[davethespread]

Dithane has been reformulated, but now contains copper the same as bordeaux mixture....which is under review.
Bet your life we'll lose them both .............and have nothing left to use

thats why they are doing the GM tests mum

[mumofstig]

Still wouldn't want to eat GM ones 

[Sid]

Full Smiths Period PL24 PL25 PL26
Don't know wheather I should Bordeaux mix tomorrow..
My potatoes are all looking wounderful it would be so sad to lose them
I think I will have to .

[davethespread]

so do we just not wait and see if it appears before we spray? honestly i dont know im a bit of a rookie only my second year

[PennyS]

But I can't/won't spray anyway as not allowed - I'm on an organic site.
I need to do some research about whether there is any organic solution - I suspect there isn't 

I thought organic gardeners could use Bordeaux mixture ?

I've no idea - I've never looked in to it.   Have only grown potatoes in small quantities at home and have never had blight problems.  It's a whole new world for me    Must do some research!!

[MoreWhisky]

Well i sprayed Dithane on my Maris and Pink fir apples today , i also used whats left on my Tomatoes.

[rhysdad]

Full smith period TN10 and surrounding areas. No dithane here, just crossed fingers!!

[DD.]

so do we just not wait and see if it appears before we spray? honestly i dont know im a bit of a rookie only my second year

Spray is not a cure, it's a preventative measure.

At the moment with only one unconfirmed outbreak in the north of Scotland, I see no reason to start panicing.

[Solidthegreat]

Oh no, Just got a Blight warning today, full smiths period all around me. First year ever growing something and now this. What do i do now? 

BlightWatch Alerts:
for more detail please visit www.blightwatch.co.uk

Area: OX16 Warning: Full Smith Period
Area: OX10 Warning: Full Smith Period    
Area: OX11 Warning: Full Smith Period
Area: OX12 Warning: Near Miss Period    
Area: OX15 Warning: Full Smith Period
Area: OX17 Warning: Full Smith Period
Area: OX7   Warning: Full Smith Period    
Area: OX9   Warning: Full Smith Period

[Aunt Sally]

You don't have to do anything yet.

Keep an eye on where the outbreaks are around the country.

[DD.]

This is the most important thing to keep an eye on:

Blight Map

When it starts to fill up with red dots, especially big ones - that's the time to start panicing!

[Solidthegreat]

Phew, Thanks. But if i does happen what do i do then? I have read all sorts about spraying them with different chemicals, but can anyone tell me what they do, contain or the risk to humans. Dont want to poison my wife as she is expecting. Would like to just say though how great ths forum is and how considerate and helpful everyone is on here. In a world that is full of hate and sorrow, its nice to get a breath of fresh air with such nice people .

[MoreWhisky]

So shouldn i have sprayed then? i thought a full smiths period warning out comes the dithane?

[Salmo]

*** crops must not be harvested for 7 days after application. That means that it is probably not practical to spray earlies.

I wonder if that just applies to crops that Dithane actually comes into contact with, such as tomatoes? Dithane is in effect an anti fungal surface dressing that won't come into contact with the spuds themselves.

Don't get me wrong here - I'd err on the side of caution.

The instructions on the box says
Potatoes (blight) 7 day harvest interval
Tomatoes (blight) 7 days harvest interval for outdoor and 2 days for protected.
Lettuce (downy mildew) 7 days harvest interval for outdoor and 3 weeks for protected.

Not sure I understand the logic of indoor and outdoor difference for lettuce and tomatoes.

I saw a bit on the news about blight resistant genes being introduced from South American strains of potato. That is totally different in my book to introducing genes from unrelated crops. It probably means that the scientists can introduce blight resistance relatively quickly which would take normal plant breeding techniques 20 years to achieve.

[DD.]

The suspected case in this thread:

http://chat.allotment-garden.org/index.php?topic=58591.0

has been confirmed as positive in a small patch.