AMMONIUM SULFATE CAS N°: 7783-20-2

OECD SIDS
AMMONIUM SULFATE
4. ECOTOXICITY ID: 7783-20-2
DATE: 18.04.2006
determined.
Reliability: (2) valid with restrictions
Concentrations not measured. Limited documentation of
results.
11-MAY-2003 (96)
4.6.3 Toxicity to Soil Dwelling Organisms
Type:
Species:
Endpoint:
Method:
GLP:
Test substance:
other: field
other: Collembola
other: number of collembola
other: see Test Condition
no data
other TS: ammonium sulfate, 150 kg N/ha/a
Remark:
This test simulates ammonium sulfate deposition by acid
rain. Fertiliser application levels could be higher.
Result:
In the first year evaluation, a significant increase of the
numbers of Cryptostigmata in the organic layer to more than
double of control level was detected. In the second year, the
abundances of Cryptostigmata were still high, but the
differences to control were not significant.
As the concentrations applied were in excess of those
delivered by acid rain, it was concluded that acid rain
would not have a detrimental effect on soil collembola.
Test condition: Simulated rainfall delivered 150 kg N ha -1 a -1 (708 kg
(NH4)2SO4 ha -1 a -1) in monthly increments to a field
planted with Picea abies at 2500 ha-1, with no ground
vegetation. The trees were approximately 14 m high at the
time of the experiment, and the canopy covered approx. 90%
of the test area. The salt was dissolved in 1 l of water,
and sprayed on 6m2 plots in a randomised block design. The
soil pH of both experimental and control plots was 5.3 at
the end of the test. The soil fauna were extracted and
counted twice, at the end of year 1 and at the end of year
2.
Reliability: (2) valid with restrictions
concentration not measured. Only one concentration studied
Flag:
Critical study for SIDS endpoint
22-JUL-2004 (97)
Type:
Species:
Endpoint:
Method:
GLP:
Test substance:
Remark:
132
other: field
other: Cryptostigmata (family Acarina)
other: number of cryptostigmata
other: see Test Condition
no data
other TS: ammonium sulfate, 150 kg N/ha/a
This test simulates ammonium sulfate deposition by acid
rain. Fertilizer application levels could be higher. Similar
results were also found for other Acari, i.e. Prostigmata
and Astigmata (mineral layer only) at the end of year 1, and
Astigmata in both layers at the end of year 2. However,
Mesostigmata numbers did not differ significantly from
control in either year. No significant decrease was found in
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