hessian-fly.jpg

Hessian fly

Description

  • Adult: Small, dark, leggy, two-winged insects that resemble mosquitoes.
  • Larvae: Reddish or white maggots that become stationary once they start feeding. Eventually, their skin hardens into a brown shell or "flaxseed."
  • Eggs: Small, slender and reddish. Laid end-to-end on the undersides of leaves. 
     

Timing of damage: Fall and spring

Type of damage: Stunted growth, often with thickened bluish-green leaves.

Scouting: Identify poor stands and check the base of the plant for maggots or "flaxseed" by pulling back the sheaths of several leaves.

Economic threshold: None established. However, planting fly-resistant varieties and planting after the fly-free date will help reduce the chance of infestation.

Similar Pests

Ask an Agronomist

The material and content contained in the Greenbook label database is for general use information only. Agworld and Greenbook do not provide any guarantee or assurance that the information obtained through this service is accurate, current or correct, and are therefore not liable for any loss resulting, directly or indirectly, from reliance upon this service. This label database does not replace the official manufacture issued label. Users of this database must read and follow the actual product label affixed to the container before use of the product.