Oxyfluorfen 23.5% EC

Oxyfluorfen 23.5% EC

Oxyfluorfen 23.5% EC is a selective, contact-action herbicide from the diphenyl ether chemical group, widely trusted by Indian farmers for its dual pre-emergence and early post-emergence weed control. Particularly popular among onion, groundnut, tea, and potato growers, it has built a strong reputation for delivering long-lasting, weed-free conditions during the crop’s most vulnerable early growth period without causing any harm to the main crop when used as directed.

How Oxyfluorfen 23.5% EC Works

This herbicide works through a unique, light-dependent mechanism, targeting the enzyme protoporphyrinogen oxidase (PPO) inside the weed’s cells. When the treated weed is exposed to sunlight after application, the blocked PPO enzyme pathway causes a rapid build-up of toxic porphyrin compounds in the weed’s cells. These compounds then react with oxygen in the presence of sunlight to generate reactive oxygen species, which destroy the weed’s cell membranes, causing rapid desiccation and death of all green tissue. This light-activated action typically causes visible wilting and burning within 2 to 4 hours on sunny days, making results clearly visible very quickly after spraying.

Why Farmers Choose This Herbicide

One of the most valued qualities of Oxyfluorfen 23.5% EC is its dual-action protection — it creates a protective chemical barrier in the soil layer for pre-emergence control, and also directly burns young, actively growing weeds on contact for early post-emergence control. This gives farmers a wider application window compared to purely pre-emergence herbicides, allowing them to spray after sowing and still get good results even if some weeds have already started to emerge at an early stage.

This herbicide is particularly trusted by onion farmers across India, where broadleaf weed pressure during the early crop establishment phase can severely reduce yield if left unmanaged. Because Oxyfluorfen has positional selectivity — staying active in the topsoil surface layer without leaching into the deeper root zone — it remains safe for bulb and root crops like onion and potato even when applied after sowing. A single well-timed application typically gives 30 to 40 days of weed-free protection, covering the entire critical period when weeds compete most aggressively with the young crop. Beyond agriculture, it is also used for weed control in forest lands, railway tracks, and irrigation canals, showing just how broad its weed-control capability is.

Key Benefits

• Controls annual broadleaf weeds and grasses in one application
• Dual action — pre-emergence barrier and early post-emergence burndown together
• Light-activated mechanism gives visible results within 2 to 4 hours on sunny days
• Gives 30 to 40 days weed-free protection during critical crop establishment
• Positional selectivity — stays in topsoil, safe for bulb and root crops
• Resistant to washoff once dried on soil or weed surface
• Compatible with most other herbicides for tank-mix applications

Why Crop Nutrition Matters Alongside Weed Control

A weed-free field gives the crop full access to soil nutrients, water, and sunlight — but strong nutritional support helps the crop make the most of that advantage. Products like Humic Acid 98% Flakes help build stronger roots and improve soil nutrient availability during early crop establishment, while Power PGR Liquid helps the crop channel healthy early growth into better flowering and fruit development for higher overall yield at harvest.

Safety Tips & Precautions

• Apply during cooler hours of the day — early morning or late afternoon — when wind speed is low for best results and reduced drift risk
• Sunlight is essential for this herbicide to work — avoid application on overcast days for pre-emergence soil barrier activity
• Apply as a ground-level directed spray aimed at young, newly emerged weeds — avoid spraying directly onto crop foliage
• Do not apply near water bodies or aquatic areas as Oxyfluorfen can affect aquatic life
• Avoid overuse — excessive application can cause herbicide build-up in the soil
• Perform a jar test before tank-mixing with other herbicides or fertilizers
• Wear gloves, mask, and protective clothing while mixing and spraying
• Avoid direct contact with skin and eyes during application
• Wash hands and exposed skin thoroughly with soap after spraying
• Keep away from children, animals, and food or feed storage areas

Storage Instructions

Store Oxyfluorfen 23.5% EC in a cool, dry place away from direct sunlight and moisture. Keep the container tightly sealed and out of reach of children and animals.

Learn more about Oxyfluorfen – Wikipedia