What is the remedy for tomato blight (leight blight)?

[souece](https://images2.weku.io/DQmcmAcXoE4bozE2UKsQGLCR1sXDJKyaGFsUQ56y4DN92nV/01.jpg)To collect seed from healthy tomatoes crop. Disease-resistant tomatoes should be cultivated. Only after irrigation, the irrigation application should be stopped. Penczyb 80 wp or redomile 72 mz per liter of water mixed with 2 grams after 15 days after spraying 2 to 3 times.