Lorsban NT


Lorsban™ NT insecticide uses innovative technology to produce a low-odour, water-based formulation of Lorsban 4E insecticide. Like its predecessor, Lorsban NT offers superb versatility in controlling a wide variety of pests across numerous crops.


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Lorsban NT insecticide uses innovative technology to produce a low-odour, water based formulation of Lorsban 4E insecticide. Like its predecessor, Lorsban NT offers superb versatility in controlling a wide variety of pests across numerous crops.


Lorsban NT is one of the most trusted insecticides in the world. Chlorpyrifos has been in use for over 45 years.

Residual control

The same great efficacy, quick knockdown and residual control that growers have come to expect from the Lorsban brand for over 30 years.

Three-way mode of action

Lorsban NT offers a unique three-way mode of action to control insects by contact, ingestion and inhalation.

Multiple control methods

Lorsban NT works on contact, and through ingestion and vapour inhalation.


Below lists the crops that Lorsban NT insecticide can be used on.


Barley (Hordeum vulgare ssp. vulgare)


Beet, Sugar, For Seed (Beta vulgaris ssp. vulgaris)

Beet, Sugar (Beta vulgaris ssp. vulgaris)


Broccoli, Chinese, or White Flowering, or Gai Lon (Brassica oleracea var. alboglabra)

Brussels Sprouts

Brussels Sprouts (Brassica oleracea var. gemmifera)


Cabbage, Chinese (Unspecified) (Brassica rapa ssp. pekinensis)

Cabbage, Chinese Mustard (Gai Choy) (Brassica rapa ssp. nipposinica)

Cabbage, Chinese, Bok Choy (Brassica rapa ssp. chinensis)

Cabbage, Chinese, For Seed (Brassica rapa ssp. pekinensis)

Cabbage, Chinese, Napa (Brassica rapa ssp. pekinensis)

Cabbage (Brassica oleracea)


Canola (Brassica spp.)


Carrot (Daucus carota ssp. sativus)


Cauliflower (Brassica oleracea var. botrytis)

Celeriac Celery Root

Celery Root (Apium graveolens var. rapaceum)


Corn, Field, For Forage, or Fodder (Zea mays ssp. mays)

Corn, Field, For Seed (Zea mays ssp. mays)

Corn, Field, For Silage (Zea mays ssp. mays)

Corn, Field, or Silage, Seed Treatment (Zea mays ssp. mays)

Corn, Field (Zea mays ssp. mays)

Corn, Sweet (Zea mays ssp. mays)

Corn, Sweet (Zea mays)

Grain Corn


Cucumber (Cucumis sativus var. sativus)


Filbert (Corylus spp.)


Garlic (Allium spp.)


Oat (Avena spp.)


Onion, Bulb (Allium spp.)

Onion, Green (Allium spp.)



Pepper, Bell, or Green (Capsicum annuum)


Potato (Solanum tuberosum ssp. Tuberosum)


Radish, Asian


Rutabaga (Brassica napus var. napobrassica)


Strawberry (Fragaria x ananassa)



Tobacco (Nicotiana tobacum)


Wheat (Triticum spp.)

Provincial Registrations

Now registered in the following provinces:

  • Registered
  • Unregistered

Technical Specifications

  • Application Method
    Aerial: Not registered for aerial application.
  • Approved Use

    Refer to the Lorsban NT label for complete use instructions.
    Refer to the Controlled Pests list for the full list of pests.
    Insects controlled
    • Colorado potato beetle(1)
    • Diamondback moth(1)
    (1) Larvae

  • Rates
    Dependent on pest. Use as indicated on product label.
    * Use the higher rate for larger larvae (insects), higher populations or when the crop foliage (canopy) is dense.
  • Application Timing
    Rainfast: 4 to 6 Hours for foliar treatments. Soil treatments should not be applied if heavy rain is forecast.
    Light rainfall during or after application is helpful.
  • Mixing Instructions
    To prepare the spray, add approximately 1/4 of the required amount of water to the spray tank and with agitation add the Lorsban. Complete filling the tank with the balance of water needed. Maintain sufficient agitation during both mixing and application to ensure uniformity of the spray mixture.
  • Herbicide Group

    Group 1B

  • Tank Mixes

    In wheat, barley and oats, when tank mixing Lorsban NT insecticide with the following herbicides, always add the herbicide to the spray tank first and then add the Lorsban NT insecticide:

    • Banvel® + 2,4-D Amine

    • Buctril M

    • MCPA Amine or Ester

    • 2,4-D Amine or Ester

  • Additional Information

    Optimizing Performance:

    • Uniform crop coverage is essential.

    • Use a boom configuration that provides optimum coverage.

    • Use higher rates where infestations are heavy or foliage is dense.

    Resistance Management:

    Lorsban NT contains a Group 1B (organophosphate) insecticide. Any insect population may contain individuals naturally resistant to Lorsban NT and other Group 1B insecticides. The resistant individuals may dominate the insect population if this group of insecticides is used repeatedly in the same fields.

    Other resistance mechanisms that are not linked to the site of action but are specific for individual chemicals, such as enhanced metabolism, may also exist.

    Appropriate resistance management strategies should be followed.

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Labels (PDF)
Lorsban NT Insecticide Label
Insecticide Lorsban NT étiquette principale

Safety Data Sheets (PDF)
Lorsban NT Insecticide SDS
Insecticide Lorsban NT fiche signalétique

View Additional Resource Material (PDF)
West Field Guide
Horticulture Crop Protection Guide
Guide de Protection des Cultures

Before use and for complete product information, please read and follow label directions.