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  • From: "Brungardt, Sam" <Sam.Brungardt@state.mn.us>
  • To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Brown rot-resistant plums
  • Date: Wed, 31 Dec 2008 15:23:22 -0600

Title: RE: [NAFEX] Brown rot-resistant plums

Mark, having just obtained the electronic version of Plums of North America, I searched its cultivar database for brown rot resistance and found the following info.  In addition there was info on many cultivars that are very susceptible to brown rot, but I have not included it here. -- Sam

Very resistant:
Raribank

Unusually free of brown rot:
Grand Duke

Very good resistance:
Lantz
Olean

Good resistance:
Opal

Resistant:
Crimson

Comparatively free of brown rot:
Milton
Wild Goose

Little or no brown rot:
Tecumseh

Comparatively immune:
Red June

Some resistance:
AU Roadside
Gracious

Tolerant:
AU Rosa
AU Rubrum
Rivers Delight
Waneta

Above-average tolerance:
Kenmore Plum

Few problems with brown rot:
Burbank Stoneless Plum
Rollingstone
Superior

Brown rot has not been a problem:
Jam Session

Moderately susceptible to brown rot:
Mount Royal

Other:
Golden Drop (Coe's Golden Drop): not as susceptible to brown rot as Golden Egg
Kaga: not as much problem with brown rot as Tonka
Morris: more resistant to brown rot than Methley
Pottawattamie: escapes brown rot more than most of its kind
French Petite: no info
Stanley: very susceptible to brown rot; must be sprayed in humid areas

Also, peaches least susceptible to brown rot (from research at Kearneyville, West Virginia):
Elberta
Glohaven
Babygold No. 5


-----Original Message-----
From: nafex-bounces@lists.ibiblio.org [mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of Mark Angermayer
Sent: Tuesday, December 30, 2008 9:27 PM
To: North American Fruit Explorers
Subject: [NAFEX] Plum thoughts please

Hi Folks,

One of my in-laws wants to plant some plums and needs some advice.  The situation is that the plums will be low-spray, or possibly no spray at all. I've seen the site and believe the disease pressure will be very low.  It is in the downtown of a city of 30,000.  Lots of concrete, and, as as far as I could tell, very few fruit trees around.  So I'm hopeful he can raise some plums without too much trouble from insects.  Without looking it up, I

believe the area only gets 30-35 inches of rain per year.   Zone 6.

I want to recommend some high quality cultivars, but they need to have some resistance to disease, specifically brown rot.  I know about the AU series of plums, and have some myself (that haven't fruited yet) but I've heard too many negative comments about quality to recommend them.  Plus I don't think he needs something immune to brown rot, just something not hyper sensitive to it.

Some ideas:

French Petite- I've heard Ed, Lon, and others sing praises for this plum, does anyone raise this plum without spray?

Superior- I have this plum ordered for next spring and have it recommended by S. Smith and Ossi.  Can either of you guys comment on its susceptiblity to brown rot?

Any other suggestions?  We can go with Europeans or Jap/Amer hybrids.  He has room for about four trees.

Thanks in advance,
Mark
KS





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