Re: Onion White rot

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MoreWhisky

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Re: Onion White rot
« on: May 29, 2010, 14:11 »
Im very intrested for  ;) 'research'  ;)about using jayes fluid on onion bed aganst white rot, from anybody has done this in the PAST , are we allowed to discuss this subject this way?   
I'm very important. I have many leather-bound books and my apartment smells of rich mahogany.

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Aunt Sally

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Re: Onion White rot
« Reply #1 on: May 29, 2010, 14:21 »
No, we are not allowed to discuss that.

On the other hand I have read that watering the griund with garlic extract the year before you want to grow alliums on it will trick the white rot fungus into germinating.  It can't find any alliums to grow on so dies and is not there to infect your crop next year.  Sounds better than murdering all the worms and other helpful soil organisms to me.

I'll look for a link for you.

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Irene

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Re: Onion White rot
« Reply #2 on: May 29, 2010, 14:35 »
I found this article this morning very informative regarding White Rot-garlic, etc..

http://www.dgsgardening.btinternet.co.uk/whiterot.htm

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MoreWhisky

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Re: Onion White rot
« Reply #3 on: May 29, 2010, 15:10 »
Ive just looked on Robinsons mammonth vegtable seeds web site and this is what is says about it;

'White rot is perhaps the most serious of the problems as there is no chemical control available. The infected onions must be lifted and destroyed. Remove the soil that the onion was growing in. Do not store or re-use this soil but dispose of it. The ground can then be given a thorough cleaning by using a soil sterilant.'

So does anbody know of a legal soil sterilant?

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Yorkie

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Re: Onion White rot
« Reply #4 on: May 29, 2010, 16:52 »
I think it was Robinson's website we've had problems with before.  They were overtly recommending the use of a chemical banned for a couple of years.  I emailed them and got a response that wasn't worth the paper it wasn't written on.

I'm not aware of any permitted soil sterilisants, except for boiling water perhaps.  And I don't know how effective that will be.  And of course you are killing off all the good bugs as well as anything bad.
I try to take one day at a time, but sometimes several days all attack me at once...

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Paul Plots

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Re: Onion White rot
« Reply #5 on: May 29, 2010, 17:02 »
White rot = do not grow onions on that spot.

Try raised beds with newly imported soil.

Maddening I know but safer and more successful.
Never keep your wish-bone where your back-bone ought to be.

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Aunt Sally

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Re: Onion White rot
« Reply #6 on: May 29, 2010, 18:34 »
Thanks for that link realfood.  It's the one I've been trying to find. :)

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MoreWhisky

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Re: Onion White rot
« Reply #7 on: May 30, 2010, 01:19 »
Ive read about this idea/method a few times  on various threads. So have we anybody who has had a positive result using this method?

Im going to have to try something or stop growing alliums i think  :(

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Paul Plots

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Re: Onion White rot
« Reply #8 on: May 30, 2010, 07:58 »
Ive read about this idea/method a few times  on various threads. So have we anybody who has had a positive result using this method?

Im going to have to try something or stop growing alliums i think  :(

I'm holding off giving up altogether.... still have an area that has not produced white-rot results but more by chance than judgement and how long for I'm not sure.  :(

It would be interesting, as you say, to hear how others have got on....  (raised-beds?)

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SG6

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Re: Onion White rot
« Reply #9 on: May 30, 2010, 08:37 »
Presently no fix for white rot, although have a search and one or two universities are researching in to it, would make interesting reading if I understood what they meant in layman terms.

There are onion varieties that claim resistance, but resistance isn't immunity.

Mammoth seeds have a variety called Golden Bear of which they say:
Early maturing globe shaped with vigerous growth. Heavy yeilding. Highly tolerant to Downy Mildew and Botrytis. Resistant to White Rot.
50seeds £2.10

Again: Resistance isn't immunity

Sure I have read of another variety, as I seem to recall a different name mentioned.

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Yorkie

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Re: Onion White rot
« Reply #10 on: May 30, 2010, 09:05 »
Are you sure it's white rot?

Are there other fungal diseases which can attack onions?  We've had a couple of spud posts this year where people have automatically assumed the problem to be blight when it was frost; could a similar assumption be made here?

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BADBACK

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Re: Onion White rot
« Reply #11 on: May 30, 2010, 09:21 »
EYUP
good morning everybody,
i had white rot last year in one area of the plot
went on loads of web sites and wow they all paint a
dark picture of it
no chemicals will eradicate it
so up to the lotti with my wall paper steamer
gave the area a good going over and touch wood
no sign of it as yet

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Paul Plots

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Re: Onion White rot
« Reply #12 on: May 30, 2010, 17:13 »
When sowing parsley seeds outside 1st make a drill and drench it with boiling water then sow the seeds...

Would it work with onions too do you think or would you simply end up with a very warm seed bed and quickly awakened white-rot spores?

(Rather hot worms I guess  :tongue2: )

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Yorkie

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Re: Onion White rot
« Reply #13 on: May 30, 2010, 17:15 »
Doubt that would work with white rot as the fungal spores I believe are soil-borne so can travel laterally through the soil with water movements - thus although the immediate area might be sterile on planting, the spores will probably reinvade ...

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Paul Plots

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Re: Onion White rot
« Reply #14 on: May 30, 2010, 17:20 »
Doubt that would work with white rot as the fungal spores I believe are soil-borne so can travel laterally through the soil with water movements - thus although the immediate area might be sterile on planting, the spores will probably reinvade ...

Rot!

I thought that sounded far too easy..  :(



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