Wheat |
600-750 g ai/ha |
Barley |
375-600 g ai/ha |
Apples |
15-37.5 g ai/hl |
Type |
AI concn |
Water-dispersible granule (WG) |
75% (w/w) |
? |
50% (w/w) |
Wettable powder (WP) |
Mallard duck |
LD50 >500 mg/kg Virginia quail LD50 >2,000 mg/kg |
Bluegill sunfish |
LC50 3.2 ppm Bobwhite quail LD50 >2,000 mg/kg |
Daphnia magna |
LC50 32.8 ppb Rainbow trout [96 hrs] LC50 2.41 ppm |
Fathead minnow |
NOEC 0.23 ppm Bee [contact] LD50 >101 mg/bee |
Mysid shrimp |
LC50 8.14 ppb Earthworm LD50 >111 g/kg soil |
Skeletonema costatum |
EC50 1.97 ppm |
Fate in :
The data in the table above are from acute studies.
Cyprodinil is practically non-toxic to birds, small mammals, bees and earthworms. It is moderately toxic to fish and very highly toxic to freshwater and marine invertebrates.
Fate in soil:
The half-life of cyprodinil in soil is 20-60 days; it is only slightly mobile in soil and the risk of contamination of ground water is low.
Fate in aqueous systems:
Cyprodinil is photolysed in water; the half-life is less than 14 days. It is not readily hydrolysed.
The major route of dissipation for cyprodinil in the environment is considered by the US EPA to be aerobic soil metabolism. It is characterised by EPA as 'slightly persistent to persistent' in soil, 'persistent' in sediments and 'moderately persistent to persistent' in water/sediment. Anaerobic soil and water/sediment studies indicated no biotransformation under anaerobic conditions. The product shows strong sorption to soil and low mobility.
Canada plans to re-evaluate Syngenta’s cyprodinil
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