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General Information
- Fosetyl-Al is a
broad-spectrum fungicide that acts by inhibiting germination of
spores or by blocking development
of mycelium and sporulation.
- Fosetyl-Al is a
fungicide for various horticultural crops used to control a range of
diseases including
Phytophthora, Pythium and Plasmopara.
- Fosetyl-Al is
considered a strong eye irritant
Analysis
Methods
- The degradation of
Fosetyl-Al in soil under aerobic conditions is quite rapid and is
due to microbial action.
- Fosetyl - al is
extracted from the whole fruit of peels usig 50/50 mixture of 0.1
hydrochloric acid and acetonitril.
- Method of analysis was
developed to determine the residue of Fosetyl - al in plants.
Application
- Fosetyl-AI was
injected at 4 sites into avocado (Persea americana Mill.) trees in
Dade and Collier Counties, Florida for the control of Phytophthora
cinnamomi Rands which causes root rot.
- Metalaxyl, fosetyl-Al,
dimethomorph and cymoxanil were applied as a soil drench to evaluate
their ability
to control in vitro and in vivo Phytophthora cactorum and P.
citrophthora, agents of crown rot of peach tree.
- A fungicide namely
Aliette WG 800 (80% Fosetyl-Al) was pulverized on
tomato(Lycopersicon esculentum Mill.) grown under greenhouse
conditions and the likely effects of this fungicide on stomata of
tomato were examined.
Report
- Failures of fosetyl-Al
(Aliette) to control hop (Humulus lupulus) downy mildew, caused by
Pseudoperonospora humuli, have recently occurred in northern Idaho
and Oregon.
- The fosetyl-Al
concentration effective against 50% of the P. humuli isolates (ED50)
from each location was estimated
from the linearized data.
- The ED50 values
indicate that fosetyl-Al was about one-third as effective against P.
humuli isolates from commercial hop yards in northern Idaho and
Oregon
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