Chemical Profile and Contact Action
Oxykill contains Oxyfluorfen 23.5% EC, belonging to the diphenyl ether chemical family. It acts as a contact herbicide with limited translocation, forming a persistent chemical barrier on the soil surface.
The active molecule disrupts cell membranes through light-dependent peroxidation of membrane lipids following protoporphyrinogen oxidase (PPO) inhibition. Emerging weed shoots contact the chemical seal and collapse rapidly upon exposure to sunlight.
- Active ingredient: Oxyfluorfen 23.5 percent w/w EC
- Herbicide group: WSSA Group 14 / HRAC Group E (PPO inhibitor)
- Action mode: Selective contact action with persistent soil surface barrier
- Target weeds: Annual grasses, sedges, and broadleaf weeds in germinating stages
CIBRC Approved Crop Registrations
Oxykill is officially registered by CIBRC for application across sensitive horticultural crops and plantations where selective weed suppression is required during early seedling establishment.
Proper application demands uniform soil preparation with fine tilth and adequate soil moisture so that an unbroken chemical film forms over the top layer.
- Onion: Applied pre-transplanting or 2-3 days post-transplanting before weed emergence
- Direct Seeded Rice: Pre-emergence spray within 3-4 days after sowing under optimal moisture
- Potato: Pre-emergence application prior to potato sprout emergence
- Tea: Directed post-emergence spray between bush rows avoiding crop foliage contact
Soil Preparation and Application Guidelines
The efficacy of Oxykill relies entirely on an undisturbed herbicide seal. Heavy clods, crop debris, or soil cultivation after application will break the film, leading to localized weed escapes.
Do not apply when heavy rain or flooding is anticipated, as standing water can cause splash injury on emerging seedlings. Use a flat-fan or floodjet nozzle calibrated for uniform swath distribution.
- Seedbed condition: Well-pulverized, clod-free soil bed with adequate moisture
- Nozzle type: Flat-fan or floodjet nozzle delivering medium-to-coarse spray droplets
- Water volume: Standard calibrated volume per hectare to ensure continuous coverage
- Personal protection: Use protective gloves, eyewear, and boots during spray preparation
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board and Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
Can Oxykill be used after onion seedlings have emerged?
Oxykill is primarily positioned as a pre-emergence or early post-transplant spray before weed emergence; application on tender unhardened onion foliage without label recommendations can cause temporary leaf burn.
How does Oxykill control weeds before they sprout?
It forms a light-activated barrier on the soil surface. When germinating weed seedlings push through this layer, the chemical enters cellular membranes and destroys emerging tissue upon exposure to sunlight.
Can soil be hoed or weeded after spraying Oxykill?
No, mechanical intercultural operations or hoeing break the herbicide chemical seal on the soil surface, allowing viable weed seeds from deeper layers to germinate.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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