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yellow leaves on potatoes


 
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heno55
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 13 Jun 2010
Posts: 49
Location: The White Country

PostPosted: Sat May 28, 2011 11:59 am    Post subject: yellow leaves on potatoes Reply with quote

hi i have noticed that some of my potatoes have developed yellow edges see attached photos normally i would associate this with some kind of mineral deficiancy but these are the only ones to show this colouring they are "Peaches Bloom" and they are in the same bed as sarpo mira, international kidney and roosters none of which show the same colouring, has anyone come across this before


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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
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Location: cork

PostPosted: Sat May 28, 2011 8:46 pm    Post subject: Reply with quote

Not a mineral deficiency but is probably a virus. Don't be alarmed however as some viruses can be present and be harmless or have very little effect on the cropping potential. Aphids can spread the virus from stalk to stalk and the virus may manifest itself in different ways in different varieties.
michael brenock horticultural advisor (retired)
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heno55
Rank attained: Hazel Tree
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PostPosted: Sun May 29, 2011 12:38 pm    Post subject: Reply with quote

thanks for clearing that up michael, is the virus likley to be variety specific or can i expect it to spread to the other potatoes and if so is there anyway to prevent or slow down the spread by non chemical means.i would also like to thank you for pointing me in the direction of "Grower Guide No6 Strawberries Under Protection" it was most helpful when i managed to scource a copy which was very hard to come by but i found in a charity shop online.it might be an old book but good practice and advice never goes out of date
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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
Posts: 1275
Location: cork

PostPosted: Sun May 29, 2011 8:55 pm    Post subject: Reply with quote

heno55: the virus is usually spread by aphids. ignore the virus but do not save seed from any of the crop for the coming year if the tubers show any signs of deterioration or poor cropping. Glad to hear you got a copy of the grower guide to strawberries. Those grower guides were invaluable in their day and are still valuable.
michael brenock horticultural advisor (retired)
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