[NAFEX] NAFEX] Rosseyanka

O'Barr, R. D. topgun at otelco.net
Thu Dec 1 19:32:59 EST 2005


Are you sure it is Manganese deficency? In Louisiana the wetter sites with
pecans had the highest Manganese levels. I ran over 1,000 samples over
several years and this was the trend. Corn can show stripes from Magnesium
as well as zinc deficiencies.

R. D. O'Barr
Zone 7
----- Original Message ----- 
From: "kieran or donna" <redherring at tnaccess.com>
To: <nafex at lists.ibiblio.org>
Sent: Thursday, December 01, 2005 10:28 AM
Subject: [NAFEX] NAFEX] Rosseyanka


> Jerry said:
> "Yes, I believe Rosseyanka
> is less susceptible to KSD, especially seeing it is so winter hardy. David
> heavily fertilized his was and I suspect went into the winter too tender,
> was
> damaged, ...shepherd hooked, but not killed"
>
> I grafted Rosseyanka on native persimmon, it didn't wait till winter but
> went straight into the shepherd's crook shape.  I chopped the tree to the
> ground and burned it.  I kinda suspect now that manganese toxicity as
> someone mentioned once might be behind it, as the tree was on very acid
> clay.  Could the native trees think nothing of high Mn levels, while it
> kills the kakis?  I don't have kakis to compare, as I don't like them very
> much.  The tree I grafted back in east TN did fine, but the soil wasn't
> nearly as acidic there.  The weird thing is that where we have limed, (ran
> the garden up to about 6.4 though I'm sure it's dropping) the corn shows
Mn
> deficiency each and every year.  The only way I have found to deal with it
> is to throw some sulfur around.  High pH, high organic matter, and high
> rainfall are a recipe for low Mn uptake.  All I can control is the pH.
This
> year we didn't have to worry about the high rainfall, (got 1" per mo in
Sept
> and Oct, hot months too, with intense sunlight beating down daily) and the
> corn was still yellow striped till it got some sulfur.  Donna
>
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