Tremendous Bee Extinction at the Upper Rhine Valley in 2008
Tremendous Bee Extinction at the Upper Rhine Valley in 2008
Tremendous Bee Extinction at the Upper Rhine Valley in 2008
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‣ Inadequ<strong>at</strong>e quality of seed tre<strong>at</strong>ment (lowdegree of adhesion) which causes abrasion‣ High drift when us<strong>in</strong>g conventional neg<strong>at</strong>ivepressure maize seeder‣ Huge maize grow<strong>in</strong>g area (mostly monoculture)‣ Clim<strong>at</strong>ic conditions (maize sow<strong>in</strong>g co<strong>in</strong>cidedwith <strong>the</strong> rape and pome bloom)‣ Enfeebled bee colonies (varroa mite)ConclusionsAs a consequence of <strong>the</strong> bee ext<strong>in</strong>ction seedtre<strong>at</strong>ment with Clothianid<strong>in</strong> and o<strong>the</strong>r pestides of <strong>the</strong>chemical class of neonicot<strong>in</strong>oids (Imidacloprid,Thiamethoxam) became forbidden <strong>in</strong> Germany. Amaximum level of abrasion for maize seed tre<strong>at</strong>ed withMethiocarb was issued. The seed of maize kerneltre<strong>at</strong>ed with Methiocarb with neg<strong>at</strong>ive pressure maizeseeder is only permitted if <strong>the</strong> seeder is modified toreduce drift by 90 %. The compliance of <strong>the</strong>regul<strong>at</strong>ions will be observed by <strong>the</strong> authorities.References1.VDLUFA, Methods book VII, 3rd Edition, VDLUFAVerlag, Darmstadt (Germany), <strong>2008</strong>.129
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