Question: query regarding contrl of blight in tomato. 
Answer: do the ozzo test first. if the test comes ositive then spray and apply strptocyclin/ streptomycin 1 gram/5 liters of water 3 times at 5 days interval in the evening time. or if the test is negative then please apply blitox 50 3 gram per liters of water as same as sterptocyclin.