Phytophthora is very fond of members of the nightshade family, so it is unlikely that it will be possible to achieve complete disposal of tomatoes from this fungus, especially in a humid climate. But even a novice gardener can limit its distribution and harmful influence.
Soil disinfection
The earth is watered with a weak solution of copper sulfate or a solution of peracetic acid (9% liter of vinegar is mixed with 200 ml of hydrogen peroxide and left for a week in a warm place).
Disinfection is carried out in the spring, 2-3 weeks before planting tomatoes.
A week after disinfection, trichoderma can be populated into the ground.
Greenhouse processing
In order to disinfect the surface of the greenhouse, it is not recommended to use aggressive preparations. A solution of any chlorine-free bleach is perfect for this purpose. It is bred according to the instructions sprayed on the surface of the greenhouse. Doing this is not recommended at temperatures below +5 degrees. Residues must be removed with a rag.
Ventilation
If the night temperature does not fall below +12 degrees, then the greenhouse should be left open to avoid the formation of excessive condensation and humidity inside it. At low temperatures, only a window can be left open. The main thing is to prevent a draft, it is destructive for landings.
Watering
Watering should be carried out in the first half of the day, minimizing the area of ​​moistened soil. To do this, you can use the drip irrigation system, which is quite easy to make yourself, for example, from plastic bottles.
Mulching
Mulch (sawdust, covering material, mowed grass) is used to prevent bacteria from the soil from reaching the plant itself. The main thing is not to mulch the soil until the earth is completely warmed up.
Treatment
If the humidity in the area is high, and the weather is not hot, but rainy, then phytophthora will definitely not be avoided, and fungicidal agents must be connected to combat it.
