NFU Mutual Smallholding Insurance

Author Topic: Tuber blight?  (Read 295 times)

Briggsy from Gower

  • Joined Nov 2018
Tuber blight?
« on: November 21, 2018, 05:45:09 pm »
Hi Guys,

I have been growing spuds for years with no problems at all (well if you discount slugs and mice).

It was only when I started sowing blight resistant varieties that my problems started!

The first variety turned out to be blight 'tolerant', rather than resistant. For the first time I suffered from blight of the foliage. The plants grew on quite cheerfully regardless, however as I was also aiming for a large tomato crop I though it too risky to let them stay so harvested early.

This year I chose a blight resistant variety, the plants grew well with no signs of disease, however  me spuds in storage are rotting from the inside out. They are not mushy, but a strange rusty colour spreads throughout the whole spud.

Does this sound like tuber blight, or do I have something else sinister going on?

Anyone have any ideas?
Voss Electric Fence

Zyg

  • Joined Nov 2018
Re: Tuber blight?
« Reply #1 on: November 21, 2018, 08:49:19 pm »
I have that in some varieties of spud and not others even though they were all grown in close proximity to each other. I just put it down to blight. I suppose that since it is in the tuber, the term tuber blight fits. 
I also had some blight in my toms but not too devastating.

PK

  • Joined Mar 2015
  • West Suffolk
    • Notes from a Suffolk Smallholding
Re: Tuber blight?
« Reply #2 on: November 21, 2018, 08:53:14 pm »
There is a disorder of potatoes that results in internal browning which can be due to a period of sudden rapid growth. The tuber cells can cope with this and the cell wall break down. Did you have a lot of rain after a period of drought this summer? This is often accompanied by the potatoes hollowing out as a consequence.
« Last Edit: November 21, 2018, 08:54:51 pm by PK »

Briggsy from Gower

  • Joined Nov 2018
Re: Tuber blight?
« Reply #3 on: November 22, 2018, 09:45:35 am »
Hmm, quite possibly,

We would have watered heavily when we watered this year, the rest of the time as you know was draught.

I'll take a photo when I get a chance.


Terry T

  • Joined Sep 2014
  • Norfolk
Re: Tuber blight?
« Reply #4 on: November 22, 2018, 10:04:40 am »
The symptoms don’ t sound like blight which damages from the outside in.

Anke

  • Joined Dec 2009
  • St Boswells, Scottish Borders
Re: Tuber blight?
« Reply #5 on: November 22, 2018, 03:30:08 pm »
Are they hollow inside and then rot? I have found that quite a few of shop-bought potatoes (our homegrown are long finished) have what may be "spraing", according to Mr Hessayon.

cloddopper

  • Joined Jun 2013
  • South Wales .Carmarthenshire. SA18
Re: Tuber blight?
« Reply #6 on: November 29, 2018, 10:29:46 pm »
See if it is shown in this pictorial link

https://potatoes.ahdb.org.uk/gallery/potato-diseases
Strong belief , triggers the mind to find the way ... Dyslexia just makes it that bit more amusing & interesting

Briggsy from Gower

  • Joined Nov 2018
Re: Tuber blight?
« Reply #7 on: December 03, 2018, 07:10:57 pm »
Thanks,

No it does not resemble any of those.

I am beginning to think it may be too rapid growth as suggested above.

Mr Briggsy was very heavy handed with the watering due to the draught conditions, so possibly this one is an own goal.

I have decided to just do a small number of spuds in the polytunnel next year and try the outside plot again in a couple of years.

Thanks all for your comments.

cloddopper

  • Joined Jun 2013
  • South Wales .Carmarthenshire. SA18
Re: Tuber blight?
« Reply #8 on: December 07, 2018, 12:52:48 am »
Blight tends to arise when there is prolonged high humidity & still air  .
Crowded potatos & tomatoes  both suffer from it tremendously .

 Lifting spuds …..  if the tops are showing blight yellowing etc  it usually means the tubers  will be lighted in storage . So does cutting the tops that are blighted  raking them off and then lifiting the spuds.  I gather it is the blight spore entering the potatoes via the tuba stems & greenery .

 In East Anglia my farmer friends used a dilute sulphuric acid spray to kill off the  green / dying potato tops.  Leaving  them in the ground for three  weeks or so , till the tops were dessicated and a good dried potato top brown before lifting their potatoes for storage.

 You can spray the tops and your toms with copper based anti blight spray  ..if you do make sure you adhere to the withdrawal periods  .
 Make sure when you plant your spuds  especially here in South Wales where there is quite a high annual rainfall to plant them a good 30 inches or more apart to try and prevent the blight occuring .
 Blight spore natural & are all over the place in Wales as well .

Look for blight resistant Scotch seed potatoes ..  the area up in Scotland that they are grown in is not so wet as down here
Strong belief , triggers the mind to find the way ... Dyslexia just makes it that bit more amusing & interesting

 

blight NOW?

Started by northfifeduckling

Replies: 5
Views: 1778
Last post June 30, 2011, 12:34:38 pm
by The Beak
Potato Blight

Started by Jayhawk

Replies: 3
Views: 3167
Last post September 14, 2008, 09:55:58 pm
by katelock
potato blight?

Started by Lizt

Replies: 4
Views: 1783
Last post June 16, 2009, 09:01:01 pm
by Fluffywelshsheep
sudden blight

Started by northfifeduckling

Replies: 9
Views: 2863
Last post July 18, 2009, 11:05:47 pm
by northfifeduckling
Potato blight

Started by knightquest

Replies: 1
Views: 1166
Last post October 09, 2010, 11:50:19 pm
by Fleecewife

Forum sponsors

FibreHut Assist Animal Care Services Thomson & Morgan Time for Paws Scottish Smallholder & Grower Festival Little Peckers

© The Accidental Smallholder Ltd 2003-2018. All rights reserved.

Design by Furness Internet

Site developed by Champion IS