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
 Navigation
Articles
Gallery of Plants
Blog
Tech Blog
Plant Profiles
Patents
Mailing Lists
    FAQ
    Netiquette
    Search ALL lists
    Search help
    Subscription info
Top Stories
Links
sHORTurl service
Tom Clothier's Archive
 Top Stories
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

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

Re: CULT: trace elements

  • Subject: Re: CULT: trace elements
  • From: Linda Mann <lmann@icx.net>
  • Date: Sun, 26 Aug 2001 18:35:30 -0400

There are a couple of issues to think about as far as trace elements go:
1) trace element requirements vary from one kind of plant to another,
and 2) trace element content and availability vary from one kind of soil
to another.

To my knowledge, no detailed studies of trace element requirements of
irises have been done.  And it's possible that the requirements among
different species of irises are not the same.  If the ancestral species
of bearded irises have different trace element requirements, who knows
what a mix might be in modern hybrids.  I've seen some research that
found some cultivars of agricultural crops have different trace element
requirements, so it could be that there are differences in requirements
for different cultivars of species of iris as well.

Trace elements in different soil types come from various sources, mostly
from the original rocks that have weathered to make the soil, but also
from deposition of dust, fly ash from industrial smoke stacks,
fertilizer, etc etc.  If you are gardening in an area with complex
geology, trace element content may vary a lot among soil types.  Also,
the availability of trace elements varies with the pH with some becoming
less available at high pH and vice versa.  They are called trace
elements because if there is more than a trace present, they are toxic
to plants, so you don't want to be adding a lot before finding out if
your plants don't have enough.

The good news is that most garden soils probably have enough of most
trace elements in most places for growing most plants <g>  If you are in
an area where any  trace elements are in short supply for growing
plants, your local garden center may know what is most likely to be
missing.  Better sources of information are local farm stores, ag
extension offices, and ag universities in your state.  Introductory soil
science books often have maps showing which regions of the country are
known to be low in trace elements for particular crops.  For example,
this area is low in boron for corn production.  But it only takes about
a teaspoon of borax per acre to provide enough additional boron for
corn.

The only situation where I would always use fertilizer with trace
elements included would be in sand culture or in areas where it rains so
much that all nutrients are being steadily leached out of the soil (like
here most years).

I am intrigued by the Ernst article about using sulfur.  Wish I knew
more about soil sulfur dynamics - time to go to the library.

.. etc....etc...

Linda Mann east Tennessee USA zone 7/8


------------------------ Yahoo! Groups Sponsor ---------------------~-->
FREE COLLEGE MONEY
CLICK HERE to search
600,000 scholarships!
http://us.click.yahoo.com/zoU8wD/4m7CAA/ySSFAA/2gGylB/TM
---------------------------------------------------------------------~->

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 






 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index