AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
Result:
No beetle mortality was found upon application of 23.52 kg
Al ammonium sulfate per ha. Application of 35.29 kg ammonium
sulfate / ha resulted in 4.4% beetle mortality, 24 hours
after application.
Test condition: TEST ORGANISMS: Adult Thermonactus basillaris (Harris) were
collected in CDC minature light traps located at the Rice
Research station near Crowley, Louisiana, approximately 24
hours prior to the field test. The beetles were maintained
in a 45.5 l container partially filled with well water
before being transported to the test site. Culex
quinquefasciatus Say larvae from a laboratory colony were
provided as a food source, to prevent canabalism among the
beetles.
TEST VESSEL: For each test, five styrofoam floats
(39.37x26.67x2.54 cm) were placed throughout a previously
selected rice field. Each float contained 2 holes, into
each of which a 500 ml beaker was inserted. Each beaker
contained 400 ml of well water and five Thermonactus
basillaris (Harris) adults. The beakers were covered with a
1.27 cm hardwire mesh, to prevent beetle escape. Two
additional beakers with 5 adult beetles in each served as
controls for each test.
TEST METHODOLOGY: Aerial application of the chemicals was
made using a Grunman AgCat aircraft. Each agrichemical was
applied according to rates and specifications printed on the
label. Approximately 1 hr after the agriculture application,
the beakers were removed from the site by suitably protected
personnel, and beetle mortalities were recorded. The beakers
were then transported to the laboratory, and posttreatment
mortalities after 6, 12, and 24 hours were determined.
Reliability: (2) valid with restrictions
Concentrations not measured. Limited documentation of
results. Limited description of rice field parameters.
11-MAY-2003 (101)
4.7 Biological Effects Monitoring
4.8 Biotransformation and Kinetics
4.9 Additional Remarks
Memo:
Remark:
140
Comment on ammonium sulfate effect on mycorrhizal funghi
Effects of ammonium sulfate, deposited both as a fertiliser
and as acid rain, on mycorrhizal funghi, have recently been
summarised (ref). All results are dependent upon the
vegetation and soil type. With regard to fertiliser
deposition, several reports indicate a decrease in
colonisation by ectomycorrhizal fungi (ECM), though this
effect may be short lived, with 2 studies showing recovery 3
years and 13 years after fertiliser deposition. Several
other reports show no decline in ECM colonisation. Reports
of both types are available for pine forests, upland
northern hemisphere sites, and heathland. The majority of
reports do indicate some shift in the structure of the ECM
community.
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