Quizalofop-p-ethyl

Pure product is white powder cry stal. m.p.90.5 ～ 91.6℃ , vapor pressure 9.33×10-5Pa(20℃ ), b.p.220℃ /26.7Pa. soluble in acetone, xylene, ethanol, hexane at 20℃ , solubility in water is 0.3mg/L. Stable in storage under normal conditions. Industrial product is light brown powder solid, m.p. 89 ～ 90℃ .

Post-bud herbicide in dry field, suitable for controlling gramineae weeds in broad-leaved crop fields such as soybean, peanut, cotton, potato, mung bean, watermelon, rape, etc

Quizalofop-p-ethyl is a selective, post-emergent herbicide used to control annual and perennial grass weeds in broadleaf crops. It belongs to the aryloxyphenoxypropionate (AOPP) family, commonly referred to as "fop" herbicides. This herbicide is widely valued for its effectiveness and crop safety, helping farmers achieve weed-free fields and improved yields.

Key Features

1. Selective Control: Targets grass weeds without affecting broadleaf crops.

2. Post-Emergent Action: Effective against actively growing weeds.

3. Systemic Movement: Translocates to the roots and growing points for complete control.

4. Long-Lasting Effect: Provides durable weed management with proper application.

Applications

Crops Treated

• Soybeans

• Cotton

• Canola

• Vegetables

• Orchards and Vineyards

Weeds Controlled

• Barnyard grass (Echinochloa crus-galli)

• Foxtails (Setaria spp.)

• Crabgrass (Digitaria spp.)

• Wild oats (Avena fatua)

• Johnsongrass (Sorghum halepense)

Mechanism of Action

Quizalofop-p-ethyl inhibits the enzyme acetyl-CoA carboxylase (ACCase), which is crucial for fatty acid synthesis in grasses. This inhibition disrupts cell membrane production, causing the weeds to wither and die. Its systemic action ensures that the herbicide reaches all parts of the plant, including underground structures like roots and rhizomes.

Advantages

1. Highly Selective: Protects broadleaf crops while eliminating grass weeds.

2. Systemic Action: Ensures thorough weed control from leaves to roots.

3. Flexible Application: Effective at various stages of weed growth.

4. Improved Crop Health: Reduces competition for nutrients, water, and sunlight.

Safety and Environmental Considerations

Handling and Storage

• Use appropriate personal protective equipment (PPE), including gloves, goggles, and long-sleeved clothing.

• Store in a cool, dry, and secure location away from food, feed, and water.

Environmental Impact

• Aquatic Toxicity: Avoid application near water bodies to protect aquatic life.

• Soil Behavior: Degrades over time, reducing the risk of long-term environmental impact.

• Non-Target Safety: Minimal effect on non-grass species and wildlife when used as directed.

Regulatory Compliance

• Approved for use under specific regulations in many countries. Always follow local guidelines to ensure safe and effective application.

Limitations

• Grass-Specific: Ineffective against broadleaf weeds and sedges.

• Resistance Risk: Overuse can lead to resistance in certain weed species.

• Weather Dependency: Requires optimal environmental conditions for maximum effectiveness.

Conclusion

Quizalofop-p-ethyl is a powerful herbicide for controlling grass weeds in broadleaf crop fields. Its selective action, systemic activity, and compatibility with various crops make it an essential tool for modern agriculture. Proper handling, application, and adherence to safety guidelines ensure effective weed management while minimizing environmental and health risks.