Three-cornered alfalfa hopper


  • Adult: Tiny, green, wedge-shaped bug.
  • Nymphs: Similar to adult in shape but pale yellow and heavily spined.
  • Eggs: White, oblong to oval and slightly larger at one end. 

Timing of damage: All season

Type of damage: Weak, broken or damaged stems.

Scouting: Do a visual examination of seedlings. For older plants, do a net sweep.

Economic threshold: When 10% of plants less than 12" tall are infested; when 50% of seedlings 
are girdled; or there is one hopper per net sweep for plants setting pods.

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