Lorsban™ 15G Insecticide

Dependable pre-emergent insect control. Lorsban™ 15G is an insecticidal row treatment for control of larval pests.


  • Non-systemic in plants, so the active ingredient is not taken up by the plant.
  • Safety. More than 3,600 studies and over $100 million have been spent examining the health and safety aspects of the active ingredient, chlorpyrifos.
  • Trusted. Lorsban is one of the most widely used insecticides in the world. Chlorpyrifos has been in use for over 45 years.
Lorsban 15G logo


Insects controlled
  • Cabbage maggot (larvae)
  • Northern corn rootworm (larvae)
  • Onion maggot (larvae)
  • Western corn rootworm (larvae)

Crops & Crop Rotation

  • Brassica (cole) leafy vegetables
  • Bushberries
  • Corn – field, sweet, seed, popcorn
  • Cranberry
  • Cucurbit vegetables
  • Dried beans
  • Edible-podded legume vegetables
  • Fruiting vegetables
  • Leafy vegetables
  • Pome fruits
  • Stone fruits
  • Succulent shelled peas and beans
  • Tree nuts
  • Tuberous and corm vegetables


Rate based on pest. See label for details.

When to Apply

Dependent on pest. Use as indicated on product label.

Tank Mixes and Mixing Instructions

Tank mixes
  • No registered tank mixes.

Grazing & Harvest

  • Rutabaga – Do not apply within 30 days of harvest.
  • Broccoli, Brussels sprouts, cabbage, cauliflower – Do not apply within 32 days of harvest.
  • Field, seed and sweet corn – Do not apply within 70 days of harvest.
  • Pickling onion – Do not apply within 97 days of harvest.
  • Dry onion – Do not apply within 109 days of harvest.

Application Guidelines

  • Ground application: Lorsban 15G can be applied through properly calibrated ground application equipment as an in-furrow treatment. Follow the guidelines below to calibrate the application equipment:
    • Fill the hopper of the applicator with Lorsban 15G.
    • Attach a plastic bag to the tube openings to catch metered product from each row outlet.
    • Set the planter to the manufacturer’s initial settings for the desired application rate.
    • Measure off 100 metres and drive the planter the premeasured distance at the desired speed for application.
    • Measure product that was metered into the bags. Each bag should contain the weight of product as listed in the rate chart for a 100 m row. For example, if the target rate was 75 g/100 m row, the bags should all contain 75 grams of product. NOTE: Lorsban 15G granules have a density where 75 grams (weight) of product will be approximately 100 mL (volume).
    • If the application rate is over or under the desired rate, adjust the settings and repeat the calibration.
  • Aerial application: Not registered for aerial application.