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nafex - Re: [NAFEX] peach leaf curl/resistance

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  • From: "Lon J. Rombough" <lonrom@hevanet.com>
  • To: North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] peach leaf curl/resistance
  • Date: Mon, 4 Jun 2007 07:39:07 -0700

Here in Oregon, there is a small nursery that has collected a good number of peaches with resistance to peach curl. Todd Wilson twilson@speedpal.com has at least a half dozen varieties, if not more. This would probably be a good time to contact him to arrange trees for next year so he can propagate extras this season.
-Lon Rombough
Grapes, writing, consulting, my book, The Grape Grower, at http://www.bunchgrapes.com Winner of the Garden Writers Association "Best Talent in Writing" award for 2003.
For even more grape lessons, go to http://www.grapeschool.com
For growing supplies and more; http://www.grapegrowersolutions.com

On Jun 4, 2007, at 7:29 AM, Jim Cooper wrote:

We started growing peaches about 10 years ago. We knew nothing and when we asked others often were given so so advise. The label says that lime sulfur works to control peach leaf curl. But it does not say to Stop it.

After a few years of ongoing problems I asked again and again to different places and found an older person who said use "Tri Copper sulfate". It comes in a two part package, powder copper and a sticker M to use also. This is necessary to finally get it past control and stopped, nearly. We still have a branch or two that will have problems but not the whole tree, I probably missed it. Now that they are leafed out it is too late for this year. This is a dormant spray, and do this 2-3 times each winter. I spray soon after leaf fall, again the first of the year, and then again when buds are swelling.

Another nursery man said to use something with Zinc in it because someone he knows who has little or no problem with curl uses it. It is not on the label for peach leaf curl! He suggested to use it for the last spray.

Yes there are several resistant varieties maybe at http://www.raintreenursery.com/how_to/PEAC.html




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