Allotment Gardening Advice Help Chat

Growing => Grow Your Own => Topic started by: Beetroot queen on June 08, 2009, 10:12

Title: black leaves on broad beans
Post by: Beetroot queen on June 08, 2009, 10:12
we have been treating the broad beans for black fly by spraying with soapy water. today I noticed some leaves have black spots, almost looks like they have been splashed with creosote. (SP) is this black fly damage or the soapy water that has caused it, and will it affect the crop, the pods growing all look clear  :wacko:
Title: Re: black leaves on broad beans
Post by: Ice on June 08, 2009, 10:17
Are the spots black or brown?  If brown it might be chocolate spot.
Title: Re: black leaves on broad beans
Post by: Beetroot queen on June 08, 2009, 10:22
well thats a hard one, in one light they look very very dark brown in another black, I will try and upload a pic  ???
Title: Re: black leaves on broad beans
Post by: Beetroot queen on June 08, 2009, 10:30
(http://i152.photobucket.com/albums/s184/judey_wooo/IMG00235-1.jpg)

(http://i152.photobucket.com/albums/s184/judey_wooo/IMG00236-1.jpg)

Not sure if you can work it out from that pic  :unsure:
Title: Re: black leaves on broad beans
Post by: Ice on June 08, 2009, 12:23
It does look like chocolate spot.  Wait and see if anyone else has a different opinion.
Title: Re: black leaves on broad beans
Post by: Gardeningguru on June 08, 2009, 13:15
It does look like chocolate spot.  Wait and see if anyone else has a different opinion.


I would agree, I have that same problem on one or two of my plants.
Title: Re: black leaves on broad beans
Post by: Beetroot queen on June 08, 2009, 13:31
It only appeared over night is that normal, we left the plot at 5pm yesterday and it was fine  :blink:

off to google, thanks for the help  :D
Title: Re: black leaves on broad beans
Post by: Gardeningguru on June 08, 2009, 15:45
It only appeared over night is that normal, we left the plot at 5pm yesterday and it was fine  :blink:

off to google, thanks for the help  :D

Yes, its a fungal type ailment (for want of a better word).  I wouldn't worry it doesn't seem to spread feriouscly fast.  I have had one or two plants with it, and it hasn't spread.

If you notice on some of your other leaves in the picture, you will see it as small spots.  Generally gets worse in wet weather, an becomes large blotches ultimately killing the leaves, and/or stems.  A nice hot dry spell will stop it in its tracks (limit damage).