Pyraclostrobin: Enhancing Crop Protection and Yield

Sep 21, 2023

In agriculture, the importance of effective pest management cannot be overstated. Fungi, in particular, pose a major threat to crop health and productivity, causing huge economic losses to farmers. In this regard, fungicides have become an important tool in the hands of growers.

Among these fungicides, pyraclostrobin stands out as a special solution known for its broad-spectrum control and dramatic effects. This article takes an in-depth look at the mode of action, benefits and applications of pyraclostrobin, illustrating its role in revolutionizing crop protection practices.

Identification of Pyraclostrobin

Identification of Pyraclostrobin

  • Common name: pyraclostrobin
  • IUPAC name: methyl N-{2-[1-(4-chlorophenyl)-1H-pyrazol-3-yloxymethyl]phenyl}(N-methoxy)carbamate
  • Chemical Abstracts name: methyl [2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]methoxycarbamate
  • CAS RN: [175013-18-0]
  • Mol. wt.: 387.8
  • M.f. : C19H18ClNO4
  • Form: White or light beige crystalline solid.
  • M.p.: 63.7-65.2 °C
  • Solubility In water: 1.9 mg/l (20 °C).
  • Stability Stable >30 d (pH 5-7, 25 °C).


How Does Pyraclostrobin Work?

Pyraclostrobin is classified as a strobilurin fungicide. Its mechanism of action involves inhibiting mitochondrial respiration, which effectively fights against fungal pathogens and ultimately leads to their demise. This compound demonstrates its efficacy in combatting these harmful microorganisms.

Pyraclostrobin is approved for use in numerous countries globally and is extensively utilized in the agricultural sector to safeguard various crops, such as fruits, vegetables, cereals, and legumes, against detrimental fungal infections. Its systemic properties facilitate effective movement within the plant, offering enduring defense against foliar and soil-borne diseases.

The Benefits of Pyraclostrobin

Broad-Spectrum Control

One of the key advantages of pyraclostrobin is its wide-ranging efficacy against diverse fungal pathogens. It effectively combats diseases caused by ascomycetes, basidiomycetes, and some oomycetes, offering a comprehensive protective shield to crops. This broad-spectrum control allows farmers to address various diseases with a single, reliable product.

Translaminar Movement

Another remarkable feature of pyraclostrobin is its ability to penetrate plant tissues and exhibit translaminar mobility. This enables it to move through the leaf structures, reaching the underside and inner layers, where infection often occurs. By doing so, pyraclostrobin extends its protective effects to hidden areas of the plants, optimizing disease control.


The rainfastness of a fungicide is vital for ensuring its durability and efficacy under various weather conditions. Pyraclostrobin excels in this aspect, as it adheres strongly to plant surfaces, exhibiting excellent rainfastness. This attribute ensures that the protection remains intact even after rainfall or irrigation, enhancing the product’s efficacy and reliability.

Preventative and Curative Action

Pyraclostrobin possesses both preventive and curative properties, making it an indispensable tool for the management of current infections and the successful prevention of new outbreaks. When used as a preventative measure, it creates a protective shield on plant surfaces, inhibiting the entry and establishment of pathogens. In its curative capacity, pyraclostrobin disrupts pathogen growth and hinders disease advancement by interfering with energy production in fungal cells.

Resistance Management

Effective resistance management is indispensable in maintaining the long-term efficacy of fungicides. Pyraclostrobin’s mode of action differs from most other fungicides, reducing the likelihood of cross-resistance with other chemical compounds. By incorporating pyraclostrobin into an integrated pest management (IPM) strategy, farmers can effectively combat fungal diseases while mitigating the risk of resistance development.

How to effectively use Pyraclostrobin in crop protection?

Pyraclostrobin is an effective fungicide used in crop protection to control a variety of diseases. When used correctly, it can help protect crops from harmful pathogens and increase overall yields.

First, it is crucial to read and follow the instructions provided by the manufacturer. Following these guidelines ensures correct and safe use of the product.

Before using pyraclostrobin, it is important to correctly identify the target pathogen. Different diseases require different treatments, and using pyraclostrobin on the wrong disease may not have the desired effect.

When using pyraclostrobin, timing is key. This product is most effective when used prophylactically before symptoms of disease appear. By applying pyraclostrobin early in the growing season or at the first signs of disease, you can inhibit the growth of pathogens and protect your crops.

When using pyraclostrobin, make sure to cover plant leaves thoroughly. This can be achieved with proper spraying techniques and equipment. Use a sprayer with the appropriate nozzle and pressure to ensure even product distribution. Additionally, weather conditions must be taken into consideration during construction. Avoid spraying during periods of high winds or heavy rain as this may result in poor coverage and reduced efficacy.

The Applications of Pyraclostrobin


Difenoconazole as a mitochondrial respiratory inhibitor, inhibits cell wall sterol biosynthesis and has protective, therapeutic and leaf permeation effects. Pyraclostrobin+Difenoconazole has a better control effect on anthracnose. Apply the mixture before or at the beginning of citrus anthracnose, and spray until leaves are slightly dripping.


Pyraclostrobin + Boscalid

This combination is used in many crops, including pome fruits (apples, pears), grapes, and vegetables, to control fungal diseases such as powdery mildew, Botrytis fruit rot, and downy mildew.

Pyraclostrobin + Boscalid

Pyraclostrobin + Fluxapyroxad

This mixture is primarily used in cereals, including wheat and barley, to control various foliar diseases like rust, leaf spot, and stripe rust.

Pyraclostrobin + Fluxapyroxad

Pyraclostrobin + Metiram

This combination is used in crops like potatoes, tomatoes, and stone fruits to control fungal diseases like early blight, late blight, and Alternaria fruit rot.

Pyraclostrobin + Metiram

Environmental Considerations

In addition to its impressive efficacy, pyraclostrobin demonstrates good environmental compatibility. It has a favorable toxicological and environmental profile, with low toxicity to mammals, birds, and bees when used according to recommended guidelines.

However, responsible use, adherence to label instructions, and integration within sustainable agricultural practices remain imperative to minimize any potential environmental impacts.


With its broad-spectrum control, preventative and curative action, translaminar movement, rainfastness, and efficacy in resistance management, Pyraclostrobin has become a trusted companion for growers worldwide.

By incorporating pyraclostrobin into their pest management strategies, farmers can ensure healthier crops, improved yields, and ultimately, a more sustainable and resilient agricultural system.

If you would like to discuss more about this chemical, please feel free to contact us.