Sulphursoil - Delano Development Corporation Page: 4 of 34
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
GROWERS TESTING SERVICES
oH AGRICULTURAL LABORATORY
2424 E. VALLEY OAKS DRIVE * SUITE D " VISALIA, CA 93291 * 209-732-TEST * 732-8378
July 31, 1985 R E C E I V E D
Herbert Rogers, Jr. AUG 31985
ROGERS ENGINEERING CD.,INC.
467 Hamilton Ave. - Suite 29 Rgep Eineuing Co, nC.
Palo Alto, CA 94301 FRANCISCO
I apologize for the delay in getting these results to you.
As I explained to you on the phone, the SUL-FE could not be
evaluated by most of our conventional soil test because of the
highly acidic nature of SUL-FE. A saturated paste of the
material you submitted had a pH of 0.6 pH units. The acid
content was determined by mixing a known amount of SUL-FE with
water and titrating the acid mixture with standard Sodium
Hydroxide solution until all available acidity was neutralized.
Expressed in terms of 100% Sulfuric Acid, the SUL-FE displayed an
acid content of 6.3%. Obviously, addition of SUL-FE will have a
direct, immediate effect on an alkakine soil., Also, any
elemental sulfur present will have an additional effect as the
sulfur is oxidized to eventually form Sulfuric Acid.
Is SUL-FE acidic enough to be of value in Western soils with
a Calcium Carbonate content of 1 to 10% ? An acre-6" of soil
weighs approximately 1000 tons and therefore may contain 10 to 100
tons of "free lime". One ton of SUL-FE would contain 0.063 tons
(126 lbs.) of Sulfuric Acid which in turn neutralizes Calcium
Carbonate on essentially a one to one basis (49.04 to 50.04).
An application of one ton of SUL-FE to an acre of calcareous soil
would probably not have much effect on the pH of the soil. There
may be some positive effects for shallow-rooted crops. SUL-FE
should be an excellent source of Iron. Properly designed and
conducted field trials shoud be conducted to establish the value
of SUL-FE as a soil 'amendment.
I hope these comments prove useful to you.
Jerry B. Rivers
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Sulphursoil - Delano Development Corporation, report, June 1, 1985; United States. (digital.library.unt.edu/ark:/67531/metadc892856/m1/4/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.