What is the best control for tomato blight?

Question:I have got it for the past 3 years and tried spraying with something every week last year and it obviously did not work.. any suggestions?

Answers:
Here is some information on several types of tomato blight. These discuss identification and cultural and chemical control methods. Good Luck!

http://www.extension.umn.edu/projects/ya...

http://www.uvm.edu/extension/publication...

http://www.ppdl.purdue.edu/ppdl/expert/t...