Arrow-Thiamethoxam 25% WG
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Arrow Insecticide (Thiamethoxam 25% WG) by IIL | Complete Crop Protection Guide
The ultimate systemic solution for sucking pests, offering broad-spectrum control and enhanced crop vigor.
Arrow (Thiamethoxam 25% WG) is a second-generation neonicotinoid insecticide manufactured by Insecticides (India) Limited. It is specifically designed to combat the rising threat of sucking pests like Aphids, Jassids, Whiteflies, and BPH in Indian agriculture. Unlike older sprays, Arrow works from the inside out, protecting your crop against pests and the viral diseases they transmit.
Best For: Rice (Paddy), Cotton, Vegetables, and Mango growers looking for rapid, rainfast, and long-lasting pest control.
Why Choose This Product? Key Benefits
- ⏱️Rapid "Stop-Feeding" Action: Pests stop damaging your crop almost immediately after contact or ingestion, preventing further yield loss and virus transmission.
- 🛡️Dual-Action Systemicity: Arrow moves upwards (Acropetal) to protect new leaves and penetrates leaf tissues (Translaminar) to kill pests hiding underneath.
- ⏳Long-Lasting Residual Control: Provides extended protection (up to 21 days for foliar sprays), reducing the need for frequent re-spraying.
- 🌧️Excellent Rainfastness: The chemical is absorbed into the plant within 2 to 3 hours, making it effective even during the monsoon season.
- 🌿The "Vigor Effect": Beyond pest control, Arrow stimulates root growth and chlorophyll retention, resulting in greener, healthier plants and higher yields.
Technical Specifications
[Image of Thiamethoxam chemical structure]| Parameter | Details |
|---|---|
| Brand Name | Arrow |
| Technical Name | Thiamethoxam 25% WG |
| IRAC MoA Code | Group 4A (Neonicotinoid) |
| Chemical Group | Thianicotinyl |
| Formulation | Water Dispersible Granules (Dust-free, Solvent-free) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Arrow works by targeting the insect's central nervous system. The active ingredient, Thiamethoxam ($C_8H_{10}ClN_5O_3S$), mimics acetylcholine, a natural neurotransmitter.
- Binding: The molecule binds irreversibly to the Nicotinic Acetylcholine Receptors (nAChR) in the insect's nerves.
- Hyperexcitation: Unlike natural transmitters, it cannot be broken down by enzymes. This keeps the nerve channels permanently open ($Na^+$ influx).
- Paralysis & Elimination: This causes tremors and loss of coordination. The pest stops feeding instantly and dies within 24–48 hours.
Note: This systemic action ensures that even pests hiding inside curled leaves or at the base of the stem are controlled effectively.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Paddy) | Stem Borer, Gall Midge, Leaf Folder, Brown Plant Hopper (BPH), WBPH, GLH, Thrips |
| Cotton | Jassids, Aphids, Thrips, Whiteflies |
| Vegetables (Okra, Tomato, Brinjal) | Jassids, Aphids, Whiteflies (Vector for Leaf Curl Virus) |
| Potato | Aphids (Foliar spray or Soil Drench) |
| Mango, Wheat, Mustard | Mango Hoppers, Wheat Aphids, Mustard Aphids |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Arrow comes in granular form, so dosages are in grams (g).
Dosage per Acre, Water Volume, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Paddy) | 40 - 80 g | 200 L | 0.2 - 0.4 g | 14 |
| Cotton | 40 - 80 g | 200 - 300 L | 0.2 - 0.3 g | 21 |
| Vegetables (Okra, Tomato, Brinjal) | 40 - 80 g | 200 L | 0.2 - 0.4 g | 5 |
| Mango (Hoppers) | 40 g | High Volume | 0.1 g | 30 |
| Mustard | 20 - 40 g | 200 - 400 L | 0.1 - 0.2 g | 21 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. *For Soil Drench in Potato/Tomato, refer to specific labels as dosages are higher.
How to Apply: Best Practices
- Timing: Apply as soon as pest population reaches the Economic Threshold Level (ETL). Avoid spraying during peak bee activity (mid-day).
- Mixing: Pre-mix the required granules in a small quantity of water to form a slurry before adding to the main tank. It dissolves easily without dust.
- Coverage: Use a Hollow Cone Nozzle for foliar sprays to ensure fine droplets penetrate the canopy. For rice, ensure the spray reaches the base of the hills for BPH control.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use near water bodies.
Frequently Asked Questions
1. Is Arrow effective against Brown Plant Hopper (BPH) in rice?
Yes, Arrow is highly effective against BPH. Its systemic action allows the chemical to move to the base of the plant where BPH feeds, providing excellent control.
2. Can I mix Arrow with other pesticides or fungicides?
Yes, Arrow is compatible with most neutral or slightly acidic insecticides and fungicides. However, do not mix with alkaline substances like Bordeaux mixture or Lime Sulphur.
3. What if it rains after spraying?
Arrow is rainfast within 2 to 3 hours. Once absorbed by the leaf, it cannot be washed away, ensuring your investment is safe even in the rainy season.
4. Is this product safe for honeybees?
Thiamethoxam is toxic to bees. To protect pollinators, avoid spraying during flowering stages or apply only in the late evening when bees are not foraging.
5. Can Arrow be used for soil drenching?
Yes, primarily for crops like Potato and Tomato. Soil drenching provides longer protection (40-60 days) compared to foliar sprays.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application. Export Warning: Farmers growing crops for export to the EU should check specific MRL requirements before use.