Standard Test Methods for Organic Matter Content of Putting Green and Sports Turf Root Zone Mixes

ABSTRACT
These test methods establish the apparatus required, and standard calculations and procedures executed for quantifying the percent organic matter of volume ratio mixed putting green and sports turf root zone mixtures (except peat and other organic soils). Method A is performed by determining the loss on ignition (LOI). Method B or the Walkley Black method, on the other hand, is performed by a dichromate oxidation procedure whereby the color intensity of the reaction product is determined colorimetrically.
SCOPE
1.1 These test methods cover the determination of the percent organic matter of a putting green root zone mixture using a loss on ignition method or the Walkley Black method. These test methods are useful for quantifying the organic matter content of volume ratio mixed root zone mixes. Test Methods D2974 is recommended for peat and other organic soils.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use, nor the disposal of hazardous waste that may be generated. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see 8.2.6.

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Publication Date
30-Apr-2010
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ASTM F1647-02a(2010) - Standard Test Methods for Organic Matter Content of Putting Green and Sports Turf Root Zone Mixes
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:F1647–02a (Reapproved 2010)
Standard Test Methods for
Organic Matter Content of Putting Green and Sports Turf
Root Zone Mixes
This standard is issued under the fixed designation F1647; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.2 Method B —Organic matter content is determined by
the Walkley-Black method; a dichromate oxidation procedure
1.1 These test methods cover the determination of the
whereby the color intensity of the reaction product is deter-
percent organic matter of a putting green root zone mixture
mined colorimetrically.
using a loss on ignition method or the Walkley Black method.
These test methods are useful for quantifying the organic
4. Apparatus—Method A
matter content of volume ratio mixed root zone mixes. Test
4.1 Oven, capable of maintaining a constant temperature of
Methods D2974 is recommended for peat and other organic
105 6 5°C.
soils.
4.2 Muffle furnace, capable of producing constant tempera-
1.2 The values stated in SI units are to be regarded as
tures of 360 6 10°C.
standard. No other units of measurement are included in this
4.3 Evaporating dish or crucible, made of high silica or
standard.
porcelain of not less than 10-mL capacity.
1.3 This standard does not purport to address all of the
4.4 Desiccator,
safetyconcerns,ifany,associatedwithitsuse,northedisposal
4.5 Aluminum foil, heavy duty, and
of hazardous waste that may be generated. It is the responsi-
4.6 Balance, sensitive to 0.001 g.
bilityoftheuserofthisstandardtoestablishappropriatesafety
and health practices and determine the applicability of regu-
5. Apparatus—Method B
latory limitations prior to use. For a specific precautionary
5.1 Soil grinder,
statement, see 8.2.6.
5.2 Balance, sensitive to 0.01 g.
5.3 Sulfuric acid, concentrated (not less than 96 %),
2. Referenced Documents
2 5.4 Potassium dichromate, 1 N, made by dissolving 49.04
2.1 ASTM Standards:
reagent-grade potassium dichromate in water, and diluting to a
D2974 Test Methods for Moisture,Ash, and Organic Matter
volume of 1 L,
of Peat and Other Organic Soils
5.5 Spectrophotometerorcolorimeter,setatoradjustableto
E177 Practice for Use of the Terms Precision and Bias in
610-nm wavelength.
ASTM Test Methods
5.6 Standard, 10 000 mg/L as CO ,
E691 Practice for Conducting an Interlaboratory Study to
5.7 Pipets, assorted, capable of measuring volumes of 0.1 to
Determine the Precision of a Test Method
10 mL,
3. Summary of Test Methods 5.8 Glassware, assorted, to include 250-mL Erlenmeyer
flasks and funnels (75-mm ID), and
3.1 Method A—Organic matter content is determined by
5.9 Oven, capable of maintaining a constant temperature of
loss on ignition (LOI).
105 6 5°C.
6. Procedure—Method A
These test methods are under the jurisdiction of ASTM Committee F08 on
Sports Equipment and Facilities and are the direct responsibility of Subcommittee
6.1 Scoop 5 to 10 g of oven-dried (105 6 5°C) soil into
F08.64 on Natural Playing Surfaces.
tared crucibles.
Current edition approved May 1, 2010. Published May 2010. Originally
approved in 1995. Last previous edition approved in 2002 as F1647 – 02a. DOI: 6.2 Weigh and record weight to the nearest 0.001 g.
10.1520/F1647-02AR10.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Procedurewasbasedonprocedurepublishedin“MethodsofSoilAnalysis,Part
Standards volume information, refer to the standard’s Document Summary page on 2: Chemical and Microbiological Properties,” American Society of Agronomy
the ASTM website. Monograph No. 9, 2nd Ed.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
F1647–02a (2010)
6.3 Place the sample into a muffle furnace heated to 360 6 8.2.8 Set up a funnel with No. 2 or similar filter paper. Pour
10°C. Leave the sample in the furnace for 2 h. enough of the solution through the funnel to collect about 10
6.4 Cool to 105°C, or cover with a piece of foil and cool in mL.
a desiccator. 8.2.9 Readtheabsorbanceofthesampleat610nm.Referto
6.5 Weigh ash in a draft-free environment to the nearest the standard curve to obtain percent organic matter.
0.001 g.
9. Report
9.1 Report the following i
...

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