Fungicides

Heritage

Azoxystrobin

Description

• foliar spray

• FOR USE: turfgrass and ornamentals

• broad spectrum, systemic but DOES not control dollar spot

• suspension concentrate

Mechanism

• Group 11: Respiration

Hazards

• Caution

Bayleton

Triadimefon

Description

• systemic fungicide that is absorbed by roots

• controls dollar spot, fairy ring, brown patch, antrhacnose, gray leaf spot, stripe smut, fusarium blight, snow mold

Mechanism

• Group 3: Sterol synthesis

Hazards

• Caution

Captan

Description

• controls black rot, downy mildew, blight

• used for crops and ornamentals

• non-systemic

• comes as wettable powder

Mechanism

• Group M: Phthalimides

Hazards

• Danger, irreversible eye damage

Bravo, Daconil

Chlorothalanil

Description

• non-systemic, contact fungicide

Mechanism

• Group M

Hazards

• Danger, can cause irreversible eye damage

Bravo is for agricultural use.

Daconil is for use on athletic turf, sod farms, golf courses

Twosome

Chlorothalanil + Fenarimol

Description

• systemic and non-systemic fungicide combination

• flowable

• FOR USE: golf course turf, ornamentals in greenhouses,

• CONTROLS: Anthracnose, Brown Patch, Dollar Spot, Leaf Spot, Pink Snow Mold on turf

• CONTROLS: blight, leaf spot, powdery mildew, on ornamentals

Mechanism

• Group 2: Respiration

Hazard

• Danger

Rubigan

Fenarimol

Description

• systemic fungicide

• FOR USE: fruit trees

• EC

• controls Scab, Powdery Mildew, Rust, Leaf Spot

Mechanism

• Group 3: Pyrimidines

Hazard

• Warning

Aliette

Fosetyl-aluminum

Description

• Pythium, Yellow Tuft, Phytophthora

• agricultural use on fruit trees, nut trees, etc

• water-dispersable granule

Mechanism

• systemic fungicide applied to foliage or soil

• Group 33: Enhances foliage resistance

Hazards

• causes serious eye irritation

Chipco 26019

Iprodione

Description

• FOR use golf courses, sod farms, greenhouse ornamentals, christmas tree farms

• foliar application

• controls dollar spot, leaf spot, melting out, fusarium blight, snow mold

Mechanism

• Group 2: Respiration

Hazards

• Caution

Dithane, Fore

Mancozeb

Description

• broad spectrum, contact fungicide

• primarily used for crops and ornamentals

Mechanism

• Group M

Hazard

• Caution

Dithane is labeled for outdoor crops and turf (industrial, sod, golf). It has a 37% active ingredient formulation. Dithane is a flowable.

Fore is greenhouse grown ornamentals and has 80% active ingredient. It is in a wettable powder formulation.

Subdue

Metalaxyl

Description

• Water-soluble liquid for use on ornamentals, conifers, christmas tree farms, and turf

• offers superior control of Pythium blight on turfgrass

• generally used for the control of root rot diseases

Mechanism

• Group 4: Nucleic acid synthesis

• applied as microemulsion

Hazard

• Caution

Eagle

Myclobutanil

Description

• FOR USE: turfgrass, ornamentals, nurseries, and some fruit trees

Mechanism

• Group 3: dimethyation, Sterol synthesis inhibitor

• emulsion in water

Hazard

• Caution

Banol

Propamocarb Hydrochloride

Description

• Pythium control product

• water miscible concentrate

• FOR USE on turfgrass and ornamentals

Mechanism

• Group 28: Cell membrane permeability

Hazard

• Caution

Banner

Propiconazole

Description

• FOR USE on turfgrass

  • Dollar Spot, Brown Patch, and Rust

• FOR USE on ornamentals

  • powdery mildew, rusts, leaf spot, scab, and blight

• water emulsion

• systemic

Mechanism

• Group 3: Dimethaylation Inhibitor (DMI) for sterol synthesis

Hazard

• Caution

Touche EG

Vinclozolin

Description

• not permitted for residential use. used for industrial sites and golf courses

• emulsifiable concentrate

Mechanism

• dicarboximide mode of action, not fully understood

Hazard

Group 11: Respiration

How does it work?

• These fungicides work by inhibiting mitochondrial respiration in fungi

What fungicide fall in this category?

• Azoxystrobin (Hertitage)

Group 3: Sterol synthesis

How does it work?

• inhibit production of 14α-demethylase, which is an enzyme involved in the production of ergosterol, which is important in producing cell membranes, etc.

What fungicides fall in this category?

• Bayleton (Tridimefon)

• Fenarimol (Rubigan)

• Myclobutanil (Eagle)

• Propiconzaole (Banner)

Group M: Phthalimides

How does it work?

• prevent the germination of fungal spores by blocking their production enzyme

What fungicides fall in this category?

• Captan (Captan)

• Chlorothalanil (Bravo, Daconil)

• Mancozeb (Fore, Dithane)

Group 2: Respiration

how does it work?

• inhibits fungal respiration by attacking component of electron transport chain

• Group 2 fungicides (SDHIs) target Succinate Dehydrogenase (SDH), which is part of the citric acid cycle

What fungicides fall in this category?

• Chlorothalanil + Fenarimol (Twosome)

• Iprodione

Group 33: hydroxystilbenes

How does it work?

• Group 33 fungicides work by activating the plant's natural defense mechanisms. When applied, these fungicides stimulate the plant to produce certain defense-related proteins, including phytoalexins and pathogenesis-related proteins (PR proteins).

• Group 33 fungicides are considered non-traditional in their mode of action because they do not directly kill the pathogen. Instead, they activate the plant's innate immune system to make the plant more resistant to fungal attacks

What fungicides fall in this category?

• Fosetyl-aluminum (Aliette)

Group 4: Nucleic Acid Synthesis

How does it work?

• These fungicides typically inhibit specific enzymes involved in the synthesis of purines or pyrimidines, which are the building blocks of DNA and RNA. By disrupting nucleic acid synthesis, the fungicide prevents the fungal pathogen from reproducing and growing, effectively controlling the disease.

What fungicides fall in this category?

• Metalaxyl (Subdue)

Group 28: Cell Membrane Permeability

How does it work?

• Group 28 fungicides specifically target the cell membrane of fungi, which is composed of lipids and proteins that control the movement of substances in and out of the cell.

• Causes eventual death of the cell

What fungicides fall in this category?

• Propamocarb Hydrochloride (Banol)