Table 26-4. Typical application intervals and modes of action of several fungicides labeled for brown patch and/or gray leaf spot control in tall fescue (Tisserat, 2006).

Common name 

Control† 

Typical application interval (d)

Physical mode of action‡

Fungicide group 

Product names (example) 

 

 

 

 

 

 

 

Azoxystrobin

Rs, Pg

14-28

Acropetal penetrant

Strobilurin

Heritage

Chlorothalonil

Rs, Pg

7-14

Contact

Phthalonitrile

Echo, Daconil, Manicure, Thalonil

Flutolanil

Rs

21-28

Acropetal penetrant

Dicarboximide

Prostar

Iprodione

Rs

14

Localized penetrant 

Dicarboximide

Chipco 26019,Fungicide X

Mancozeb

Rs, Pg

7

Contact

Carbamate

Fore, Foremec 80,Protect T/O

Maneb

Rs, Pg

7

Contact

Carbamate

Maneb,Pentathlon

Propiconazole

Rs, Pg

14-21

Acropetal penetrant

Dimethylation inhibitor

Banner MAXX

Pyraclostrobin

Rs, Pg

14-21

Localized penetrant

Strobilurin

Insignia

Quintozene (PCNB)

Rs

7-10

Contact

Aromatic hydrocarbon 

Defend, Engage, Penstar, Terraclor, Turfcide

Thiophanate-methyl

Rs, Pg

7-14

Acropetal penetrant

Benzimidazole

Fungo, Cleary's 3336, SysTec 

Thiram

Rs

7-10

Contact

Dimethylation inhibitor

Defiant, Lesco Thiram, Spotrete

Triadimefon

Rs

14-28

Acropetal penetrant

Dimethylation inhibitor

Accost, Bayleton, Fungicide VII 

Trifloxystrobin

Rs, Pg

14-21

Acropetal penetrant

Strobilurin

Compass

Triticonazole

Rs

14-28

Acropetal penetrant

Dimethylation inhibitor

Chipco Triton, Trinity

Vinclozolin

Rs

7-10

Localized penetrant

Dicarboximide

Curalan, Touche, Vorlan Flo

† Rs indicates that this fungicide is labeled for the control of brown patch in tall fescue turf; Pg indicates that this fungicide is labeled for the control of gray leaf spot (Pyricularia grisea) in tall fescue turf.

‡ An acropetal penetrant is moved systemically upward in the xylem from the point of absorption; a contact fungicide is active only at the site of placement; a localized penetrant remains in the area of initial entry after passing into underlying tissue in fungicidal amounts.

 

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Tall Fescue Monograph