Kollar Insecticide (Ethiprole 10.7% + Pymetrozine 40% WG) - Crystal Crop Protection for BPH & WBPH Control in Paddy

Kollar Insecticide is a powerful dual-action solution from Crystal Crop Protection, specially developed for Indian paddy farmers facing severe attacks from Brown Plant Hopper (BPH) and White Backed Plant Hopper (WBPH). It contains two active ingredients — Ethiprole 10.7% and Pymetrozine 40% — formulated as Wettable Granules (WG). This combination was launched through a strategic alliance between Crystal Crop Protection and Bayer Crop Science, making it a trusted resistance-breaking tool for hopper management in rice.

What makes Kollar different is how it attacks the pest from two sides. Pymetrozine stops the insect from feeding almost immediately, while Ethiprole attacks the nervous system, causing paralysis and death within 24 to 72 hours. This dual mode of action makes it highly effective even against hoppers that have developed resistance to older chemicals like Imidacloprid or Acephate. The product is classified as moderately toxic (Blue/Yellow label) and is designed to be safer for beneficial insects like spiders and mirid bugs, helping maintain natural pest control in your field.

Kollar is primarily recommended for use in Paddy (Rice) to control Brown Plant Hopper (BPH) and White Backed Plant Hopper (WBPH). The recommended dose is 170 g per acre, mixed in 150 to 200 litres of water. The product has a Pre-Harvest Interval (PHI) of 26 to 27 days. Proper application timing and good spray coverage at the base of the plant are essential for best results, as hoppers typically stay near the water level on the lower stem.

Key Benefits

• Immediate stop-feeding action: Pests stop sucking plant sap within hours of application, preventing "hopper burn" and reducing the spread of viral diseases.
• Dual-mode resistance breaker: Two different active ingredients work together to kill hoppers that have become immune to older, single-action insecticides.
• Complete pest elimination in 1-3 days: The combination of starvation and nervous system shutdown ensures high mortality of nymphs and adults within 24 to 72 hours.
• Rainfast within 2-4 hours: The WG formulation is quickly absorbed by the plant, so light rain shortly after spraying does not reduce effectiveness.
• Safer for beneficial insects: Designed to be less harmful to natural predators like spiders and mirid bugs, helping prevent pest resurgence in the field.
• Long-lasting protection: Provides effective control for 2 to 3 weeks depending on pest pressure and weather conditions, reducing the need for frequent sprays.
• Dust-free formulation: The Wettable Granule (WG) form is easy to measure, mix, and apply with less dust exposure compared to powder formulations.

How It Works

Kollar uses a two-pronged attack strategy that targets the pest through completely different biological pathways, making it extremely difficult for hoppers to survive or develop resistance.

Step 1 — Immediate Starvation (Pymetrozine): When the pest comes into contact with or ingests Pymetrozine, it affects the insect's chordotonal organs — these are sensory organs responsible for balance, hearing, and proprioception (the insect's sense of its own body position). The insect becomes disoriented and confused. Most importantly, it physically cannot insert its mouthpart (stylet) into the plant tissue to feed. This means the pest stops damaging your crop within hours of spraying, even before it dies. This "anti-feeding" effect is critical because it immediately stops the spread of hopper burn and viral transmission.

Step 2 — Nervous System Shutdown (Ethiprole): While the pest is starving and disoriented, Ethiprole goes to work on its central nervous system. It blocks GABA-gated chloride channels in the insect's nerve cells. GABA (gamma-aminobutyric acid) is a neurotransmitter that normally inhibits nerve signals — think of it as the "brake" of the nervous system. When Ethiprole blocks these channels, the brake stops working. The insect's nerves fire uncontrollably, causing over-excitation, convulsions, and finally paralysis.

The combined result: The pest stops feeding immediately (saving your crop from further damage) and dies within 24 to 72 hours from a combination of starvation and nervous system failure. You may see some insects still sitting on the plant for a day or two after spraying, but they are no longer feeding and will eventually fall off and die.

Technical Specifications

Parameter	Details
Brand Name	Kollar
Manufacturer	Crystal Crop Protection Limited
Technical Content	Ethiprole 10.7% + Pymetrozine 40% WG
Formulation Type	Wettable Granules (WG)
IRAC Mode of Action Code	Group 2B (Ethiprole) + Group 9B (Pymetrozine)
Chemical Group	Phenylpyrazole + Pyridine Azomethine
Toxicity Label	Blue / Yellow Triangle (Moderately Toxic)
Classification	Chemical Insecticide
HSN Code	3808
GST Rate	18%

Recommended Dosage & Application

Important: Always follow the dose per acre for accurate results. Do not reduce or increase the dose without expert advice.

