Pymetrozine 50% WG Insecticide Uses

Pymetrozine 50% WG is a systemic insecticide registered for use in India under the Insecticides Act, 1968 and sold under various trade names including Checkerz and Pollux. It is a specialist sap-sucking-pest insecticide, applied as a foliar spray in paddy against the brown plant hopper and in mango against hoppers. Pymetrozine remains legally registered and sold in India; always confirm the current pack label before use. This page lists its mode of action, key benefits and the recommended crop-wise dosage as per manufacturer labels.

Mode of Action

Pymetrozine belongs to the pyridine azomethine chemical class and has a distinctive mode of action: rather than acting as a nerve poison, it selectively disrupts the feeding behaviour of sap-sucking insects. Within a short time of ingestion, treated hoppers stop probing and feeding on plant sap, effectively starving even though the insect may remain alive on the plant for some time afterward. Because it acts on the insect's feeding mechanism rather than a broad nerve pathway, it is highly selective for hoppers, plant/leafhoppers and related sap-sucking pests while being comparatively gentle on many beneficial and predatory insects when used as directed. It is translaminar and locally systemic within treated leaf tissue, giving good coverage of the pest's feeding sites.

Features & Benefits

• Purpose-built for brown plant hopper in paddy — one of the most damaging and yield-limiting pests of rice in India — and for hoppers in mango.
• Selective, anti-feeding mode of action stops pest damage quickly while being comparatively gentle on many beneficial insects at labelled rates.
• Systemic and translaminar movement within treated leaf tissue improves coverage of hidden, sap-sucking pests.
• A different, non-neurotoxic mode of action to older hopper insecticides, useful for resistance-management rotation programs.

Recommended Usage of Pymetrozine 50% WG Insecticide

The table below gives the commonly recommended dose and water volume per acre for each crop and target pest, as listed on manufacturer labels for this active ingredient. Always confirm against the current product label before use.

Doses above are the commonly listed formulation-label rates for Pymetrozine 50% WG, rounded to practical spray-tank quantities. Always confirm the current pack label/CIB registration and consult your local agricultural extension office for the latest guidance before use and before harvest.

How to Use

1. Scout the field/orchard regularly and confirm the correct dose per acre from the current product label once hopper populations approach the economic threshold.
2. Make a thin paste of the required quantity in a small amount of water, then dilute this gradually into the full spray tank volume while stirring continuously so the water-dispersible granule disperses evenly.
3. Spray using a knapsack or power sprayer fitted with a flat-fan or hollow-cone nozzle, directing the spray toward the base of paddy tillers or into the orchard canopy where hoppers congregate, for best contact with the target pest.
4. For paddy, spray at the first sign of brown plant hopper build-up rather than waiting for visible hopper-burn symptoms, since damage can progress quickly once populations peak.
5. Respect the waiting period before harvest listed for each crop above.

Precautions & Safety

• Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying.
• Do a small jar-compatibility test before tank-mixing with other agrochemicals.
• Store in the original, tightly closed container in a cool, dry place away from direct sunlight, food, feed and out of reach of children and livestock.
• Respect the waiting period (PHI) listed for each crop above before harvesting, and follow your local agricultural extension advice for the latest guidance.
• Avoid repeated, back-to-back applications of the same insecticide across a season; rotate with an insecticide from a different mode-of-action group as part of a resistance-management program.
• Wash hands, face and any exposed skin thoroughly with soap and water after handling or spraying, and change out of contaminated clothing before eating, drinking or smoking.