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

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 Method D 2974 is recommended for peat and other organic soils.  
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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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Historical
Publication Date
09-May-1999
Current Stage
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ASTM F1647-99 - Standard Test Methods for Organic Matter Content of Putting Green and Sports Turf Root Zone Mixes
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Designation: F 1647 – 99
Standard Test Methods for
Organic Matter Content of Putting Green and Sports Turf
1
Root Zone Mixes
This standard is issued under the fixed designation F 1647; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Apparatus—Method A
1.1 These test methods cover the determination of the 4.1 Oven, capable of maintaining a constant temperature of
percent organic matter of a putting green root zone mixture 105°C.
using a loss on ignition method or the Walkley Black method. 4.2 Muffle furnace, capable of producing constant tempera-
These test methods are useful for quantifying the organic tures of 360°C.
matter content of volume ratio mixed root zone mixes. Test 4.3 Evaporating dish or crucible, made of high silica or
Method D 2974 is recommended for peat and other organic porcelain of not less than 10-mL capacity.
soils. 4.4 Desiccator,
1.2 This standard does not purport to address all of the 4.5 Aluminum foil, heavy duty, and
safety concerns, if any, associated with its use, nor the disposal 4.6 Balance, sensitive to 0.001 g.
of hazardous waste that may be generated. It is the responsi-
5. Apparatus—Method B
bility of the user of this standard to establish appropriate safety
5.1 Soil grinder,
and health practices and determine the applicability of regu-
latory limitations prior to use. For a specific precautionary 5.2 Balance, sensitive to 0.01 g.
5.3 Sulfuric acid, concentrated (not less than 96 %),
statement, see 8.2.6.
5.4 Potassium dichromate, 1 N, made by dissolving 49.04
2. Referenced Documents
reagent-grade potassium dichromate in water, and diluting to a
2.1 ASTM Standards: volume of 1 L,
D 2974 Test Methods for Moisture, Ash, and Organic Mat- 5.5 Spectrophotometer or colorimeter, set at or adjustable to
2
ter of Peat and Other Organic Soils 610-nm wavelength.
E 177 Practice for Use of the Terms Precision and Bias in 5.6 Standard, 10 000 mg/L as CO ,
2
3
ASTM Test Methods 5.7 Pipets, assorted, capable of measuring volumes of 0.1 to
E 691 Practice for Conducting an Interlaboratory Study to 10 ml,
3
Determine the Precision of a Test Method 5.8 Glassware, assorted, to include 250-ml Erlenmeyer
flasks and funnels (75-mm ID), and
3. Summary of Test Methods
5.9 Oven, capable of maintaining a constant temperature of
3.1 Method A—Organic matter content is determined by
105°C.
loss on ignition.
4 6. Procedure—Method A
3.2 Method B —Organic matter content is determined by
the Walkley-Black method; a dichromate oxidation procedure 6.1 Scoop 5 to 10 g of oven-dried (105°C) soil into tared
whereby the color intensity of the reaction product is deter- crucibles.
mined colorimetrically. 6.2 Weigh and record weight to the nearest 0.001 g.
6.3 Place the sample into a muffle furnace heated to 360°C.
Leave the sample in the furnace for 2 h.
1
These test methods are under the jurisdiction of ASTM Committee F-8 on
6.4 Cool to 150°C, or cover with a piece of foil and cool in
Sports Equipment and Facilities and are the direct responsibility of Subcommittee
a dessicator.
F08.52 on Playing Surfaces and Facilities.
Current edition approved May 10, 1999. Published August 1999. Originally 6.5 Weigh in a draft-free environment to the nearest 0.001 g.
published as F 1647 – 95. Last previous edition F 1647 – 98.
2
Annual Book of ASTM Standards, Vol 04.08.
7. Calculation of Percent Organic Matter, Method A
3
Annual Book of ASTM Standards, Vol 14.02.
4
7.1 Calculate percent organic matter as follows:
Procedure was based on procedure published in “Methods of Soil Analysis, Part
2: Chemical and Microbiological Properties,” American Society of Agronomy
Monograph No. 9, 2nd Ed.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
1

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F 1647
LOI,% 5 @~weight at 105°C—weight at 360°C!/weight at 105°C# 3 100 9. Report
(1)
9.1 Report the following information:
9.1.1 Sample identification,
8. Procedure—Method B
9.1.2 Sample condition when received,
8.1 Preparing a Standard Curve:
9.1.3 Percentage organic matter to nearest 0.01%, and
8.1.1 Set up five 250-ml Erlenmeyer flasks.
9.1.4 Method used: A (Loss on Ignition) or B (Walkley-
8.1.2 Use a pipet to pipet the volumes of standard solution
Black).
into the flasks, as listed below.
10. Precision and Bias
mL of 10 000 mg/L CO % Organic matter
2
10.1 Interlaboratory Test Program—An interlaboratory
00
study was conducted in accordance with procedures of Practice
0.20 0.9
0.50 2.2
E 691. Three randomly selected test specimens for each of six
1.00 4.4
root zone mixes were sent to nine laboratories for organic
1.20 5.3
matter content determinations using Method A, Loss on Igni-
8.1.3 Pipet 10 mL of potassium dichromate into each flask.
...

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