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nafex - Re: [NAFEX] Black walnuts dry in shell

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  • From: "Stephen Sadler" <Docshiva@Docshiva.org>
  • To: "'North American Fruit Explorers'" <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Black walnuts dry in shell
  • Date: Sun, 19 Dec 2010 11:32:13 -0800

I’m not going to be any help.  Somehow, that’s not stopping me from posting.

I’ve had one black walnut tree, and every once in a while same nutmeats would be shriveled and inedible.  I also had several filberts where 100% of the meats were in the same condition. 

If you’re suspecting a pathogenic cause for your walnut problem – whether a pest, fungus, or other – I’m with you.  I’ve also had no success figuring out what the problem was.  When it was a few nuts, my guess was an insect; with the whole/tree problem with the filberts, I guessed something microbial.   Either a pest or disease problem could be associated with weather.  It’s interesting that the reports seem to be of dry, rather than wet, weather.

I suppose if I just wanted production I’d treat for about everything: inoculating with some of the new biological controls for fungus/some bacteria; using Surround for difficult borers; using neem through the season as a general control – etc.  If I wanted to track down the problem and had a few trees to play with, I might try a differential diagnosis by applying separate control measures to each; I might also get busy with making cultures.  I would think someone would already have done so, though.  If I had gumption, I’d research how common the problem was, if it were really undiagnosed, see if there was anyone looking specifically at it, and maybe get a grant.  Maybe that would be too much gumption. 

 

~ Stephen

 

 

From: nafex-bounces@lists.ibiblio.org [mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of Lee Reich
Sent: Saturday, December 18, 2010 8:00 PM
To: North American Fruit Explorers
Subject: Re: [NAFEX] Black walnuts dry in shell

 

Last year the nutmeats were a little shriveled and may have been a tad sweeter. This year, though, totally black, totally dried out, totally inedible. The water table is not that far down. My well is only 10' deep so I'd think the big, old tree could get water.

 

Lee Reich, PhD

 

Books by Lee Reich:

A Northeast Gardener's Year

The Pruning Book

Weedless Gardening

Uncommon Fruits for Every Garden

Landscaping with Fruit

 

 

 



 

On Dec 18, 2010, at 9:27 PM, Jwlehman@aol.com wrote:



In a message dated 12/18/2010 4:24:42 PM Eastern Standard Time, 6ducks@gmail.com writes:


In a very warm dry summer we would get some shriveled nuts, but I remember thinking that the nut meats tasted a little sweeter when just slightly shriveled…  just a thought.



I have observed the same thing.

Jerry
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