AMMONIUM SULFATE CAS N°: 7783-20-2
AMMONIUM SULFATE CAS N°: 7783-20-2
AMMONIUM SULFATE CAS N°: 7783-20-2
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OECD SIDS<br />
<strong>AMMONIUM</strong> <strong>SULFATE</strong><br />
4. ECOTOXICITY ID: <strong>7783</strong>-<strong>20</strong>-2<br />
DATE: 18.04.<strong>20</strong>06<br />
5000 ppm ammonium sulfate. Germination was checked every 3<br />
days, until conclusion of the test due to lack of further<br />
germination on day 21.<br />
Reliability: (2) valid with restrictions<br />
Flag:<br />
Critical study for SIDS endpoint<br />
26-JAN-<strong>20</strong>04 (94)<br />
Species:<br />
Expos. period:<br />
Method:<br />
GLP:<br />
Test substance:<br />
other terrestrial plant: Picea abies<br />
60 month<br />
other: see Test Condition<br />
no data<br />
other TS: ammonium sulfate, solid<br />
Result: Ammonium sulfate application of 100 kg ha-1 yr-1 N and 114<br />
kg ha-1 yr-1 S spread as solid ammonium sulfate from 1988 to<br />
1993 made the trees more susceptible to drought, compared to<br />
those treated with N-free fertiliser. This could be seen as<br />
a reduction in the flushing of new shoots.<br />
Test condition: TEST ORGANISMS: Picea abies L. Karst, planted in 1966 on a<br />
clear cut site. The stand had an average basal area of about<br />
25 m2 ha-1 when the 45m x 45m field plots were established<br />
in 1987.TEST SITE: Located in S. W. Sweden (lat. 560 33',<br />
long. 130 13') about 16 km from the coast and 95-115 m above<br />
sea level. The mean annual precipitation is about 1100 mm.<br />
May and June are often very dry. The annual mean air<br />
temperature is about 7.50C. The mean pH of precipitation is<br />
4.5 (1988-1991), and the deposition adds <strong>20</strong>-25 kg ha-1 yr-1<br />
N and 10-55 kg ha-1 yr-1 S. The soil is a Haplic podzol on a<br />
loamy sand till, with a pHH2O of ca.3.9 in the humus layer<br />
and between 4.0 and 4.6 in the mineral soil down to 50 cm<br />
depth.<br />
TEST DESCRIPTION: 100 kg ha-1 yr-1 N and 114 kg ha-1 yr-1 S<br />
were spread as solid ammonium sulfate from 1988 to 1993. The<br />
experiment was set up in a randomised block desigh with 4<br />
replicates, except for the drought experiment, which was<br />
without replication. In the drought experiment, roofs were<br />
places 1-1.5 m above ground, preventing 2/3 of the<br />
throughfall from reaching the ground, during April -<br />
September 1992-1993.Needles were collected from dominant or<br />
co-dominant trees, with diameters equal to the mean diameter<br />
and to the mean + 1 standard deviation.<br />
Reliability: (1) valid without restriction<br />
Flag:<br />
Critical study for SIDS endpoint<br />
26-JAN-<strong>20</strong>04 (95)<br />
Species: other terrestrial plant: Phaseolus vulgaris L.<br />
Expos. period: 13 day(s)<br />
Remark:<br />
Result:<br />
130<br />
1) The authors suggest that, for the plant development stage<br />
studied, the changes seen were not signifigantly related to<br />
plant growth and development.<br />
2) The ammonium sulfate application rate is stated to be<br />
about 2 orders of magnitude above ambient episode<br />
concentration.<br />
Plants exposed to 26 mg/m3 ammonium sulfate aerosol for up<br />
to 3<strong>20</strong> hours showed no changes in plant biomass or leaf<br />
area. However, visible foliar injury occurred, and both<br />
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