Weed management is crucial for maintaining healthy crop growth and ensuring high yields. One of the most effective herbicides used for post-emergence weed control is Quizalofop Ethyl 10 EC. This selective herbicide targets grassy weeds in broadleaf crops, making it a valuable tool for farmers.
In this topic, we will explore the composition, mode of action, benefits, application methods, and safety precautions of Quizalofop Ethyl 10 EC.
What is Quizalofop Ethyl 10 EC?
Quizalofop Ethyl 10 EC is a systemic, post-emergence herbicide designed to control annual and perennial grasses in broadleaf crops. It belongs to the Aryloxyphenoxypropionate group of herbicides and works by inhibiting the growth of target weeds, ultimately leading to their death.
Composition and Formulation
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Active Ingredient: Quizalofop-P-Ethyl (10% EC)
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Formulation Type: Emulsifiable Concentrate (EC)
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Mode of Action: Systemic herbicide that translocates within the plant to inhibit enzyme activity, leading to weed control.
Mode of Action: How Does Quizalofop Ethyl 10 EC Work?
Quizalofop Ethyl 10 EC works by targeting the Acetyl-CoA Carboxylase (ACCase) enzyme, which is essential for lipid synthesis in grass weeds. Without this enzyme, the weeds cannot produce essential fatty acids, causing them to wither and die.
Key Features of Its Action
✔ Selective Herbicide – Targets grassy weeds while leaving broadleaf crops unharmed.
✔ Systemic Absorption – Moves within the plant, ensuring complete control.
✔ Post-Emergence Application – Effective against actively growing weeds.
Benefits of Using Quizalofop Ethyl 10 EC
1. Highly Effective on Grass Weeds
Quizalofop Ethyl 10 EC is specifically designed to control annual and perennial grassy weeds, including species like:
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Barnyard grass (Echinochloa crus-galli)
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Crabgrass (Digitaria sanguinalis)
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Goosegrass (Eleusine indica)
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Johnsongrass (Sorghum halepense)
2. Safe for Broadleaf Crops
This herbicide is highly selective and does not harm crops such as:
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Soybean
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Cotton
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Peanuts
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Vegetables
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Sunflower
3. Fast Absorption and Action
Within a few hours of application, the herbicide is absorbed and starts affecting the weeds, leading to visible symptoms within 7 to 14 days.
4. Rainfast and Long-Lasting Effect
After absorption, rainfall does not reduce its effectiveness. It provides long-term weed control, reducing the need for multiple applications.
5. Easy to Mix and Apply
The emulsifiable concentrate formulation ensures easy mixing and uniform application across the field.
Application Guidelines for Best Results
For optimal performance, proper application is essential. Here’s how to use Quizalofop Ethyl 10 EC effectively:
1. Recommended Dosage
The application rate depends on the crop and weed species. Typically:
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Soybean & Cotton: 50-100 ml per acre
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Vegetables & Sunflowers: 40-80 ml per acre
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Dilution Ratio: Mix with 200-300 liters of water per hectare
2. Timing of Application
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Apply when weeds are actively growing (2-5 leaf stage).
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Avoid spraying on stressed weeds due to drought, flooding, or mechanical damage.
3. Spraying Technique
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Use a knapsack sprayer or boom sprayer with a flat fan nozzle.
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Maintain uniform coverage but avoid over-spraying.
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Apply early in the morning or late in the afternoon for best absorption.
4. Mixing Instructions
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Fill the spray tank with half the required water.
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Add the measured dose of Quizalofop Ethyl 10 EC.
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Stir well and then add the remaining water.
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Avoid tank-mixing with other herbicides unless compatibility is confirmed.
Safety and Precautions
While Quizalofop Ethyl 10 EC is effective, safety measures must be followed to protect humans, animals, and the environment.
1. Protective Gear for Applicators
✔ Wear gloves, goggles, long-sleeved clothing, and a mask.
✔ Avoid inhaling or direct contact with the spray solution.
2. Environmental Safety
✔ Do not spray near water bodies or sensitive crops.
✔ Avoid application during strong winds to prevent drift.
✔ Follow proper disposal methods for empty containers.
3. Storage Precautions
✔ Store in a cool, dry place away from food and animal feed.
✔ Keep out of reach of children and pets.
Comparison with Other Herbicides
| Herbicide | Target Weeds | Selective or Non-Selective | Mode of Action | Application |
|---|---|---|---|---|
| Quizalofop Ethyl 10 EC | Grassy weeds | Selective | ACCase Inhibitor | Post-emergence |
| Glyphosate | Broad-spectrum | Non-selective | EPSP Synthase Inhibitor | Post-emergence |
| Paraquat | Broad-spectrum | Non-selective | Contact Herbicide | Post-emergence |
Common Questions About Quizalofop Ethyl 10 EC
1. Can I mix Quizalofop Ethyl 10 EC with other herbicides?
It is generally not recommended unless compatibility has been tested. Some combinations may reduce effectiveness.
2. How long does it take to see results?
Weeds stop growing within 48 hours, and visible symptoms appear within 7-14 days.
3. Is it safe for human health?
When used according to the recommended guidelines, it poses minimal risk. However, direct exposure should be avoided.
4. Can it be used in rainy conditions?
Once absorbed, rain does not affect its performance. However, avoid spraying just before rain to prevent runoff.
Quizalofop Ethyl 10 EC is an effective and reliable herbicide for controlling grassy weeds in broadleaf crops. Its systemic action, selectivity, and long-lasting effects make it a preferred choice for farmers. By following the recommended dosage, application methods, and safety precautions, users can maximize its benefits while ensuring environmental and human safety.
For those struggling with grass weed infestations, this herbicide is a valuable solution that enhances crop health and productivity.