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Registered Crop Input Products / Malathion 500

Malathion 500

PCP #5821 · Interprovincial Cooperative Limited · Insecticide

Group 1BRegistration expired

Group 1B organophosphate insecticide for control of aphids, beetles, caterpillars, grasshoppers, mites and other insects on field crops, vegetables, forages, ornamentals and empty grain bins.

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Registered uses (34)

Crop × pest × application rate combinations from the official label. Rates converted to per-acre. Always confirm against the official label PDF before applying.

CropTargetRatePHI
AsparagusAsparagus Beetle1.21 L/acre1 d
BeanMexican Bean Beetle, Aphids, Mites, Leaf Hopper, Flea Beetles0.567–1.21 L/acre1 d
BeetMexican Bean Beetle, Aphids, Mites, Leaf Hopper, Flea Beetles0.567–1.21 L/acre7 d
BroccoliAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre3 d
Brussels SproutsAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre7 d
CabbageAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre7 d
CanolaDiamond Back Moth (Larvae)0.223–0.344 L/acre7 d
CanolaFlea Beetles0.445 L/acre7 d
CanolaGrasshoppers0.445–0.688 L/acre7 d
CarrotAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre1 d
CerealsCereal Leaf Beetle0.223–0.445 L/acre7 d
CerealsEnglish Grain Aphid, Green Bug, Winter Grain Mite, Armyworm0.607–0.809 L/acre7 d
CerealsGrasshoppers0.688 L/acre7 d
CucumberAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre1 d
EggplantAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre3 d
FlaxGrasshoppers0.445–0.688 L/acre7 d
Grain StorageConfused Flour Beetle, Grain Mite, Granary Weevil, Rusty Grain Beetle, Sawtoothed Grain Beetle, Indian Meal Moth, Lesser Grain Borer––
GrassCereal Leaf Beetle0.223–0.445 L/acre7 d
GrassGrasshoppers0.688 L/acre7 d
LegumeCereal Leaf Beetle0.223–0.445 L/acre7 d
LegumeGrasshoppers0.688 L/acre7 d
LentilsGrasshoppers0.688 L/acre14 d
LettuceAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre14 d
OatsEnglish Grain Aphid, Green Bug, Winter Grain Mite, Armyworm0.607–0.809 L/acre7 d
OrnamentalsAphids, Bagworms, Shoot Moth, Lace Bugs, Leaf Hoppers, Leaf Miners, Mealy Bugs, Scales (Crawlers), Spider Mites, Tarnished Plant Bug, Tent Caterpillar, Thrips0.567–1.21 L/acre–
Perennial Weed ControlAlfalfa Weevil, Grasshoppers, Lygus Bug, Leaf Hopper, Aphids, Spittle Bugs0.809–1.21 L/acre7 d
PotatoAphids, Leaf Hopper, Leaf Miners, Mites, Cucumber Beetle, Colorado Potato Beetle0.567–0.809 L/acre3 d
RadishMexican Bean Beetle, Aphids, Mites, Leaf Hopper, Flea Beetles0.567–1.21 L/acre7 d
RyeEnglish Grain Aphid, Green Bug, Winter Grain Mite, Armyworm0.607–0.809 L/acre7 d
SquashAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre3 d
Sweet CloverSweet Clover Weevil0.567–1.01 L/acre7 d
TomatoAphids, Leaf Hopper, Leaf Miners, Mites, Cucumber Beetle, Colorado Potato Beetle0.567–0.809 L/acre3 d
TurnipAphids, Cabbage Looper, Imported Cabbage Worm, Spider Mites, Leaf Hopper, Cucumber Beetle, Flea Beetles0.567–1.21 L/acre1 d
WheatEnglish Grain Aphid, Green Bug, Winter Grain Mite, Armyworm0.607–0.809 L/acre7 d

About this content. This page presents the official PRD label as published by Health Canada's Pesticides Regulatory Directorate (formerly the Pest Management Regulatory Agency), the source of record. Always read the official label and consult your provincial pesticide- application authority before use. Report an error.

Quick facts

Active ingredients
malathion 500 g/L
CAS 121-75-5
Formulation
emulsifiable concentrate
Resistance group
Group 1B
First registered
1956-07-01
Registration expiry
2025-09-01