Is there a way to stop blight??

[bus1key]

Cant tell from the pics if its Late Blight or Septoria. I've slowed the spread of Septoria tremendously by picking yellowing leaves at first siteing and then spraying with 1tbl spoon baking soda per gallon of water with a couple drops of dawn or joy liquid dish soap. Once a week and after any rain. It would be a big undertaking with so many plant. Good luck !