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Old 29-06-2007, 10:44 PM posted to uk.rec.gardening
Robert \(Plymouth\) Robert \(Plymouth\) is offline
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First recorded activity by GardenBanter: Feb 2007
Posts: 98
Default Potato blight - degree of urgency?


"shazzbat" wrote in message
...
:
: "Robert (Plymouth)" wrote in message
: ...
:
: " wrote in
message
: oups.com...
: : On Jun 28, 6:34 pm, "Bob Hobden" wrote:
: :
: : My understanding is that you need to get the blighted tops off asap
: before
: : it's carried down to the tubers. You can then leave the tubers in
the
: ground
: : for a couple of weeks.
: :
: : Bob, is there something else that can be sprayed on which will stop it
: : developing? I'm sure my Dad used to spray his with something???
: :
: : Judith
:
: What Bob says about removing the tops is of course correct and that
stops
: the blight getting to the tubers. Preferably you want to dig the
remaining
: tubers on a hot dry day, yes well !!
:
: You can spray with dithane or apply Bordeaux mixture as a preventative
: measure but I have never found it to be successful. I have stopped
growing
: outdoor tomatoes and am growing Thompson and Morgan blight resistant
: potato
: varieties and hoping that they stand up to this summer's weather, which
: must
: be the ultimate test.
:
:
: After reading the posts in this thread and after googling images I went to
: the allotment today. We have Rocket 1st earlies(not many left anyway),
then
: Kestrel, then Romano.
:
: All blighted :-((
:
: I took off the foliage of all of them, and dug up the remaining Rocket and
: the Romano, since they looked the worst affected, and got about 10% of
: normal yield. Plenty spuds, but small.
:
: I'll have the Kestrel up tomorrow, weather permitting, which it probably
: won't.
:
: So how long do the spores stick around, do I now have to refrain from
: growing spuds for X No of years?
:
: Steve
:
As long as you remove all debris the blight is unlikely to persist into next
year as it is airborne