Crop	Target Pest	Dose (g/Acre)	Water (L/Acre)	Dose (g/Litre)	PHI (Days)
Paddy (Rice)	Brown Plant Hopper (BPH), White Backed Plant Hopper (WBPH)	170 g	150 - 200 L	~1.13 g	26 - 27

PHI (Pre-Harvest Interval): Minimum 26 to 27 days between last spray and harvesting.

When to Use

Timing is critical for getting the best results from Kollar. Apply the spray as soon as you notice the pest population crossing the economic threshold level — that is, when you see 5 to 10 hoppers per hill (a single paddy clump). Do not wait until you see visible "hopper burn" symptoms like yellowing, drying, or circular patches of dead plants in your field. By that time, significant yield loss has already occurred.

Hoppers are most active during the tillering to panicle initiation stages of paddy growth. Regular field monitoring during these stages is essential. Walk through your field and check the base of the plants near the water level — this is where BPH and WBPH hide and feed. If you see nymphs and adults at the base, it is time to spray.

Avoid spraying if heavy rain is expected within 2 to 4 hours. Although Kollar is rainfast within 2 to 4 hours after application, heavy downpour immediately after spraying can wash off the product before it is fully absorbed. Early morning or late afternoon is the best time for application when wind speed is low and temperature is moderate.

Step by Step Usage Instructions

1. Calculate the right quantity: For one acre of paddy, measure exactly 170 g of Kollar WG granules.
2. Prepare the spray solution: Fill your spray tank with half the required water (75 to 100 litres for a 150-200 litre tank). Start the agitation.
3. Mix the granules: Add the measured 170 g of Kollar granules to the tank while agitation is running. The WG formulation dissolves easily, but ensure thorough mixing.
4. Add remaining water: Fill the tank to the full volume (150 to 200 litres per acre). Continue agitation while spraying.
5. Adjust nozzle and pressure: Use a hollow cone or flood jet nozzle. Maintain adequate pressure to ensure good coverage.
6. Spray at the base: This is the most critical step. Aim the spray at the base of the paddy plants near the water level, not just the upper leaves. Hoppers stay at the lower stem, so the spray must reach them there.
7. Ensure thorough coverage: Use sufficient water volume (150-200 litres per acre) to ensure the spray penetrates the canopy and reaches the bottom of every hill.
8. Clean equipment after use: Rinse the spray tank and nozzles thoroughly with clean water after application. Dispose of rinsate safely away from water bodies.

Compatibility

Kollar WG granules are generally compatible with commonly used fungicides and other crop protection products. However, before mixing with any other chemical (fungicides, tonics, or fertilizers), always perform a small jar test first. Mix small quantities of the products in a clear glass jar in the same proportion you plan to use in the tank. If any sign of curdling, precipitation, clumping, or separation appears, do not mix them in the main tank. Always add products to the tank in the correct order: wettable powders first, then WG formulations, then suspension concentrates, then emulsifiable concentrates, and adjuvants last. Maintain continuous agitation during mixing and spraying.

Precautions & Safety

• Personal Protective Equipment (PPE): Always wear gloves, a face mask, and goggles while handling and spraying Kollar. Wear full-sleeve clothing and boots.
• During spraying: Do not eat, drink, or smoke while mixing or spraying. Avoid inhalation of spray mist. Spray in the direction of the wind to avoid drift onto yourself.
• After spraying: Wash hands, face, and all exposed skin thoroughly with soap and water. Wash your clothes separately from family laundry.
• Storage: Store the product in a cool, dry place away from direct sunlight. Keep it in the original container with the label intact. Store away from food, feed, and drinking water.
• Keep away from children and animals: Store in a locked place out of reach of children and domestic animals.
• Environmental caution: Do not spray near fish ponds, water bodies, or areas where fish are reared. The product is toxic to aquatic organisms. Do not use in rice-fish farming systems.
• Container disposal: Do not reuse empty containers for any purpose. Rinse containers thoroughly and dispose of them safely according to local regulations.

Side Effects & Phytotoxicity

• Toxic to aquatic organisms: Kollar is toxic to fish and other aquatic life. Do not apply in or near water bodies. Do not use in paddy fields where fish are reared together (rice-fish system).
• Moderate toxicity: The product carries a Blue/Yellow toxicity label, indicating it is moderately toxic. Handle with appropriate care and always use PPE.

PHI / REI & Storage

Parameter	Details
Pre-Harvest Interval (PHI) - Paddy	26 to 27 days
Rainfastness	2 to 4 hours after application
Protection Duration	2 to 3 weeks (depending on pest pressure and weather)
Storage	Cool, dry place away from sunlight. Keep in original container.