Product Introduction
Cyhalofop-butyl 10% EW is applied for post-emergence control of Leptochloa chinensis (Chinese sprangletop), Echinochloa crus-galli (barnyardgrass), Paspalum distichum (knotgrass), and other grass weeds in paddy fields through foliar application. The herbicide is absorbed via leaves and stems, translocated through the phloem, and accumulates in the meristematic tissues of weeds, disrupting cell division and growth processes. This mechanism effectively achieves herbicidal activity while maintaining crop safety for rice at recommended dosages.
Scope Of Application And Usage Method
| Crop/Site | Target Weed | Dosage (Formulation/mu) | Application Method |
|---|---|---|---|
| Paddy fields (direct-seeded rice) | Leptochloa chinensis (Chinese sprangletop) | 50-70 mL/mu | Foliar spray |
1. Application Parameters
Target Growth Stages:
Barnyardgrass (Echinochloa crus-galli): 1.5-2.5 leaf stage
Chinese sprangletop (Leptochloa chinensis): 2-3 leaf stage
Application Method: Foliar spray at 20-30 kg water per mu (spray volume).
2. Water Management Protocol
Pre-treatment: Drain fields to expose ≥2/3 of weed foliage above water surface.
Post-treatment: Refill with 3-5 cm shallow water layer within 24-72 hours after application; maintain this water depth for 5-7 days before resuming normal irrigation.
Key Attributes
|
Product Name |
Cyhalofop-butyl 10% EW |
|
Application |
Herbicide |
|
CAS NO. |
122008-85-9 |
|
MF |
C20H20FNO4 |
|
Label |
Customized |
|
Shelf Life |
2 Years |
Safety Precautions
1.Application Frequency:
Limited to 1 application per crop season to prevent resistance development.
2.Tank-Mixing Precautions:
May exhibit antagonistic effects when mixed with broadleaf herbicides; under drought conditions, approved higher dosage rates are permissible.
3.Aquatic Toxicity:
Highly toxic to fish and other aquatic organisms; avoid application near aquaculture zones, ponds, or waterways; prohibit equipment rinsing in water bodies.
4.Personal Protective Equipment (PPE):
Wear protective clothing, gloves, and avoid inhalation during application; refrain from eating, drinking, or smoking until decontamination is completed.
5.Special Populations:
Pregnant or lactating individuals should avoid direct contact with the product.
6.Container Disposal:
Empty containers must be triple-rinsed and crushed; never repurpose or discard indiscriminately.
7.Spray Drift Mitigation:
Use low-drift nozzles and avoid applications under windy conditions to prevent off-target damage to adjacent crops.
8.Restricted Zones:
Prohibited in rice-shrimp polyculture systems; post-application drainage must not discharge directly into aquatic ecosystems.
Avoid use in areas with active biological control agents (e.g., Trichogramma wasps).
First Aid Measures for Poisoning
1.Exposure Effects:
Skin/Eye Irritation: Causes irritation upon contact with skin or eyes.
2.Inhalation:
Immediately move the patient to fresh air; administer oxygen if breathing is difficult.
3.Skin/Eye Contact:
Skin: Rinse thoroughly with copious water for ≥15 minutes; remove contaminated clothing.
Eyes: Flush with running water or saline for ≥15 minutes; lift eyelids during rinsing.
4.Ingestion:
Rinse mouth immediately with large volumes of water; do not induce vomiting. Transport the patient to a medical facility with the product label for symptomatic treatment.
5.Antidote:
No specific antidote is available; manage symptoms based on clinical presentation.
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