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Author Topic: Broad bean leaves turning black?!  (Read 3536 times)

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Hampshire Hog

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  • Location: North Hampshire
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Broad bean leaves turning black?!
« on: January 20, 2008, 12:24 »
Just checked my Broad beans at allotment and some of them have leaves turning grey/black.  :shock: (They also had a few holes with the culprit attached - sorry pellets for him and his pals.) Any thoughts on cause of disease/ virus I thought broad beans were only troubled by black fly and they're not around. I have a plastic barrier close to the plants to reduce blast from wind coming across plot.  

Welcome any ideas not seen it before :?

Cheers HH
Keep digging


WG.

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Broad bean leaves turning black?!
« Reply #1 on: January 20, 2008, 12:26 »
blast from reduced winds coming across plot perhaps?

splodger

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Broad bean leaves turning black?!
« Reply #2 on: January 20, 2008, 13:15 »
broad beans can get choclate spot - especially after severe weather - and normally due to a potash deficiency.

bordeaux mixture might help  :wink:

beans are also suceptible to foot / root rot as well as grey mould - with all the wet weather - and if your soil is not well draining - might be the cause

WG.

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Broad bean leaves turning black?!
« Reply #3 on: January 20, 2008, 13:19 »
Even at this time of year?  I thought a fungus would only attack when the weather warmed up; I've never been able to over-winter broad beans to advise.

gobs

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Broad bean leaves turning black?!
« Reply #4 on: January 20, 2008, 13:21 »
I don't know what temperature they need, but it's very mild here, Wiggy.


A few of my BB are in bud. :oops:  :oops:
"Words... I know exactly what words I'm wanting to say, but somehow or other they is always getting squiff-squiddled around." R Dahl

Aidy

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Broad bean leaves turning black?!
« Reply #5 on: January 20, 2008, 13:26 »
I would put my money on Wg's first post, wind scorch, the wind chill at night is cutting and if they are in the open I reckon its that. I really cant see it being mould if they are outside it might seem mild but you stand there all day and night with nowt on.  :shock:
Punk isn't dead...it's underground where it belongs. If it comes to the surface it's no longer punk...it's Green Day!


Hampshire Hog

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  • Location: North Hampshire
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Broad bean leaves turning black?!
« Reply #6 on: January 20, 2008, 14:05 »
Thanks everyone I think it could be grey mould it is 13 degrees C here at present which is very warm for time of year. Think I will remove affected plants and move wind break to lower humidity.

Cheers HH

WG.

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Broad bean leaves turning black?!
« Reply #7 on: January 20, 2008, 14:07 »
How about a piccie please?

Even weeds have got brown patches on the leaves in winter - their main goal is only to survive.

gobs

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Broad bean leaves turning black?!
« Reply #8 on: January 20, 2008, 16:01 »
I checked me fact sheets out about this. Chocolote spot and grey mould are more common on autumn sown beans, starting to be prevalent from mid- winter. And they commonly follow each other, it says.

But the description 'black' I still find confusing.



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