Also called Phytophtora infestans, is a dangerous fungus which attacks mainly tomato and potato.
It spreads out very fast.
Attacking leaves, fruits and stems.
Appears when humidity is high.
First symptoms are white powder and black veins on the lower side of the leaves.
If you are using head irrigation with sprinklers,
you are highly increasing the chance of the appearance and spread out of this fungus.
If you can, It is better to use drip irrigation.
It is recommended to use at least 4 kinds of different pesticides,
and alternate between them every 3 days, in order to overcome pest’s resistance,
and completely exterminate them.
Best pesticides for Late blight,