Fenvalerate 20% EC (Sumicidin) is a fast-acting pyrethroid insecticide effective against leafminers, beet armyworm, and alfalfa weevil. Learn about its mode of action, application rates, safety precautions, and environmental guidelines.
A 1-liter emulsifiable concentrate insecticide from the pyrethroid group (IRAC 3A), providing strong knockdown activity through both contact and ingestion. It contains four optical isomers, with the SS-isomer being responsible for the highest insecticidal potency.
Mode of Action
Fenvalerate acts on the insect nervous system by disrupting voltage-gated sodium channels in the axonal membrane. This interference causes rapid paralysis and ultimately the death of the target pest. It has an acute oral toxicity of LD50 = 451 mg/kg and demonstrates fast knockdown performance.
Uses
In Iran, fenvalerate is used for controlling:
Prodenia (beet armyworm) in sugar beet
Leafminer (apple blotch leafminer) in apple orchards
Alfalfa weevil in alfalfa fields
Internationally, it is commonly applied for:
Aphid control in winter and spring wheat
Various chewing and sucking pests in field crops and fruit trees
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Product
Pest
Consumption rate
Sugar Beet
Prodenia
1 L/ha
Alfalfa
Alfalfa Weevil
1 L/ha
Fruit Trees
Leafminer
500 ml per 1000 L of spray solution
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Additional information
Weight
1000ml
Formulation
EC20%
Resistance group
IRAC=4A
Chemical group
pyrethroid
Amount of active ingredient
200gr/L
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If other pyrethroid insecticides (such as dimethoate mixtures) have been used previously, avoid applying fenvalerate immediately afterward.
Store the formulation in a dark, cool area away from direct sunlight, as light can affect product stability.
Fenvalerate is extremely toxic to honeybees, fish, aquatic organisms, and beneficial arthropods. Therefore, avoid application within 6 meters of field borders to reduce the impact on pollinators and natural enemies.
The pre-harvest interval (PHI) is approximately 20 days.
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Highly toxic to honeybees, fish, aquatic life, and beneficial insects — avoid spraying during flowering or near water bodies.
Prevent drift toward field margins and pollinator habitats.
Do not dispose of leftover spray mixture into soil, irrigation canals, drains, or natural water sources.
Rinse and dispose of empty containers safely, following local agricultural regulations.
Store in a cool, shaded place to maintain product stability and prevent degradation.
