Quizalofop P Ethyl Syngenta

Quizalofop P Ethyl Syngenta

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Quizalofop-P-Ethyl is a widely used herbicide known for its effectiveness in controlling grass weeds in broadleaf crops. Manufactured by Syngenta, this selective herbicide is trusted by farmers worldwide for its post-emergence weed control. It helps protect crops by targeting unwanted grasses without harming the main crop.

In this topic, we will explore what Quizalofop-P-Ethyl is, its benefits, mode of action, and how to use it effectively.

1. What is Quizalofop-P-Ethyl?

Definition and Chemical Composition

Quizalofop-P-Ethyl is a systemic herbicide belonging to the Aryloxyphenoxypropionate (FOP) group. It is primarily used to control annual and perennial grass weeds in crops like soybean, sunflower, cotton, and vegetables.

  • Chemical Name: (R)-2-[4-(6-chloroquinoxalin-2-yloxy)phenoxy]propionic acid ethyl ester

  • Mode of Action: Inhibits Acetyl-CoA Carboxylase (ACCase), an enzyme essential for fatty acid synthesis in grasses.

  • Formulation: Available as an emulsifiable concentrate (EC) for easy application.

2. Benefits of Using Quizalofop-P-Ethyl

1. Highly Selective for Broadleaf Crops

Unlike some herbicides, Quizalofop-P-Ethyl specifically targets grassy weeds while being safe for broadleaf crops. This makes it ideal for crops like soybeans, cotton, and canola.

2. Effective Against Tough Grass Weeds

It controls hard-to-kill grasses such as:

  • Barnyard grass (Echinochloa crus-galli)

  • Goosegrass (Eleusine indica)

  • Johnson grass (Sorghum halepense)

  • Crabgrass (Digitaria spp.)

3. Systemic Action for Long-Lasting Control

Once absorbed by the weed, Quizalofop-P-Ethyl moves systemically through the plant, stopping growth at the root level. This ensures long-term control.

4. Rainfast in a Few Hours

After application, this herbicide becomes rainfast within 2-3 hours, meaning rain won’t wash it away, ensuring consistent results.

5. Compatible with Many Crops

It is widely used in:

  • Soybeans

  • Sunflower

  • Canola

  • Sugar beets

  • Cotton

  • Vegetables (like onions and potatoes)

3. How Quizalofop-P-Ethyl Works

Mode of Action

Quizalofop-P-Ethyl works by blocking the Acetyl-CoA Carboxylase (ACCase) enzyme, which is essential for fatty acid synthesis in grassy weeds. Without fatty acids, the weed cannot grow and eventually dies.

Symptoms of Weed Control

After application, the following symptoms appear:

  1. Weed growth stops within 48 hours.

  2. Leaves turn yellow and wilt in 5-7 days.

  3. Complete weed death occurs within 2-3 weeks.

4. Application Guidelines

1. Recommended Dosage

The application rate depends on the weed species, crop type, and environmental conditions.

  • General dosage: 50-100 ml per acre

  • For resistant weeds: Up to 150 ml per acre

2. Best Time to Apply

For maximum effectiveness, apply when:

  • Grassy weeds are actively growing (2-4 leaf stage)

  • Weather is dry and sunny

  • No rain is expected for at least 3 hours

3. Mixing and Spraying Instructions

  • Fill the spray tank with half the required water.

  • Add the required amount of Quizalofop-P-Ethyl.

  • Stir well, then add the remaining water.

  • Use a flat fan or cone nozzle for uniform coverage.

4. Precautions While Applying

  • Do not spray during strong winds.

  • Avoid contact with non-target plants.

  • Use protective gloves and eyewear.

  • Do not apply near water bodies.

5. Compatibility with Other Herbicides

Quizalofop-P-Ethyl is often mixed with broadleaf herbicides for better weed control. However, always check compatibility before mixing with:

  • Glyphosate (for broad-spectrum weed control)

  • Imazethapyr (for additional broadleaf weed control)

  • Clethodim (for enhanced grass weed control)

6. Resistance Management

How to Prevent Herbicide Resistance?

Continuous use of the same herbicide can lead to resistance in weeds. To prevent this:

  • Rotate with different herbicide groups.

  • Use a combination of chemical and mechanical weed control.

  • Apply herbicides at the recommended dose to avoid survival of resistant weeds.

7. Environmental Impact and Safety Measures

1. Effect on Soil and Water

Quizalofop-P-Ethyl has low soil persistence, meaning it breaks down quickly and does not accumulate in the environment. However, avoid spraying near water sources to prevent contamination.

2. Safety for Humans and Animals

  • Low toxicity when used correctly.

  • Always wear protective clothing while handling.

  • Keep away from children and livestock.

8. Why Choose Quizalofop-P-Ethyl by Syngenta?

Quizalofop-P-Ethyl by Syngenta is a powerful, selective herbicide that effectively controls grass weeds in broadleaf crops. Its systemic action, rainfast properties, and compatibility make it a preferred choice for farmers worldwide.

By following proper application guidelines and resistance management strategies, farmers can achieve optimal weed control and maximize crop yields.