Kresoxim-Methyl 50% WDG

Kresoxim-Methyl 50% WDG is a strobilurin fungicide used for foliar disease management in registered crops. It belongs to FRAC Group 11 and works as a QoI fungicide, blocking fungal respiration at the Qo site of the cytochrome bc1 complex. Kresoxim-methyl is associated with protective, curative, and eradicative activity and is also described as having long residual effects.

This formulation is most suitable for crop programs where disease control needs to be connected to clear crop-disease situations rather than a general broad-spectrum claim. The strongest registered-use directions include apple and pear scab programs, grape foliar disease programs, cucurbit powdery mildew and gummy stem blight programs, and pecan scab management.

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Kresoxim-Methyl 50% WDG Description

Item Details
Product Name Kresoxim-Methyl 50% WDG
Active Ingredient Kresoxim-Methyl
Content 50%
Formulation WDG
Product Type Fungicide
Chemical Group Strobilurin
FRAC Group 11
Mode of Action QoI fungicide / respiration inhibitor
Main Use Direction Foliar disease control in registered crops
Application Method Spray application according to the approved local label

These core specifications match the product identity shown on the current product information and the U.S. EPA label for Kresoxim-methyl 50 WDG Fungicide.

Main Functions

Kresoxim-Methyl 50% WDG is mainly used to:

  • Control foliar fungal diseases
  • Reduce infection pressure on leaves and fruit
  • Support preventive and early curative disease management
  • Provide a FRAC 11 fungicide option in rotation programs
  • Maintain disease protection under conditions where residual activity matters

Its practical role is strongest in crop programs where disease pressure can build repeatedly across the season and spray intervals need reliable surface protection. It possesses excellent residual activity and rainfastness.

Mode of Action

Kresoxim-methyl is a QoI fungicide that blocks fungal respiration. It binds to the Qo site and interrupts electron transfer in fungal cells, which stops normal energy production. This respiration-inhibiting action is the main technical reason it is used in foliar disease programs.

Because it belongs to FRAC Group 11, resistance management is essential. FRAC states that QoI fungicides share cross-resistance concerns within the group, so they should be used in rotation with fungicides that have different modes of action.

Target Diseases

Kresoxim-Methyl 50% WDG is mainly used for the following disease directions in registered crops:

  • Apple scab
  • Powdery mildew
  • Gummy stem blight
  • Black rot in grape
  • Phomopsis cane and leaf spot
  • Downy mildew in grape
  • Leaf and nut scab in pecan
  • Suppression of cedar apple rust, quince rust, and Botrytis bunch rot in specific registered uses

These disease directions are supported directly by the EPA label for Kresoxim-methyl 50 WDG Fungicide.

Suitable Crops and Application Areas

Kresoxim-Methyl 50% WDG is suitable for registered crop programs that include:

  • Apple
  • Pear and other specified pome fruit
  • Grape
  • Cucurbit vegetables
  • Pecan
  • Greenhouse ornamentals and certain non-residential landscape uses in some registrations

This crop-use pattern gives the product a more specific disease-management role than a generic foliar fungicide description. It fits crop systems where scab, mildew, grape fruit-and-foliage diseases, and cucurbit disease pressure are central concerns.

Application Guidance

Kresoxim-Methyl 50% WDG should be used according to the approved local label. It is intended for foliar spray programs, and the strongest use direction is where disease timing is tied to recurring infection pressure on leaves, shoots, fruit, and green tissues.

In general, this formulation is suitable when:

  • the crop faces scab pressure
  • the crop faces powdery mildew pressure
  • the disease program includes grape foliar and fruit diseases
  • the disease program includes gummy stem blight in cucurbits
  • the fungicide program requires a FRAC 11 QoI fungicide with residual activity

Final dosage, interval, and crop-specific directions should follow the local approved label.

Formulation Features

WDG means water-dispersible granule. EPA labels for kresoxim-methyl identify this formulation directly as a 50% water-dispersible granule (WDG), and CIPAC recognizes WG as the standard formulation code for water dispersible granule.

This means Kresoxim-Methyl 50% WDG is a dry granule formulation designed to disperse in water before spraying. Compared with a more generic dry formulation description, the key point here is the granule-based water dispersion route, which is the defining feature of this product format.

Product Advantages

Kresoxim-Methyl 50% WDG stands out for these reasons:

  • FRAC 11 QoI fungicide profile
  • Respiration-inhibiting mode of action
  • Recognized use in apple scab and powdery mildew programs
  • Strong fit for grape and cucurbit foliar disease programs
  • Good residual activity
  • Good rainfastness
  • Water-dispersible granule formulation

Its main technical strength is the combination of a well-defined QoI fungicide identity with a clear crop-disease use pattern and a residual foliar protection profile.

Safety and Use Precautions

Kresoxim-Methyl 50% WDG should be handled carefully during mixing, spraying, storage, and transport. The product may cause injury to certain sensitive cherry varieties and some Asian pear varieties, and it also requires careful cleaning of spray equipment before use on sensitive crops.

Important points include:

  • follow the approved local label
  • avoid repeated exclusive use without rotation
  • wear proper protective clothing, gloves, and face protection
  • avoid off-target movement to sensitive crops
  • rinse spray equipment thoroughly when label directions require it

These precautions are especially important because Group 11 fungicides require stewardship and some crops may show sensitivity to kresoxim-methyl exposure.

Storage and Transport

Store Kresoxim-Methyl 50% WDG in the original sealed package in a cool, dry, and well-ventilated place. Because this is a water-dispersible granule formulation, packaging should be protected from moisture, water exposure, bag damage, and rough handling so the granules remain stable and disperse properly before use.

FAQ

What is Kresoxim-Methyl 50% WDG mainly used for?

It is mainly used for apple scab, powdery mildew, cucurbit gummy stem blight, grape diseases, and pecan scab in registered crop programs.

What fungicide group does Kresoxim-Methyl belong to?

Kresoxim-methyl belongs to the QoI fungicides in FRAC Group 11.

What is a key strength of the 50% WDG formulation?

A key strength is that it is a water-dispersible granule with good residual activity and good rainfastness in registered uses.

Which crop-disease programs are most relevant to this product?

The most relevant directions include apple and pear scab, grape foliar diseases, cucurbit powdery mildew and gummy stem blight, and pecan scab.

How should Kresoxim-Methyl 50% WDG be used?

It should be used according to the approved local label, with attention to crop registration, disease timing, resistance-management rotation, and any sensitive-crop precautions.

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