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Re: [SANET-MG] nutrition in a bottle or a bag?
Howdy Frank -
Good to see you on Sanet. Texas Plant & Soil Lab
uses a unique extraction technique based on C02,
so the numbers on the soil test results need to
be intepreted via the guidelines established by
Soil Analysis Guide Sheet
--Texas Plant & Soil Lab--
Based on your crop response, you've got a good
soil program underway.
And surely you have other practices and inputs
that you haven't mentioned.
In an earlier post you made a point that is relevant
to this discussion list. The infrastructure
of organics that provides seeds, soil fertilty, pest
control, and animal feed inputs is lacking in many parts
of the U.S.
It takes considerable effort on the part of farmers to
source these materials; i.e., where you can buy
products at wholesale prices. Secondly, the shipping
costs are exhorbitant. The cost to ship can double
the price of the original product.
That's why organic farming associations and cooperatives
can help make a difference. They can purchase products
in volume and arrange for shipping and pickup at regional
Another reailty facing organic farmers is that 90- 100%
of the surrounding cropland for corn, cotton, and soybeans
is now GMO. Just a few years ago the acreage was about
66%. Now it is 100% in many parts of the cornbelt, cottonbelt,
and soybean belt. Herbicide drift and GMO drift is therefore
a major factor.
Organic farmers have as many challenges today as they
did twenty years ago.
>From: "Frank A. Schultz, III" <wb5ayy@AIRCANOPY.NET>
>Sent: Jun 24, 2007 2:08 AM
>Subject: Re: [SANET-MG] nutrition in a bottle or a bag?
>Sorry for the tardy reply - can't get to the computer much, these days (its
>more of a winter activity, you know). Our place is in Red Oak, Texas -
>heavy, dense black clay soil (Black Gumbo) with a CEC of 40 to 50, and a pH
>of around 7.2 to 7.6. As you may suppose, we use sulphur and sulphur
>compounds at every opportunity. The dirt is quite sticky when wet, but
>clods are as hard as concrete when dry. The lab that I am presently using
>is that of Mr. K. Chandler, Texas Plant & Soil Lab -
>www.txplant-soillab.com - a gentleman and establishment well known and
>respected in the organic circles of these parts. I may perhaps be able to
>send you a pdf (if I can find it) of some of his reports in full from last
>year, if you're interested...
>As a brief summary, herewith some average numbers:
>O.M. = 1.30 to 2.15
>Salts E.C. = 0.48 to 0.72
>NO3 #/ac. = 16 to 83
>P2O5 #/ac. = 5 to 16
>Salt Cations ppm by H2O and by CO2 Extraction Methods:
>K = 9 to 15 (H2O) and 30 to 41 (CO2)
>Na = 6 to 19 and 52 to 68
>Ca = 95 to 121 and 1075 to 1489
>Mg = 3 to 4 and 16 to 26
>Ratio Na/Ca = 0 to 1
>Ratio Na/Mg = 17 to 23
>Zn - ppm = 0.31 to 0.56
>Cu - ppm = 0.77 to 0.96
>Fe & Mn test adequate.
.... etc ....
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