This year, when growing tomato seedlings on the leaves, the following infection was noticed (see photo).
It appeared almost instantly (it was not yesterday afternoon, but today in all its glory and in large numbers).
Now there are about 100 seedlings on the windowsills, of which 25 are infected pieces, and not nearby, but in different parts of the windowsills (although this may be due to the fact that I rearrange them closer / further from the light for uniform growth).
Tell me what kind of attack it is and how you can fight it? I tried to search by pictures in search engines - it did not bring much result, everything seems to be different. And it's really a pity for the harvest
Tomato seedling disease