Fenobucarb 20% + Buprofezin 5% EC – Dual-Mode Insecticide for Rice & Vegetable Pests

Fenobucarb 20% + Buprofezin 5% EC is an innovative emulsifiable concentrate combining contact-kill and insect growth regulator (IGR) actions for comprehensive pest management. This unique formulation effectively controls both adult populations and immature stages of key pests in rice, vegetables, and tea crops.

Technical Specifications

Parameter	Specification
Formulation Type	Emulsifiable Concentrate (EC)
Active Ingredients	Fenobucarb 20% + Buprofezin 5%
Chemical Classes	Carbamate + Thiadiazine
Mode of Action	Contact action + Chitin synthesis inhibition
Target Pest Stages	Adults, nymphs, larvae
pH Range	6.0-8.0
Flash Point	>70°C
Shelf Life	2 years in original packaging

Dual-Action Mechanism

Fenobucarb (20%)

Type: Carbamate insecticide
MOA: Reversible acetylcholinesterase inhibitor
Key Features:
- Rapid knockdown of adult insects
- Contact and stomach action
- Effective within 30 minutes of application
- Low phytotoxicity risk

Buprofezin (5%)

Type: Thiadiazine insect growth regulator
MOA: Inhibits chitin biosynthesis
Key Features:
- Prevents molting in nymphs/larvae
- Sterilizes adult females
- Long residual activity (14-21 days)
- Excellent rainfastness

Target Pests & Crops

Major Controlled Pests

Rice:

Brown planthopper (Nilaparvata lugens)
Whitebacked planthopper (Sogatella furcifera)
Green leafhopper (Nephotettix spp.)

Vegetables:

Whiteflies (Bemisia tabaci)
Leafhoppers (Amrasca spp.)
Mealybugs (Pseudococcus spp.)

Tea:

Tea green leafhopper (Empoasca onukii)
Tea thrips (Scirtothrips dorsalis)

Application Guidelines

Crop	Pest	Dosage	Spray Volume	PHI (Days)
Rice	Planthoppers	750-1000 mL/ha	300-400 L/ha	14
Vegetables	Whiteflies	500-750 mL/ha	500-600 L/ha	7
Tea	Leafhoppers	600-800 mL/ha	1000 L/ha	10

Best Practices:

Apply at first sign of nymph infestation
Ensure thorough coverage of both leaf surfaces
Avoid application during peak sunlight hours
Rotate with neonicotinoids for resistance management

Performance Advantages

Comparison with Alternatives

Feature	Fenobucarb+Buprofezin	Pyrethroids	Neonicotinoids
Knockdown Speed	Fast (1-2 hrs)	Very Fast	Moderate
Nymph Control	Excellent	Poor	Good
Residual Activity	14-21 days	5-7 days	10-14 days
Resistance Risk	Medium	High	High
Bee Safety	Toxic (RT)	Highly Toxic	Highly Toxic

Safety & Compliance

Precautionary Statements:

WHO Class II (Moderately hazardous)
Restricted re-entry interval: 24 hours
Aquatic toxicity: LC50 (96h) for fish < 0.1 mg/L
Not for use in drinking water catchments

Protective Measures:

Mandatory PPE: Gloves, goggles, respirator
Do not apply when wind speed > 10 km/h
Buffer zones: 50m from water bodies

Resistance Management

Maximum 2 applications per season
Alternate with chloronicotinyl or diamide insecticides
Combine with biological controls (e.g., Anagrus wasps for BPH)
Monitor pest populations with yellow sticky traps

Packaging Options

100mL, 250mL (smallholder packs)
1L, 5L (commercial farming)
20L drums (plantation use)

FAQs

Q: Can this control resistant BPH populations?
A: Yes, the dual MOA provides good control of populations resistant to imidacloprid or pymetrozine.

Q: Is it compatible with fungicides?
A: Compatible with most common fungicides except copper-based products. Always conduct jar test first.

Q: What’s the optimal application interval?
A: 10-14 days depending on pest pressure.