* Insidious late blight.
Brown rot of fruits (late blight) is caused by the fungus Phytophthora infestans and affects leaves, stems and fruits.
On the upper side of the leaf, brown blurred spots are formed along the edge, and in wet weather - a whitish bloom.
Dark brown stripes appear on the stems, and brown subcutaneous spots on the fruits, quickly covering the entire fruit.
The disease is aggravated by a sharp change in day and night temperatures and high humidity.
Preventive measures.
Do not plant tomatoes where tomatoes and potatoes grew in the previous 4-5 years.
The garden bed with tomatoes should be as illuminated as possible and blown through with air. Avoid contact of leaves with soil.