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Produce => Edible Plants => Topic started by: angle shades on April 30, 2009, 19:55:20

Title: onion white rot
Post by: angle shades on April 30, 2009, 19:55:20
 >:( I have it already >:( >:( >:( >:(/ shades x
Title: Re: onion white rot
Post by: Tee Gee on April 30, 2009, 21:14:45
On what ??? Japanese onions perhaps. ?

I guess your soil must have been contaminated from a previous crop but I am very surprised that it has manifested itself so early in the season.

What size is the bulb?

Any chance of a picture or two?

White rot; http://www.thegardenersalmanac.co.uk/Data/Onion%20White%20rot/Onion%20white%20rot.htm (http://www.thegardenersalmanac.co.uk/Data/Onion%20White%20rot/Onion%20white%20rot.htm)

Click on the pictures to enlarge
Title: Re: onion white rot
Post by: angle shades on April 30, 2009, 21:59:49
yes Tee Gee on my Japanese onions  :( Radar

the odd thing is, I have one block of Jap onions which are showing all the signs of white rot and come straight out the ground ,then I have a block of spinach and then another block of Jap onions and they haven't got white rot!! but are all in the same bed, its as if the spinach has stopped the second block of onions getting the rot, but that's impossible isn't it ?.

the bulbs are small/ medium, no photos at the mo, but you are right its early for white rot/ shades x
Title: Re: onion white rot
Post by: redimp on April 30, 2009, 22:08:38
Do you already have it in the soil?  Or was it imported with the sets?  I have some radar in from the shed on your site :o

I have read that the sulphurs leached into the soil from brassicas can slow the progress of white rot.  Don't know about beets.  I seem to have a little bit every year on my plot but it only ever effects the odd bulb.  I always put my onions/garlic where I had long standing brassicas (sprouts or PSB) the previous year.
Title: Re: onion white rot
Post by: angle shades on April 30, 2009, 22:21:42
I will ask around RC and see if anyone else has it with radar sets from the hut,

interesting about the sulphur/brassicas  / shadesx
Title: Re: onion white rot
Post by: Barnowl on May 01, 2009, 09:56:26
Although it might not work since it's 'only a soap', have you thought of trying Armillatox? Check out the international site for it www.armillatox.com
Title: Re: onion white rot
Post by: Vortex on May 01, 2009, 19:30:15
Armillatox is not "soap" - it's only allowed to be sold in the EEC as a "cleaning agent". It works really well against white rot but MUST be applied 3 weeks prior to planting at 1:100 dilution 1 gallon per metre square
Title: Re: onion white rot
Post by: realfood on May 01, 2009, 20:04:26
I have a trial of Armillatox against whiterot ongoing at the moment. Half the alliums bed is treated and half not, so it will be interesting to see if there are any differences at the end of this season.
Title: Re: onion white rot
Post by: angle shades on May 05, 2009, 08:41:30
 :) thanks for your replies, I've pulled up the onions one side of the spinach, it wasn't hard they had really rotted,

the onions the otherside of the spinach are fantastic, so the spinach has protected them some how :-\/ shades x