Ronfen Insecticide - Pyriproxyfen 8% + Dinotefuran 5% + Diafenthiuron 18% SC by Best Agrolife

Product Overview

Ronfen is a powerful triple-action insecticide from Best Agrolife Limited, formulated with a unique combination of Pyriproxyfen 8% + Dinotefuran 5% + Diafenthiuron 18% SC (Suspension Concentrate). This insecticide is designed specifically to tackle the sucking pest complex that commonly attacks important cash and vegetable crops like cotton, brinjal, tomato, and chilli.

What makes Ronfen different is its three-way combination of active ingredients that work together through both systemic and contact action. The product contains a pro-insecticide (Diafenthiuron), an Insect Growth Regulator or IGR (Pyriproxyfen), and a neonicotinoid (Dinotefuran). This combination provides quick knockdown of pests along with longer residual control, reducing the number of sprays needed in a crop cycle. Ronfen is effective against whitefly, jassids, aphids, and thrips — the four major sucking pests that cause significant yield loss in these crops.

Available in pack sizes of 50 ml, 100 ml, 250 ml, 500 ml, and 1 litre, Ronfen is suitable for farmers with small as well as large holdings. The SC (Suspension Concentrate) formulation is easy to mix with water and apply using standard spray equipment. With a recommended dosage of 240 to 330 ml per acre depending on the crop, it offers a practical and effective solution for sucking pest management.

Key Benefits

• Triple-action pest control — Combines a pro-insecticide, an IGR, and a neonicotinoid in one product for broad-spectrum control of sucking pests.
• Quick knockdown effect — Provides fast action against active infestations of whitefly, jassids, aphids, and thrips.
• Long residual protection — Stays active on the crop for an extended period, reducing the number of sprays needed per season.
• Systemic + Contact action — Works both on contact with the pest and by moving inside the plant to protect unsprayed parts.
• Crop safety — Safe to use even at early crop stages (below 50 days after sowing) as per available information.
• Easy-to-use SC formulation — Suspension Concentrate mixes easily with water and works well with knapsack and power sprayers.
• Reduces pest resurgence — The IGR component (Pyriproxyfen) disrupts insect growth and egg-laying, helping break the pest life cycle.

How It Works

Ronfen works through a three-way combination of active ingredients, each with a different mode of action. This makes it effective against sucking pests that have developed resistance to single-ingredient insecticides.

Diafenthiuron (18%) acts as a pro-insecticide. Once applied on the crop and exposed to sunlight, it converts into an active form that inhibits mitochondrial ATP synthesis in insects. This disrupts energy production in the pest's cells, leading to rapid paralysis and death. It provides strong contact and some translaminar activity.

Dinotefuran (5%) is a neonicotinoid insecticide that works systemically. It is absorbed by the plant and moves through the vascular system to all parts of the crop. It targets the nicotinic acetylcholine receptors in the insect's nervous system, causing overstimulation, paralysis, and death. This systemic movement helps protect new growth and parts of the plant that were not directly sprayed.

Pyriproxyfen (8%) is an Insect Growth Regulator (IGR) that mimics juvenile hormone in insects. It does not kill adult insects directly but prevents eggs from hatching and stops young nymphs from developing into adults. This breaks the pest's life cycle and reduces future generations, providing long-term population control.

Together, these three ingredients provide both immediate knockdown of existing pests and long-lasting protection against new infestations. The systemic action ensures that even hidden or newly emerged pests on untreated plant parts are controlled.

Technical Specifications

Parameter	Details
Product Name	Ronfen Insecticide
Brand	Best Agrolife Limited
Active Ingredients	Pyriproxyfen 8% + Dinotefuran 5% + Diafenthiuron 18%
Formulation	SC (Suspension Concentrate)
Mode of Action	Systemic & Contact
Chemical Classification	Chemical Insecticide
Toxicity Label	Blue
Target Pests	Whitefly, Jassids, Aphids, Thrips
Recommended Crops	Brinjal, Cotton, Tomato, Chilli
Pack Sizes Available	50 ml, 100 ml, 250 ml, 500 ml, 1 L
Country of Origin	India

Recommended Dosage & Application

Crop	Target Pests	Dosage per Acre	Water Volume	Dosage per Litre of Water	Waiting Period (PHI)
Brinjal	Whitefly, Jassids, Thrips, Aphids	240 to 330 ml	200 L	1.2 to 1.65 ml	8-10 days
Cotton	Whitefly, Jassids, Thrips, Aphids	240 ml	200 L	1.2 ml	48 days
Chilli	Whitefly, Jassids, Thrips, Aphids	330 ml	200 L	1.65 ml	5 days
Tomato	Whitefly, Jassids, Thrips, Aphids	250 to 300 ml	200 L	1.25 to 1.5 ml	—

General dilution guide: Mix 20 to 25 ml per 15-litre spray pump. For small areas, mix 1.25 to 1.5 ml per 1 litre of water.

