To prevent the disease late blight tomatoes are not planted on the same plot for several years. To change tomato garden on a potato does not make sense, because potatoes and also suffers from late blight.
To suppress fungal infection in the soil under the tomato patch is treated with iron sulphate. Iron sulphate is dropped in a dry form, flow rate of 10 g per sq. m. treatment can be in the early spring, even non-melted snow. To use this method from year to year in one place is not recommended. Excess iron will destroy the microflora of the soil.
The best way to cleanse the earth of fungus causing disease of tomato blight, and help the cover crops grown on affected the beds in the spring, before planting the seedlings in the ground, or in the fall, after harvest. It is best to consult with a soil treatment of a plant of the cabbage family - cress, white mustard, and rapeseed. They need to be planted in the loosened soil and grow to a height of about 30 inches, and then mow and dig directly into the garden. At the same time the soil provided natural fertilizer.
At the first sign of late blight on the plants, drying out of leaves, wilting of the Bush, the plants treated with the following drugs: fitosporin-M, Cymoxanil, Famoxadone, Thanos, MANCOZEB, Mefenoxam, Ridomil gold. Carefully read the instructions to the drugs.
If you buy tomato seedlings at the market, before planting treat it Phytosporin or one of the above drug.
Choose early varieties of tomatoes that have time to give the harvest to the mass distribution of Phytophthora.
How to treat late blight of tomatoes
Tomato late blight – a fungal disease that affects tomatoes since mid-August. Manifested in the form of drying up of Bush and brown spots on fruits. To obtain a good harvest of such plantations will not work, but to prevent the spread of infection is possible.