Agriculture Reference
In-Depth Information
Table 5.36
continued
Active Ingredients
Trade Names
Bupirimate
Nimrod
Fenarimol.
Rubigan, Fenal
d.
Phenylamines
The phenylamine group of fungicides consists of the acylalanines, butyro-
lactones, and oxazolidinones. This group of fungicides includes metalaxyl,
furalaxyl, benalaxyl, and oxadixyl. These compounds show protective and
systemic activity against downy mildew, late blight, and other agents causing
disease on fruit trees, cotton, hops, soybeans, peanuts, ornamentals, and
grasses.
Mode of Action
The primary effect of these compounds on metabolism of sensitive fungi
lies in their inhibition of ribosomal-RNA synthesis. The secondary effects of
this inhibition is possible decrease in protein synthesis which would ulti-
mately kill the fungus.
Toxicity
These compounds exhibit low acute oral and dermal toxicity and are con-
sidered non-irritating to skin and eyes.
Table 5.37
Commercial products containing phenylamine fungicides.
Active Ingredients
Trade Names
Metalaxyl
Apron, Ridomil, Subdue
Furalaxyl
Fongarid, Fonganil
Benalaxyl
Galben, Tairel, Trecatol
Oxadixyl
Recoil, Ripost, Sandofan, Wakil
e.
Triazole Compounds
This group of effective systemic fungicides exhibit both protective and
curative properties. The group consists of triadimefon, triadimenol, biterta-
nol, hexaconazole, and propiconazol. They are broad spectrum fungicides ef-
fective against mildews and rusts on cereals, vegetables, deciduous fruits,
grapevines as well as ornamentals.
Mode of Action
The mechanism of action of this group is well studied. These compounds
effect fungal metabolism by inhibiting ergosterol synthesis. This compound
is an important component of the cell membrane, and its absence leads to al-
