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You Are Here Growers > Approved Chemicals > Fungicides




Azoxystrobin

Product Name
Quadris, Satori, and Equation

Application
Apply at 6-15.5 fl oz/A for control of sunflower rust at or before the first detection of disease. Make the first application at or just after early bud development. Apply according to the use directions for sunflower under the Oilseed Crops section of the federal label.

Disease Control
Sunflower Rust, also labeled for control of Alternaria leaf spot

Remarks:
Can be tankmixed with Warrior with Zeon Technology for control of diseases and insects on sunflower. The most restrictive labeling for any individual product applies when tank mixing.



Bacillus Subtilis (biological fungicide)

Product Name
Kodiak 2.75%

Application
Drill Box

Disease Control
Root diseases of all crops

Remarks:
Bacterium colonizes root system and competes with disease organisms that attack root systems.



Coniothyrium Minitans

Product Name
Intercept WG

Application
Apply pre-plant or post-harvest directly to the soil. Incorporate in top 2 inches.

Disease Control
Sclerotinia head, stem, and root rot in sunflowers.

Fluxapyroxad + Pyraclostrobin

Product Name
Priaxor

Application
Apply at 4-8 fl oz/A. Apply according to the use directions for sunflower under the Oilseed Crops section of the federal label.

Disease Control
For control of several fungal diseases including Alternaria leaf spot, Cercospora leaf spot, Powdery mildew, Rust, Septoria leaf spot, and White rust.

Metconazole

Product Name
Quash®

Application
Apply at 2.5-4.0 fl oz/acre. Make no more than 2 sequential applications before switching to a fungicide with a different mode of action.

Disease Control
Rust

Remarks:
Apply when conditions favor disease development and prior to infection. A second application may be made on a 7- to 14-day interval. Do not apply more than 8 oz product per acre per year. Minimum time (PHI) between application and harvest is 21 days.

Penthiopyrad

Product Name
Vertisan®

Application
Apply at 10-30 fl oz/acre for control of Alternaria leaf spot, Powdery mildew, Rust, and Septoria leaf spot. Make no more than 2 sequential applications before switching to a fungicide with a different mode of action.

Disease Control
Alternaria leaf spot, Powdery mildew, Rust, and Septoria leaf spot.

Remarks:
Apply prior to disease development and continue on a 7 to 14 day interval. Use higher rate and shorter interval when disease pressure is high. Minimum time (PHI) between application and harvest is 14 days. Do not apply more than 61 fl oz/acre per year.

Pyraclostrobin

Product Name
Headline EC® and Headline SC®

Application
The application rate is 6 to 12 ouncers per acre with a maximum of two applications per season.

Disease Control
The label now includes the following target sunflower diseases as a foliar treatment: Alternaria leaf spot, Powdery mildew, Rust, Septoria leaf spot and White rust.

Tebuconazole

Product Name
Orius 3.6F, Tebuzol 3.6F and Monsoon

Application
Apply 4-6 fl oz/ of Tebuconazole at the earliest sign of infection (rust pustules developing) or when weather conditions are favorable for rust development.

Disease Control
For optimum rust control, the lowest labeled rate of a spray surfactant should be tank-mixed with Tebuconazole. Tebuconazole must have two to four hours of drying time on plant foliage for the active ingredient to move systemically into plant tissue before rain or irrigation occurs. After this period of time, Tebuconazole will be resistant to weathering.

Remarks:
For maximum disease control, labels recommend using lowest rate of nonionic surfactant. Apply at earliest sign of infection. Do not apply more than 16 fl oz per season or within 50 days of harvest. See labels for further information or spray scheduling.

Directions for Use of These Products
It is a violation of Federal law to use any of these products in manner that is inconsistent with its labeling. For any requirements specific to your State or Tribe contact the State or Tribal agency that is responsible for pesticide regulation.


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