To grow a good harvest, you should look after the plants at any stage of their growth. Often tomatoes and other crops begin to die due to a fungal infection. The causative agent of the disease can destroy leaves, stems and fruits in a few days.
The causes of late blight
Blight, or blight, affects plants at a time when high air temperature is combined with high humidity. The spread of fungal spores can occur through dew drops. It takes about 1 hour to germinate if the ambient temperature exceeds + 25 ° C. When outside + 15 ° C, spores develop more slowly. In such conditions, they need 3 days to germinate.
Spores can be spread by gusts of wind for several kilometers. They can also be found in the ground, on the tubers of the plant, or on the fruits. If there are no suitable conditions for fungal microflora, it remains viable even at low temperatures (in winter).
Other reasons for the spread of late blight include:
- The density of plantings. If tomatoes are planted close to each other, under such conditions, the fungal microflora will actively develop. Dense plantings retain moisture better.
- Excessive amount of lime in the soil. Promotes the multiplication of late blight fungus.
We remove from the garden of all satellites phytophthora
Signs of plant disease appear 3-4 days after the occurrence of suitable conditions for the life of fungal microflora. On the leaves you can see spots. They begin to curl and dry. In addition to spots, plaque (spores) can be seen on the plant. Further progression of the disease leads to rotting garden crops.
To collect a good harvest, we remove all the late blight satellites. Soil may be contaminated. Therefore, it is recommended to sanitize the land before planting the crop. Physalis is well suited for this procedure. It is poured with hot water at a rate of 1: 2 and insisted 24 hours. After a day, dry mustard is added to the infusion. A bucket of liquid will need 200 g. The beds are watered with the resulting solution.
To prevent harvest loss, preventive treatment of horticultural crops should be carried out. Every 10 days the beds are recommended to be irrigated with the following composition:
- 1 liter of serum;
- 10 l of water;
- 25 drops of iodine.
You can alternate processing with other compounds. To prepare the remedy against late blight, 200 g of garlic should be insisted in 1 liter of water. After a day, the resulting composition is dissolved in 10 l of water. For another recipe, it is recommended to dissolve 1 liter of kefir in 10 liters of water.
To avoid late blight due to the high content of lime, it is recommended to add peat or sand to the soil. If tomatoes are grown in a greenhouse, it is necessary to provide them with good ventilation. The distance between tomato bushes should be about 50 cm. If tall varieties are planted, the distance between plants is recommended to be increased to 80-90 cm.
In the autumn, after harvesting, it is recommended to remove the tomato bushes from the garden along with the roots, and then burn them. Infected cultures should not be used to create compost.