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Winemaking (rec.crafts.winemaking) Discussion of the process, recipes, tips, techniques and general exchange of lore on the process, methods and history of wine making. Includes traditional grape wines, sparkling wines & champagnes. |
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spit grapes
my cabernet franc vines are doing well, but the bunches on one of my vines
are showing signs of deterioration. I've posted a photo of the grapes at www.africusrex.com/temp can anyone identify the malady? Jeff |
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could it be grape anthracnose?
Jeff "jeff" > wrote in message ... > my cabernet franc vines are doing well, but the bunches on one of my vines > are showing signs of deterioration. > > I've posted a photo of the grapes at www.africusrex.com/temp > > can anyone identify the malady? > > Jeff > |
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Hi....yes I would agree..also known as Birds Eye Rot..I've had this
before ...even this year on a few bunches,although it doesn't seem to be progressing on my vines after hitting them with a captan formulation and then Benomyl....andy j. |
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jeff wrote:
> my cabernet franc vines are doing well, but the bunches on one of my vines > are showing signs of deterioration. > > I've posted a photo of the grapes at www.africusrex.com/temp > > can anyone identify the malady? > > Jeff Jeff, I have noticed the same thing on a very few of my berries. In looking at the "Midwest Small Fruit Pest Management Handbook" published by the Ohio State University Extension I found a picture on page 128 that looks exactly like what you show and what I have observed. The source of the problem is Powdery Mildew. It is interesting that I have not observed the PM on the leaves - just a few berries. Other growers in the area are experiencing a LOT of problems with Powdery Mildew this year. Hope this helps. |
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"Paul E. Lehmann" > wrote in message ... > jeff wrote: > >> my cabernet franc vines are doing well, but the bunches on one of my >> vines >> are showing signs of deterioration. >> >> I've posted a photo of the grapes at www.africusrex.com/temp >> >> can anyone identify the malady? >> >> Jeff > > Jeff, I have noticed the same thing on a very few of my berries. > In looking at the "Midwest Small Fruit Pest Management Handbook" published > by the Ohio State University Extension I found a picture on page 128 that > looks exactly like what you show and what I have observed. The source of > the problem is Powdery Mildew. It is interesting that I have not observed > the PM on the leaves - just a few berries. Other growers in the area are > experiencing a LOT of problems with Powdery Mildew this year. Hope this > helps. Paul, how strange, I am not getting it on the leaves eather. I thought maybe i wasn't getting it at all this year due to extreme heat, etc. this is the first time I've seen no PM on leaves. if you hear of anything else, let me know. thanks Jeff |
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jeff wrote:
> > "Paul E. Lehmann" > wrote in message > ... >> jeff wrote: >> >>> my cabernet franc vines are doing well, but the bunches on one of my >>> vines >>> are showing signs of deterioration. >>> >>> I've posted a photo of the grapes at www.africusrex.com/temp >>> >>> can anyone identify the malady? >>> >>> Jeff >> >> Jeff, I have noticed the same thing on a very few of my berries. >> In looking at the "Midwest Small Fruit Pest Management Handbook" >> published by the Ohio State University Extension I found a picture on >> page 128 that >> looks exactly like what you show and what I have observed. The source of >> the problem is Powdery Mildew. It is interesting that I have not >> observed >> the PM on the leaves - just a few berries. Other growers in the area are >> experiencing a LOT of problems with Powdery Mildew this year. Hope this >> helps. > > Paul, > > how strange, I am not getting it on the leaves eather. I thought maybe i > wasn't getting it at all this year due to extreme heat, etc. this is the > first time I've seen no PM on leaves. if you hear of anything else, let me > know. > > thanks > > Jeff Jeff, I know it is real weird. Another commercial grower less than 10 miles from me is experiencing the very same thing - split berries that look a lot like powdery mildew but no infection on the leaves. Other growers nearby are experiencing powdery on BOTH leaves and berries. I have started spraying with Tenncop which is a copper base fungicide and supposedly is good for both powdery and downy. This has been a good year up to now but now I have doubts about the future of the harvest. BTW - I live in Central Maryland. Here is another link showing pictures of the major grape diseases. Note the picture for Powdery and the split berries. http://lenewa.netsync.net/PUBLIC/IPM/Pest_List.htm Let me know if you find out any more information. Paul |
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"Paul E. Lehmann" > wrote in message ... > jeff wrote: > >> >> "Paul E. Lehmann" > wrote in message >> ... >>> jeff wrote: >>> >>>> my cabernet franc vines are doing well, but the bunches on one of my >>>> vines >>>> are showing signs of deterioration. >>>> >>>> I've posted a photo of the grapes at www.africusrex.com/temp >>>> >>>> can anyone identify the malady? >>>> >>>> Jeff >>> >>> Jeff, I have noticed the same thing on a very few of my berries. >>> In looking at the "Midwest Small Fruit Pest Management Handbook" >>> published by the Ohio State University Extension I found a picture on >>> page 128 that >>> looks exactly like what you show and what I have observed. The source >>> of >>> the problem is Powdery Mildew. It is interesting that I have not >>> observed >>> the PM on the leaves - just a few berries. Other growers in the area >>> are >>> experiencing a LOT of problems with Powdery Mildew this year. Hope this >>> helps. >> >> Paul, >> >> how strange, I am not getting it on the leaves eather. I thought maybe i >> wasn't getting it at all this year due to extreme heat, etc. this is the >> first time I've seen no PM on leaves. if you hear of anything else, let >> me >> know. >> >> thanks >> >> Jeff > > Jeff, I know it is real weird. Another commercial grower less than 10 > miles > from me is experiencing the very same thing - split berries that look a > lot > like powdery mildew but no infection on the leaves. Other growers nearby > are experiencing powdery on BOTH leaves and berries. I have started > spraying with Tenncop which is a copper base fungicide and supposedly is > good for both powdery and downy. This has been a good year up to now but > now I have doubts about the future of the harvest. BTW - I live in > Central > Maryland. > > Here is another link showing pictures of the major grape diseases. Note > the > picture for Powdery and the split berries. > > http://lenewa.netsync.net/PUBLIC/IPM/Pest_List.htm > > Let me know if you find out any more information. > > Paul Paul, I did some browsing and found the following site PM. You may have seen it yourself already in your research, but here is the link: http://ohioline.osu.edu/hyg-fact/3000/3018.html There's a few photos with it as well, similar to what I'm experiencing and the link photos you posted. Jeff |
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