ASTM E550-87(2002)
(Guide)Standard Guide for Preparing Granular Pesticide Ground Applicator Calibration Procedures
Standard Guide for Preparing Granular Pesticide Ground Applicator Calibration Procedures
SIGNIFICANCE AND USE
This guide covers the calibration of row, band, and broadcast applicators. Attainment of accurate and more uniform application can reduce the quantity of active ingredient required for a given degree of control, thus improving environmental quality and safety at a more economical cost. A single-calibration procedure applicable in all situations is not feasible because of the nature of the variables involved in chemical applications.
SCOPE
1.1 This guide is for those who prepare granular pesticide ground applicator calibration procedures. The purpose is to encourage methods that will improve uniformity and accuracy of application with granular applicators.
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 specific hazard statements see Section .
1.3 The values stated in acceptable metric units are to be regarded as the standard. The values in parentheses are for information only.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:E550–87 (Reapproved 2002)
Standard Guide for
Preparing Granular Pesticide Ground Applicator Calibration
Procedures
This standard is issued under the fixed designation E 550; 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 3.1.4 Weighing Device—A scale for weighing granules in
grams (or ounces) or kilograms (or pounds).
1.1 This guide is for those who prepare granular pesticide
ground applicator calibration procedures. The purpose is to
4. Hazards
encourage methods that will improve uniformity and accuracy
4.1 A cautionary statement for the safe handling of agricul-
of application with granular applicators.
tural chemicals shall be included with applicator calibration
1.2 This standard does not purport to address all of the
procedures.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Recommendations
priate safety and health practices and determine the applica-
5.1 The amount of granular material applied to a given area
bility of regulatory limitations prior to use. For specific hazard
is dependent on six factors. It is recommended that each of the
statements see Section 4.
following variables be given consideration when developing
1.3 The values stated in acceptable metric units are to be
specific calibration procedures:
regarded as the standard. The values in parentheses are for
5.1.1 OrificeArea—Theareaofthemeteringorificemustbe
information only.
adjustedtoregulatetheflowrate.Theorificeareaisdetermined
by the orifice setting. Adjustments in the orifice setting should
2. Significance and Use
always be made in one direction only such as from closed to
2.1 This guide covers the calibration of row, band, and
open to reduce variability in output for a particular setting.
broadcast applicators. Attainment of accurate and more uni-
5.1.2 Ground Speed—A constant speed of the applicator
form application can reduce the quantity of active ingredient
must be maintained for uniform application.
required for a given degree of control, thus improving envi-
ronmental quality and safety at a more economical cost. A
NOTE 1—The flow of granules through the orifice is not necessarily
single-calibration procedure applicable in all situations is not proportional to ground speed, even on applicators that use a rotor whose
speed varies with ground speed.
feasible because of the nature of the variables involved in
chemical applications.
5.1.3 Product—Each agricultural chemical applied requires
a separate calibration since there is a wide variation in size,
3. Apparatus
density, and shape of the granules. In addition, the nature of the
3.1 Apparatus needed will depend on the method of cali-
inert materials varies.
bration. Common equipment items include the following:
5.1.4 Width of Treatment—Calibrationproceduresshouldbe
3.1.1 Measuring Device—Tape of at least 25 m (50 ft) in
used to determine the amount in kilograms (or pounds) applied
length, or other suitable measuring device.
per unit area of surface in hectares (or acres) actually covered
3.1.2 Marking Devices—Stakes or flags for marking a
with the agricultural chemical. For band application, the area
measured course.
actually treated is the area in the band and not the area of
3.1.3 Containers—Paper, cloth, or plastic bags to collect
cropland covered. Some row crop recommendations are based
granules.
on treating “in-the-row” rather than the area actually covered.
In these cases, recommendations are generally based on the
amount of granules per row length (grams per 100 m or ounces
This guide is under the jurisdiction ofASTM Committee E35 on Pesticides and
per 1000 ft of row).
Alternative ControlAgents and is the direct responsibility of Subcommittee E35.22
5.1.5 Rotor Speed—Consult the manufacturer’s literature
on Pesticide Formulations and Delivery Systems.
for recommended rotor speeds that will give maximum effi-
Current edition approved Oct. 10, 2002. Published March 2003. Originally
approved in 1975. Last previous edition approved in 1998 as E 550 – 87(1998). ciency.
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