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#1
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Blisters on Peach and Nectarine trees
Hi,
I planted a peach 'Peregrine' and a nectarine 'Lord Napier' tree in Spring 2002. All through 2002 I didn't get a single leaf. This year, the trees are covered in leaves and seem to be growing well. However in the last couple of weeks I have noticed bright red "blisters" appearing on the leaves of the trees. All the blossom was killed in our late severe frosts. Does anyone know what caused the red blisters? Will the trees live? -- Mark Allison, SQL Server MVP http://www.allisonmitchell.com ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- |
#2
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Blisters on Peach and Nectarine trees
Mark Allison wrote in message ... Hi, I planted a peach 'Peregrine' and a nectarine 'Lord Napier' tree in Spring 2002. All through 2002 I didn't get a single leaf. This year, the trees are covered in leaves and seem to be growing well. However in the last couple of weeks I have noticed bright red "blisters" appearing on the leaves of the trees. All the blossom was killed in our late severe frosts. Does anyone know what caused the red blisters? Will the trees live? -- It's Peach Leaf Curl, a fungal disease. It is spread by spores that live in the soil during winter and are 'splashed' onto the leaves in rain. It will not do a lot of harm, the leaves usually drop off and can then be collected and burnt, or you could pick them off. Protecting the tree in Spring with a fleece cover is supposed to help. I have noticed that mine has much less of the disease this year, but have no idea why. It won't stop it fruiting, and later leaves are always OK. Mike www.british-naturism.org.uk |
#3
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Blisters on Peach and Nectarine trees
On 04 Jun 2003, "Michael Berridge" wrote
the following pearl of wisdom: It's Peach Leaf Curl, a fungal disease. It is spread by spores that live in the soil during winter and are 'splashed' onto the leaves in rain. It will not do a lot of harm, the leaves usually drop off and can then be collected and burnt, or you could pick them off. Protecting the tree in Spring with a fleece cover is supposed to help. I have noticed that mine has much less of the disease this year, but have no idea why. It won't stop it fruiting, and later leaves are always OK. Thanks Mike - shall I remove the leaves with red bits on now then? There seems to be quite a lot (perhaps 20%) of the leaves that have gone red. -- Mark Allison, SQL Server MVP http://www.allisonmitchell.com ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- |
#4
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Blisters on Peach and Nectarine trees
"Michael Berridge" wrote in message ...
Mark Allison wrote in message ... Hi, I planted a peach 'Peregrine' and a nectarine 'Lord Napier' tree in Spring 2002. All through 2002 I didn't get a single leaf. This year, the trees are covered in leaves and seem to be growing well. However in the last couple of weeks I have noticed bright red "blisters" appearing on the leaves of the trees. All the blossom was killed in our late severe frosts. Does anyone know what caused the red blisters? Will the trees live? -- It's Peach Leaf Curl, a fungal disease. It is spread by spores that live in the soil during winter and are 'splashed' onto the leaves in rain. It will not do a lot of harm, the leaves usually drop off and can then be collected and burnt, or you could pick them off. Protecting the tree in Spring with a fleece cover is supposed to help. I have noticed that mine has much less of the disease this year, but have no idea why. It won't stop it fruiting, and later leaves are always OK. Mike www.british-naturism.org.uk I've read that it is best treated as it can weaken or kill the tree |
#5
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Blisters on Peach and Nectarine trees
"David" wrote in message om... Protecting the tree in Spring with a fleece cover is supposed to help. Not quite right.... protecting from the rain in winter/early spring to prevent spores being washed into the buds is the method you are thinking about. Only really practicable on an ultra dwarf of fan trained specimens From the RHS; (A good general tip BTW is a google search for [disease name or problem, RHS advice] that will normally bring the RHS relevant advise to the top of the search results.... as shown by the following) Symptoms In early spring young leaves are swollen and distorted, and appear to have large blisters coloured whitish green, red or pink. As they mature the leaves become covered in a white, powdery bloom. The leaves often fall in large numbers leaving the tree virtually bare, although a second flush of healthy foliage will appear. Occasionally, fruits may be covered in blistered patches. Plants affected Peaches, nectarines, almonds and apricots. Cause Peach leaf curl is a fungal disease, which, if left untreated, puts trees under severe stress due to the excessive leaf loss. The white bloom is the mass of fungal spores, but these do not infect the new leaves produced later in the year. Non-chemical control Collect and dispose of infected leaves before the bloom of spores appears is useful because it limits the number of spores overwintering on the plant. Erect a polythene or glass structure to cover the top and front of the tree between January and mid-May. Trees so sheltered from rain and dew show only very mild symptoms in comparison with unprotected trees. Ensure the sides are left open so that pollinating insects can enter. You should also carry out hand pollination. If a tree suffers leaf loss, boost its vigour with an application of fertilizer and make sure it is kept well watered and mulched. Chemical control pk |
#6
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Blisters on Peach and Nectarine trees
Mark Allison wrote in message ... Thanks Mike - shall I remove the leaves with red bits on now then? There seems to be quite a lot (perhaps 20%) of the leaves that have gone red. -- I just pick off those I can see everytime I go past the tree, new leaves will develop and be fee from disease. Mike www.british-naturism.org.uk |
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