roots and up to twelve centimeters in height.
In addition, the infected areas can be treated with chalk, ash or crushed coal and then allowed to dry thoroughly.
In order for the affected crops to begin the formation of new roots, a fresh layer of good fertile soil is poured onto them. In adult plants, the lower leaves are cut off. Then, after waiting for the cuts to dry out, the stems are laid on the ground and lightly sprinkled with new fertile soil. And when the formation of new roots begins (after one and a half or two weeks), they add a little more earth. Unfortunately, this method does not always help, however, at the initial stage of root rot development, it gives a very good effect. If the disease progresses, then the plants are dug up together with earthy lumps, and the resulting pits are filled with fertile soil.
All dead plants are always removed along with the soil and burned, and the holes are watered with one or two liters of a solution of copper sulfate (for ten liters of water - two tablespoons of the product).
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