
Description
Phosmet 96% Ultra-Low-Volume Formulation
I. Product name
Phosmet 96% Ultra-Low-Volume Formulation
Fenitrothion 96% ULV
active ingredient: Fenitrothion (96%) for Controlling Cutworms
delivery mechanism of a medicine (e.g. pill, powder etc): Ultra-Low Volume (ULV)
norm: 500 mL / 1 L / 5 L / 20 L (airline-approved drums)
Fenitrothion 96% ULV
active ingredient: Fenitrothion (96%) for Controlling Cutworms
delivery mechanism of a medicine (e.g. pill, powder etc): Ultra-Low Volume (ULV)
norm: 500 mL / 1 L / 5 L / 20 L (airline-approved drums)
II. Mechanisms of action of active ingredients
Phosmet belongs to the class ofBroad-spectrum organophosphate insecticides, by inhibiting the insect nervous system'sAcetylcholinesterase (AChE)How the active ingredient works:
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inhibition of enzymes: The phosphorus atom in the phosmet molecule forms a covalent bond with the esterification site of acetylcholinesterase, resulting in the formation of a stable phosphorylated enzyme.
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Neurotoxicity: Acetylcholine accumulates in large quantities in the synaptic cleft, continuously stimulating cholinergic neurons, causing the pest to first become excited, then go into convulsions, and ultimately die from paralysis.
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Both Contact and Stomach Poisoning: It has both strong contact and stomach toxicity, and is effective against both piercing-sucking and chewing pests.
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Fumigation: The ULV formulation produces extremely fine droplets (50–100 micrometers), which provide a certain degree of fumigation penetration and can control hidden pests.
III. Product characteristics
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High-concentration active ingredient: 96%—ultra-high concentration, suitable for ultra-low-volume spraying and aerial application; requires minimal pesticide usage while covering a large area
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Formulations Specifically Designed for ULV: No need to dilute with water; use as is or dilute with a small amount of solvent. Suitable for rapid, comprehensive pest control over large areas.
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Quick Knockout: Highly effective contact action; pests stop feeding within a few minutes after application, and the mortality rate exceeds 90% within 1–2 days.
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Aviation Adaptation: The mist droplets are evenly distributed and their drift is controllable, making them particularly suitable for spraying by unmanned aerial vehicles (UAVs) and manned aircraft.
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Extremely low cost: Only 200–500 mL of spray solution is needed per mu (compared to 30–50 L of water required for traditional spraying), significantly reducing labor and transportation costs
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Broad-spectrum and highly effective: Provides excellent control against explosive outbreaks of pests such as rice borers, rice leafhoppers, locusts, and pine caterpillars
IV. Usage and dosage
Applicable Scenarios: Integrated pest management for large-scale pest and disease outbreaks in rice paddies, wheat fields, grasslands, forests, and sugarcane plantations
forms
| prevention and treatment target | Applicable Scenarios | Pesticide Application Rate per Mu (96% Technical Grade) | Application method |
|---|---|---|---|
| Second-generation armyworm, third-generation armyworm | Rice Paddy Fields | 30–50 mL | ULV Spraying with Drones/Aircraft |
| Rice brown planthoppers, rice leaf rollers | Rice Paddy Fields | 40–60 mL | ULV Spraying with Drones/Aircraft |
| Locusts (such as the East Asian migratory locust) | Grasslands/Mudflats | 50–80 mL | Aerial Spraying on a Large Scale |
| Pine caterpillars, bamboo locusts | Forest/Bamboo Grove | 60–100 mL | Aircraft or large ground-based ULV equipment |
Spraying Parameters:
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Mist droplet size: Control the droplet diameter within the range of 80–120 micrometers (VMD)
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Flight Altitude: 2–3 meters for drones, 5–10 meters for manned aircraft
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Wind Speed Conditions: Apply when wind speed is 1–3 on the Beaufort scale; avoid drift against the wind
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Assignment Time: The best time to work is between 6:00 and 9:00 a.m. or 4:00 and 7:00 p.m., when the temperature is below 30°C and the relative humidity is above 60%.
V. Guidance for use
✅ Pre-application preparation
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Instrument Inspection: Ensure that the ULV nozzles produce a fine mist and do not leak; ensure that the drone’s flow meter is accurately calibrated
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Weather Confirmation: Temperature ≤ 35°C, wind speed ≤ 3 m/s; avoid applying the pesticide within 2 hours before rainfall
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Boundary Markers: Notify nearby beekeepers and fish pond owners in advance, and set up warning signs marking the treatment boundary.
✅ Standard Operating Procedures for Pesticide Application
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No need to dilute with water: 96% ULV agent can be poured directly into the spray tank for use, or diluted with a dedicated solvent (such as diesel or methyl oleate) at a ratio of 1:1 to 1:3 to reduce volatility.
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Route Planning: Drones follow a zigzag flight path to ensure that no areas are sprayed twice and no areas are missed, with the spray volume per mu controlled between 200 and 500 mL.
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Flight Speed: Drone speed of 3–5 m/s to ensure effective droplet deposition
⚠️ Notes
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Drift Risk: ULV droplets are very fine and are easily carried by the wind; there must be no fish ponds, apiaries, mulberry orchards, or sensitive crops within 500 meters downwind.
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Highly Toxic Aquatic Organisms: Extremely toxic to fish, shrimp, and crabs; application above water source protection areas and aquaculture zones is strictly prohibited.
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Bee Venom: Do not use during the flowering period; notify nearby beekeepers to relocate their hives before applying the pesticide.
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Drug Rotation: Organophosphates are prone to resistance; it is recommended to rotate their use with imidacloprid, chlorantraniliprole, and similar products.
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Instrument Cleaning: After applying the pesticide, thoroughly clean the equipment with diesel fuel or a specialized cleaning agent. Do not pour waste liquid into water sources.
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Personal Protection: Operators must wear gas masks, goggles, and impermeable protective clothing; direct contact with the chemical solution with bare hands is strictly prohibited.


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