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Natural enemies tested in hightunnel raspberries

At the Tunnel Berries project, they released two commercially available (purchased from Koppert) natural enemies for whitefly control in the high tunnel raspberries: a predatory beetle, Delphastus catalinae, and a parasitoid wasp, Encarsia formosa. These are normally used in greenhouse production, but the researchers are hoping that they can establish in the high tunnels too.

Delphastus catalinae being introduced on raspberry leaves. The adult insects are shipped in a container with buckwheat hulls as a carrier.

Encarsia formosa are introduced by placing cards on raspberry canes. The card hold parasitized whitefly pupae from which the parasitic wasps will hatch.

Source: TunnelBerries