Everything in my plastic greenhouse is dying!

 


I have a plastic greenhouse containing cucumbers, courgettes and three
types of
tomoatoes; plum, golden and russian black. Everything was
going well until last
week when some of the leaves on my tomoato plants
have started to go get black
spots on them. The spot spreads and then
the leaves die off. This is now
affecting some of the side shoots and
is working it's way up the plant. It seems
to have spread and my
cucmber leaves are starting to die off. I regularly feed
the plants as
the tomatoes now have small fruit on them. I water them once per
day in
the evening but it is very humid in there at the moment. The plants are
in grow bags and I live in the North East of Scotland. I am not sure if
that has
anything to do with it! Any comments would be greatly
appreciated as I will be a
bit gutted if I lose everything!




--
TomatoBecky

 



Without a visual it is difficult to assist you.  Try to ID if it is fungal
or bacterial here.
http://vegetablemdonline.ppath.cornell.edu/diagnostickeys/TomWlt/TomWiltKey.html
or here:
http://aggie-horticulture.tamu.edu/publications/tomatoproblemsolver/leaf/

Once you have a possible ID, these sites should have some info to help you
with a protocol to address your problem.  Regardless of gardening
philosophy, I recommend you get a bit aggressive in addressing this as you
are already playing "catch-up".  I'm sure you know to properly dispose of
the diseased material and do not reuse those grow bags for obvious reasons.

I also have a greenhouse in a cool humid climate,  using both soil and
hydroponics, so I appreciate your challenges.  I recommend you establish  a
solid program of preventative maintenance early on because when you see
these problems,  it is usually too late. There are many products out there,
organic and conventional to use (many separated only by a slight
definition).  I use mostly sulfurs and oils, the occasional copper and
bicarbonates, if necessary, and yes, even the occasional "evil"  chemical
pesticide when necessary.   Do watch using these some of these mineral/oil
products with cucurbits.  A form of Bordeaux mix or a  bicarbonate ( may
also boost your N a bit) as a preventive measure  may help just your green
house.

Please followup here so some of us may know what you found out and how you
address it.

the best to you.

 

On Jul 25, 4:24 pm, TomatoBecky <TomatoBecky.
4e11...@gardenbanter.co.uk> wrote:

Hello...im new here so i was wondering what this group is
about? ....hang in there tomatobecky...i hope it'll work out.
Thanks!

 


Thanks very much for your replies. I really apprecaite it. I have cut
off the
diseased leaves and shoots but I think I am going to have to
take more drastic
measures!

All of the suggestions have been really helpful!




--
TomatoBecky

 

On Sat, 25 Jul 2009 15:29:53 -0700, Billy wrote:


Try powdered sulfur. Humidity equals mold, got a fan in the greenhouse to
exchange the air?
--
Bud