Apples |
2.5-5 g ai/hl |
Citrus |
2.5-5 g ai/hl |
Ecotoxicology:
Bees:No adverse effect on honeybees at 250 ppm (5 recommended dose).Birds: LD50 for bobwhite quail and mallard ducks >2000 mg tech./kg. Dietary LD50 (8 d) for bobwhite quail and mallard ducks >5000 ppm.Daphnia: LC50 (3 h) 0.085 mg/l.Fish: LC50 (48 h) for carp 0.006 mg/l.Other beneficial spp.:Relatively non-toxic to predacious mites. Little adverse effect at 25-50 ppm on Chrysopa nipponensis, Harmonia axyridis, Ephedrus japonicus, Misumenops tricuspidatus, Lycosa pseudoannulata, Orius
Environmental fate:
Soil: DT50 26.3-49.7 d (J. Pestic. Sci., 18, 67-75 (1993)).
Fate in :
In soil and water, the product has two main routes of degradation: photodegradation and microbial degradation. Fenpyroximate is practically non-toxic to birds while it is highly toxic to fish and aquatic invertebrates.
Fate in soil:
The half-life of fenpyroximate in the soil is approximately one month. It has weak mobility in the soil, but no tendency to accumulate or migrate. The Koc varies from 7,545 (sand soil) to 58,333 (loam) with an average value of 33,988
Soil photolysis (laboratory) half life is 22 days, similar to the value obtained from field trials (16-31 days).
Fate in aquatic systems:
Fenpyroximate has a half-life of 226 days at neutral pH.
The half life in aqueous photolysis studies is 0.5 - 1.5 hours.
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