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whats happened there is it the dreaded blight or wind damage
Oooh dear Tim!
Whats happened?
OB :o
Had a google for "crispy ends on tomato plants" and the internet thinks it could be something called Fertilizer Burn.
Mind you, a little google can be a dangerous thing ....
Cut the dead bits off and hope from the best, but give the Tomorite a rest for a week or two. Plant should recover.