Chambal Uttam Reon Insecticide

Reon: Attacking Sucking Pests at the Egg Stage, Not Just the Adult

Whitefly and jassid populations in cotton have a frustrating habit of bouncing back quickly after a spray that only kills visible adults — because eggs and nymphs tucked away on the underside of leaves survive untouched, ready to restart the infestation within days. Uttam Reon, manufactured by Chambal Fertilisers and Chemicals Limited, is built specifically around closing this gap, combining Pyriproxyfen 5% and Diafenthiuron 25% in a Suspo-Emulsion (SE) formulation that targets pests across multiple life stages rather than adults alone.

The combination brings two distinct functions together. Diafenthiuron delivers fast-acting paralysis that stops feeding activity within hours, while Pyriproxyfen works as a growth inhibitor, interrupting the insect's development so nymphs can't progress to their next life stage. Between the two, Reon addresses both the immediate crop damage from active feeding and the longer-term population cycle that would otherwise let the infestation rebuild.

Formulation Details

Why Translaminar Movement Matters for These Specific Pests

Whitefly, thrips, jassids, and aphids commonly cluster on the underside of leaves, an area a typical top-down spray application often misses. Reon's translaminar action allows the active ingredients to penetrate the leaf surface and move through leaf tissue, reaching pests, eggs, nymphs, and pupae resting on the underside without requiring the spray to make direct physical contact with every hiding spot — a meaningful advantage over insecticides that rely purely on surface contact.

The Pest Complex It Targets

What Happens in the Hours After Spraying

Reon's action unfolds in a fairly specific sequence. Within a few hours of application, nymphs become paralyzed and stop feeding — halting the sap loss that directly damages the crop. Simultaneously, the Pyriproxyfen component works on a slower biological timeline, preventing surviving nymphs and eggs from progressing through their normal developmental stages, which is what ultimately breaks the pest's reproductive cycle rather than just knocking down the current visible population.

Dosage and Application

Apply Reon as a thorough foliar spray, ensuring coverage extends to the underside of leaves where these pests concentrate, as per label recommendation. Its translaminar movement helps compensate for spray coverage that doesn't perfectly reach every leaf surface, but thorough application remains the more reliable approach. Always confirm exact water dilution volume from the current product label based on field and crop conditions.

Rain Fastness Is a Genuine Practical Advantage

One detail that stands out on Reon's feature list is its rain fastness — remaining effective even if rainfall occurs just 30 minutes after spraying. For growers working around unpredictable monsoon-season timing, this significantly reduces the risk of wasting an application to unexpected rain shortly after spraying, a common frustration with less rain-stable formulations.

Why This Combination Works Well for Resistance Management

• Combines a fast-acting contact-type action with a slower growth-regulating mechanism, targeting pests through two distinct pathways
• Useful where whitefly or jassid populations have shown reduced response to single-mode-of-action insecticides
• Translaminar movement extends effective coverage without needing perfect spray contact on every leaf surface
• Rain fastness reduces the practical risk of wasted applications during unpredictable weather

Frequently Asked Questions

What is the technical composition of Uttam Reon?
It contains Pyriproxyfen 5% and Diafenthiuron 25% in a Suspo-Emulsion (SE) formulation.

How quickly does Reon stop pest feeding after spraying?
Nymphs become paralyzed and stop sucking sap within a few hours of application.

Does rain shortly after spraying reduce its effectiveness?
No, Reon offers rain fastness and remains highly effective even if rainfall occurs just 30 minutes after application.

How does Reon prevent the pest population from rebuilding quickly?
Its growth inhibitor action stops nymphs from progressing to their next developmental stage, disrupting the pest's life cycle beyond just killing the currently visible population.

Disclaimer: The details provided are for informational guidance only. Always adhere to the recommended application instructions as stated on the product label and in the accompanying leaflet.