When to Use

Apply Ronfen when pest infestation reaches the Economic Threshold Level (ETL) — meaning when the pest population is high enough to cause economic damage if left untreated. Early application at the first signs of pest activity gives the best results.

For brinjal, the first application can be done around 15 days after transplanting once target pests like whitefly or jassids are observed above ETL. For cotton, apply when pest infestation crosses ETL levels. For chilli and tomato, apply at the early stage of pest infestation, especially when young nymphs of whiteflies and thrips are first noticed.

Spray during cooler parts of the day — early morning or late evening — to avoid heat stress on the crop and to reduce evaporation of the spray solution. Avoid spraying when rain is expected within 4-6 hours, or on windy days to prevent spray drift.

Step by Step Usage Instructions

1. Check pest level — Inspect your crop and confirm that pest infestation has crossed the Economic Threshold Level before spraying.
2. Prepare the spray solution — Fill the spray tank with half the required amount of clean water. Add the measured quantity of Ronfen and stir well. Add the remaining water and mix thoroughly.
3. Use the right equipment — Apply using a knapsack sprayer, high-volume sprayer, or ASPEE HTP power sprayer fitted with a flat fan nozzle for uniform coverage.
4. Spray thoroughly — Ensure complete coverage of the crop foliage, especially the undersides of leaves where sucking pests like whitefly and aphids tend to hide.
5. Clean equipment — After spraying, wash the sprayer thoroughly with clean water. Do not dispose of leftover spray solution near water bodies.
6. Follow safety measures — Wear gloves, mask, full-sleeve clothing, and safety goggles during mixing and spraying. Do not eat, drink, or smoke while handling the product.
7. Post-application care — Wash hands, face, and exposed skin thoroughly with soap and water after spraying. Keep children and livestock away from the sprayed area until the spray has dried.

Compatibility

Consult an agronomist or local agriculture expert before tank mixing Ronfen with other pesticides, fungicides, or fertilizers. Always perform a small jar test before mixing on a large scale to check for any physical incompatibility such as settling, curdling, or separation. Follow IRAC resistance management guidelines and avoid mixing with products that have the same mode of action.

Precautions & Safety

• Personal protection: Wear gloves, a face mask, safety goggles, and full-sleeve clothing while mixing and spraying the product.
• During application: Do not eat, drink, or smoke while handling the insecticide. Avoid spraying on windy days to prevent drift to non-target areas.
• After spraying: Wash hands, face, and all exposed skin thoroughly with soap and water. Wash contaminated clothing separately before reuse.
• Storage: Store in a cool, dry, and well-ventilated place away from direct sunlight. Keep away from food, feed, fertilizers, drinking water, and children.
• Disposal: Do not reuse empty containers for storing food or water. Dispose of containers as per local guidelines.
• Environmental care: Avoid spray drift towards water bodies, ponds, and non-target crops. Do not contaminate water sources with the product or its container.
• First aid: In case of accidental ingestion, inhalation, or eye/skin contact, seek immediate medical attention and show the product label to the doctor.

Side Effects & Phytotoxicity

As per available information, Ronfen is safe for use on crops even at early stages (below 50 days after sowing). However, always follow the recommended dosage. Over-application or spraying under extreme weather conditions (high temperature, strong sunlight) may cause stress to the crop. Follow IRAC resistance management guidelines and avoid repeated applications of insecticides with the same mode of action to prevent resistance development in pest populations.

PHI / REI & Storage

Parameter	Details
PHI (Pre-Harvest Interval) - Brinjal	8 to 10 days
PHI (Pre-Harvest Interval) - Cotton	48 days
PHI (Pre-Harvest Interval) - Chilli	5 days
Storage Conditions	Cool, dry, well-ventilated place away from direct sunlight, food, feed, and water sources
Container	Keep in original sealed container