Grasshopper Spore - Knowledgebase Question

Lohn, TX
Question by vanzant
December 29, 1997
There's a product called semaspore bait advertised in seed catalogs that "spreads a deadly virus for grasshoppers." Is this effective and is it harmful to people or animals?

Answer from NGA
December 29, 1997


I'm not familiar with "semaspore bait", but there is a grasshopper pathogen called "Nosema locastae" that's a biological control for grasshoppers. Perhaps they are the same product? Nosema locastae is a single celled protozoan that infects grasshoppers and crickets, providing a natural means of control. It is specific to grasshoppers and doesn't harm animals or humans.

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