IIL Mihir Pymetrozine 50% WG Insecticide – Controls BPH, Whiteflies & Sucking Pests in Rice, Cotton & Vegetables

Key Benefits

• Immediate feeding stop: Pests stop sucking plant sap within minutes of contact, preventing further crop damage instantly.
• Unique starvation technology: Unlike nerve poisons, Mihir paralyzes the pest's mouthparts so it cannot feed. The insect dies of starvation in 2-4 days without causing additional harm.
• Virus transmission control: By stopping feeding instantly, it prevents pests like whiteflies and aphids from spreading deadly viruses (Leaf Curl, etc.) to healthy plants.
• Systemic & translaminar action: The product absorbs into the plant and moves to new growth and hidden areas, protecting parts of the plant that spray may not directly hit.
• Excellent rainfastness: Once dried on the leaf (2-4 hours), the spray binds firmly and is not washed away by rain — ideal for monsoon-season use.
• Safe for beneficial insects: Highly selective chemistry that targets harmful pests while being relatively safe for spiders, ladybird beetles, and bees (when not sprayed during active foraging).
• Breaks pest resistance: Works effectively on pests that have developed resistance to older chemistries like Imidacloprid.

How It Works

Mihir works through a unique mechanism that is completely different from traditional nerve-poison insecticides. The active ingredient Pymetrozine belongs to the Pyridine Azomethine chemical group and acts as a Chordotonal Organ Modulator (IRAC Group 9B).

When the pest comes into contact with the spray or ingests treated plant sap, the chemical targets the insect's chordotonal organs — specialized sensory receptors located in their legs and antennae that control balance, coordination, and feeding behavior. This creates a "straitjacket" effect: the insect's mouthparts (stylet) become paralyzed, and it physically cannot insert its needle into the plant to suck sap.

Although the pest may remain on the leaf for 2-4 days after contact, it is completely harmless during this time because it cannot feed. The insect eventually dies of starvation and dehydration. This mode of action also means that virus transmission is stopped immediately — since the pest cannot pierce the plant, it cannot inject or acquire viruses. The systemic nature of Mihir ensures that even new plant growth and hidden parts of the plant are protected, as the chemical moves through the plant's vascular system (xylem mobility).

Technical Specifications

Parameter	Details
Brand Name	Mihir
Manufacturer	Insecticides (India) Limited
Technical Name	Pymetrozine 50% WG
Formulation	Water Dispersible Granules (WG)
IRAC Mode of Action Code	Group 9B (Chordotonal Organ Modulator)
Chemical Group	Pyridine Azomethine
Toxicity Label	Blue Triangle (Moderately Toxic)
HSN Code	38089199
Available Pack Sizes	120 g, 250 g, 500 g, 1 kg

Recommended Dosage & Application

Crop	Target Pest(s)	Dose (g/Acre)	Water (L/Acre)	Dose (g/Litre)	PHI (Days)
Rice (Paddy)	Brown Plant Hopper (BPH), White Backed Plant Hopper (WBPH)	120 - 150 g	200 L	0.6 - 0.75 g	19
Cotton	Aphids, Whiteflies	120 - 150 g	200 L	0.6 - 0.75 g	20 - 25
Vegetables (Tomato, Chili, Okra)	Whiteflies, Aphids	80 - 120 g	200 L	0.4 - 0.6 g	7 - 14

Note: PHI = Pre-Harvest Interval — the minimum number of days to wait between the last spray and harvesting. Maximum two applications per crop season.

When to Use

Apply Mihir at the Economic Threshold Level (ETL) for best results. For Rice, this means spraying when you see 5-10 hoppers per hill. Do not wait for visible damage like "Hopper Burn" (browning of the crop) to start — by then, significant yield loss has already occurred.

For Cotton, apply at the first signs of whitefly or aphid infestation to prevent "Sticky Cotton" issues. For Vegetables, early application at the first appearance of whiteflies or aphids helps prevent viral disease transmission. The product is most effective when pest populations are still low to moderate. Avoid spraying during peak heat hours or when bees are actively foraging. Mihir is rainfast within 2-4 hours of application, making it suitable for use even in uncertain weather conditions.

Step by Step Usage Instructions

1. Check pest level: Scout your field and confirm that pest populations have reached the ETL (e.g., 5-10 hoppers per hill in rice) before spraying.
2. Prepare the spray solution: Fill the spray tank with half the required water (about 100 litres per acre).
3. Pre-mix the granules: In a separate small container, mix the required dose of Mihir granules with a little water to make a smooth slurry or solution.
4. Add to tank: Pour the pre-mixed solution into the spray tank while stirring continuously.
5. Top up water: Add the remaining water to reach the full recommended volume (200 litres per acre). Stir well to ensure uniform mixing.
6. Use correct nozzle: Fit a Hollow Cone nozzle for best coverage and penetration.
7. Spray correctly: For Rice, direct the spray nozzle toward the base of the plant (stem) where hoppers hide. Ensure thorough coverage of the lower plant parts.
8. Clean up: Wash the spray tank and equipment thoroughly after use. Do not dispose of wash water near water bodies or ponds.

Compatibility

Mihir can be rotated or tank-mixed with knockdown agents like Dinotefuran or Buprofezin (IGR) for heavy infestations and resistance management. Always perform a small jar test to check physical compatibility before mixing with any new product. Do not mix with alkaline substances. Follow the correct mixing sequence: wettable powders first, then WG formulations, then liquids, and adjuvants last.

Precautions & Safety

• PPE: Always wear gloves, mask, and goggles while handling and spraying Mihir.
• During application: Avoid inhalation of spray mist. Do not eat, drink, or smoke while handling the product.
• After use: Wash hands, face, and exposed skin thoroughly with soap and water.
• Storage: Store in a cool, dry place away from food, feed, and drinking water. Keep out of reach of children and animals.
• Environmental safety: Pymetrozine is toxic to fish. Do not spray near aquaculture ponds, rivers, or water bodies. Do not wash spray equipment in water sources.
• Disposal: Do not reuse empty containers. Dispose of them safely as per local regulations.

Side Effects & Phytotoxicity

Mihir is highly selective and generally safe for the crop when used at recommended doses. It is relatively safe for beneficial insects like spiders, ladybird beetles, and bees (when not sprayed during active foraging hours). However, Pymetrozine is toxic to fish and aquatic organisms — take care to avoid spray drift or runoff into water bodies.

PHI / REI & Storage

Parameter	Details
PHI - Rice	19 days
PHI - Cotton	20 - 25 days
PHI - Vegetables	7 - 14 days
Rainfastness	2 - 4 hours after application
Maximum applications per season	2