 ISSN 0235-7224 ISSN 2029-0586 (online) |
2009 m. Nr. 3-4 Sitodiplosis mosellana – a new winter wheat pest in
Lithuania
During the period 2007–2008, observations of a new winter wheat pest – orange wheat blossom midge (OWBM) Sitodiplosis mosellana (Géhin) belonging to Diptera: Cecidomyiidae was carried out at the Lithuanian Institute of Agriculture located in central Lithuania. The first pest outbreak was observed in 2007. Screening of 123 breeding lines in 2007 showed that all of the genotypes screened were susceptible to OWBM. A detailed analysis of breeding populations showed that 44.3% of them had grain damage over 5%. Trapping of midge males with a pheromone in 2008 showed that the number of midges per day ranged from 0 to 327, depending on the assessment day and the location of traps. The period of intensive flying of midges matched with the susceptible winter wheat growth stage (BBCH46-59). Very few larvae were found in winter wheat ears later, possibly due to too low temperatures during the egg laying, hatching and development of larvae. Keywords: orange wheat blossom midge, air temperature, Triticum aestivum |
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