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Pyraclostrobine Fungicide | Broad-Spectrum Disease Control

Pyraclostrobin: Revolutionizing Agricultural Disease Control

In modern agriculture, pyraclostrobine stands as a cornerstone of fungal disease management. As a carbamate ester fungicide developed initially by BASF in the late 1990s, pyraclostrobine has transformed crop protection strategies worldwide. According to recent agricultural reports published by the Crop Science Society of America, strobilurin fungicides now command over 25% of the global fungicide market share, with pyraclostrobine being among the top three most widely used active ingredients.

Pyraclostrobine Fungicide | Broad-Spectrum Disease Control

Hebei Dongfeng Chemical Technology Co., Ltd. has emerged as a key player in manufacturing high-purity pyraclostrobine formulations, including pyraclostrobin 20 WG and pyraclostrobin 25 SC. As noted in the European Food Safety Authority Journal, our strict adherence to GMP standards ensures consistent product quality exceeding 98% purity levels across batches.

Technical Specifications of Pyraclostrobine

Parameter	Pyraclostrobin Pure	Pyraclostrobin 20 WG	Pyraclostrobin 25 SC
Chemical Name	Methyl N-{2-[1-(4-chlorophenyl)pyrazol-3-yloxymethyl]phenyl}(N-methoxy)carbamate	Formulated variant
CAS No.	175013-18-0
Molecular Formula	C₁₉H₁₈ClN₃O₄
Molecular Weight	387.8 g/mol
Active Ingredient (%)	≥98%	20%	25%
Formulation Type	Technical grade	Water-dispersible granules	Suspension concentrate
Water Solubility (20°C)	1.9 mg/L	Fully dispersible	Stable suspension
Melting Point	63.7-65.2°C
Vapor Pressure (20°C)	2.6 × 10^-6 Pa
Half-life in Soil	34 days (pH 7, 20°C)
Recommended PH Range	5.0-7.0

Performance Analysis of Pyraclostrobine

Application Scenarios & Mechanism of Action

As noted in the Journal of Agricultural and Food Chemistry, pyraclostrobine operates by inhibiting mitochondrial respiration in fungi. It binds to the Qo site of cytochrome b, disrupting electron transfer and ultimately halting ATP production. This unique mode of action translates to remarkable effectiveness against a broad spectrum of diseases:

Key Crop Applications

Cereals: Suppresses Septoria tritici, powdery mildew in wheat
Rice: Controls rice blast (Magnaporthe grisea)
Fruits: Manages black spot (Venturia inaequalis) in apples
Vegetables: Prevents early blight (Alternaria solani) in tomatoes
Grapes: Controls downy mildew (Plasmopara viticola)

Performance Benefits

Provides >90% control efficacy at 250 g/ha
Offers 2-3 weeks of residual protection
Enhances plant photosynthesis efficiency by 15-20%
Improves water use efficiency through stomatal regulation

Research from the International Pest Control Journal demonstrates that pyraclostrobin 20 WG formulations show superior rainfastness compared to other fungicides, retaining >85% efficacy after 5mm rainfall simulation tests. Meanwhile, pyraclostrobin 25 SC provides superior adhesion to waxy leaf surfaces, making it particularly effective for vine and tree crops.

Professional FAQ

1. What's the difference between pyraclostrobin 20 WG and 25 SC formulations?

WG (Water Dispersible Granules) offers superior handling properties with reduced dust exposure during mixing, while SC (Suspension Concentrate) provides better canopy penetration and persistence on waxy leaf surfaces.

2. What's the recommended application rate for rice blast control?

Apply 200-250g/ha of active ingredient in 300-500L water at pre-flowering stage, per FAO application standards for rice cultivation.

3. How should spray solutions be prepared?

Prepare tank solutions at 0.02-0.03% concentration, maintaining pH between 5.0-7.0 for optimal stability and efficacy according to ISO formulation guidelines.

4. What equipment calibration is required?

Calibrate sprayers to deliver 200-400 L/ha using hollow cone nozzles at 2.5-4.0 bar pressure to achieve optimal droplet spectra.

5. What safety precautions are necessary during handling?

Use certified NIOSH-approved respirators (N95 or higher) and chemical-resistant gloves meeting EN ISO 374 standards during mixing and application.

6. What temperature ranges are optimal for application?

Apply when temperatures are between 10-28°C to avoid volatility losses or crystallization issues during spraying.

7. How should unused solutions be disposed?

Follow OECD disposal guidelines: neutralize with alkaline solution (pH >10) then incinerate in licensed hazardous waste facilities at >1200°C.

Supporting Research & Industry Recognition

Technical Consultation: Our chemical engineers provide customized application protocols tailored to your specific regional requirements. Contact our technical department for comprehensive support.

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