Controling of Colorado potato beetle (Leptinotarsa Decemlineata say) in the organic fields with spinosad

The new insecticide spinosad was added to Council Regulations (EEC) No. 2092/91 on organic production in 2008. It is now possible to use spinosad in organic agriculture in the EU. Fields studies compared three treatments to control CPB: 1) single spinosad treatment (24 g/ha active ingredient (a.i.), 2) first treatment Bacillus thuringiensis v. tenebrionis (B.t.t.), (60g/ha (a.i.)), second treatment (+4 days) B.t.t. (100 g/ha (a.i.)), 3) first treatment neem (25 g/ha (a.i.)), second treatment (+4 days) B.t.t. (l00 g/ha (a.i.)). All treatments displayed similar significant degree of effectiveness (78-82%) with regards to the damage leave area 25 days after treatment comparing to the untreated control.

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