hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Stalk strength in Minn. vs. Ark

  • To: Multiple recipients of list <iris-l@rt66.com>
  • Subject: Stalk strength in Minn. vs. Ark
  • From: bstassen@comp.uark.edu (Robert E. Stassen)
  • Date: Mon, 11 May 1998 20:41:49 -0600 (MDT)


Yesterday, I returned from southwestern Minnesota (the Fatherland) and once
again was "stricken" by the thickness and sturdiness of the TB stalks grown
on these high pH (7.5+) soils.  They are way ahead of normal bloom up there,
with most TB stalks 'free' of the boot leaf.  There is no flexibility to the

 Here in the Ozarks, at the other extreme of low pHs (<6, blueberry zone)
with red (0 organic matter) soil, my TB stalks, while adequate, are
comparatively flimsy, thin and brittle -- I think our cats could snap them
with their tails.   (JI, SI, and SPU all are looking good, by the way.)

What is the 'conventional wisdom' on this?  I'm apt to attribute it to soil
pH, but I can't figure out what nutrient is unavailable due to the lower pH
--or is it the lack of a nutrient associated with organic matter, such as
nitrogen.  (I do not fertilize my TBs with nitrogen--maybe I should, I've
been 'gun shy' of this because I've felt it would make matters worse).  I
have a tough time believing that a soil with a clay base could ever be low
in potassium, but I will soil test.  This is a case where no element is
'limiting' but there must be a more complex interaction of acidity with
plant growth.

I am under a self-imposed moratorium on TBs until I can figure this out.

Walter--you've grown TBs in TX (high pH) and MS low pH--what's your
experience with this?  (Both places had low O.M., I presume.)

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index