Tomato Blight - Using Bordeaux Mixture / Feeding

[Farmer_Gyles]

When I've had blight in the past, it's always been at the end of the season after I've had a good crop, so never used bordeaux mixture before.

Do I use the bordeaux mixture by spraying leaves using a squirty spray bottle, or by watering can?
The tub says to use every 3 weeks. Correct? Or better to use more often?
Do I feed the tomatoes as normal?
Do I need to try and keep leaves dry? (out of the rain / water low down into the pots to avoid watering the leaves?)
Anything else I should do? I have already removed most of the leaves from each plant and definitely everything low down ....

[Alison]

It's not something I'm happy using but I always thought that it was preventative rather than a cure so if you've already got blight then it's too late to use but other people might know better.

[Farmer_Gyles]

apparently BM can slow down the blight so we still get a crop .... it would be nice to get one ripe tomato from our 60 plants ....

and blight has hit a couple of potatoes now too ....

[taff]

squirty spray bottle, re-do every few weeks, try and keep them dry, the reason you re-do is that it gets washed off in rain [or at leats mine did 3 years ago...or was it last year? dunno....]

feed as normal.
throw away any you dont use at once, dont keep it hanging round, and watch your mixing quantities, its a bit of a bugger to get right.

[Farmer_Gyles]

cheers taff .... the toms are all outside, so unlikely they'll stay dry .... do i respray after the heavens have opened?

[taff]

yup. but not too much. maybe once every 3 weeks or unless it has completely washed off. It's not good for your soil to add so much stuff to it, so keep it to a minimum.