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  • From: "William Freels" <w.freels@worldnet.att.net>
  • To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Soil test
  • Date: Thu, 19 Oct 2006 17:10:16 -0500

Friends:

Cation Exchange Capacity ??????????

Try WIKIPEDIA
and
Ask WHAT IS CATION EXCHANGE CAPACITY

My idea is that sand would have a low exchangecapacity
and
clay would have a higher exchange capacity.

Let me know if this is "sort-of" correct.

Best regards, Bill Freels, Paducah, Ky
----- Original Message -----
From: "Mark or Helen Angermayer" <hangermayer@isp.com>
To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
Sent: Wednesday, October 18, 2006 11:21 PM
Subject: [NAFEX] Soil test


> I recently had my soil tested and had some questions about it. I wonder
if
> some of you would be interested to look over the results below and offer
any
> comments. I don't know diddly about agronomy.
>
> The soil sample was taken from 10 holes. In a post, Jerry recommended A&L
> labs several months ago and it turned out they were the cheapest lab I
could
> find for the amount of testing done. The lab had a very fast turn around
> time. Here are the results:
> All numbers are in PPM unless otherwise noted. Also, they rated the
amount
> of each element as either (Very Low-VL; Low-L; Medium-M; High-H; Very
> High-VH)
>
> Organic Matter=4.8%; Phosphorus-Bray P1 ppm-P=5(VL); K=101(M);
Mg=330(H);
> Ca=2900(H); S=11(M); Zn=3.5(M); Mn=33(H); Fe=24(H); Cu=1.7(H);
> B=1.0(M); Soil pH=6.9; CEC-meq/100g=17.8; Percent Base
> Saturation-(%K=1.5; %Mg=15.5; %Ca=81.6; %H=1.5)
>
> I also asked for fertilizer recommendations for peaches. Here they
> are(lbs/acre):
>
> Lime=0; N=65; Phosphate-P205=100; Potash-K20=95; Mg=0; S=0; Zn=2.5;
> Mn=0; Fe=0; Cu=0; B=1
>
> Here are some questions I have. Any help would be appreciated, as well as
> any comments.
>
> -Zn, B, K, and S are all listed as Medium in amount, but the
recommendations
> only call for adding Zn, B, and K(Potash). What about S?
>
> -I thought peaches require a pH of 6.5. I can't see that the fertilizer
> recommendations would lower the pH. Is 6.9 OK for peaches?
>
> -What in the world is Cation Exchange Capacity (CEC)? Is it very
important?
>
> -I only have about one acre of land and am growing fruit trees on about
1/2
> of it. Am I likely to find a Coop that will mix such a small amount of
> fertilizer? If so, any idea on what would be a fair price? I would
> probably need it bagged. If they won't mix it for me should I just try to
> buy some raw phosphate since it's most lacking in the soil?
>
> -I've read P only moves down about 1 inch per year. Will I likely have to
> put it on every year? Would it help to put a little extra on the first
year
> since it's so low?
>
> Thanks,
> Mark Angermayer
> Zone 5 Kansas
>
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