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Investigations on Elm Disease conducted at the Entomological Laboratory at Wageningen in 1934


, : Investigations on Elm Disease conducted at the Entomological Laboratory at Wageningen in 1934. Tijdschr. PlZiekt, Wageningen, 41: 9, 240-260

In continued experiments in Holland, on keeping elm logs immersed in water, larvae of Scolytus scolytus, F., and S. multistriatus, Marsh., survived for 7 months if in their pupal cells at the moment of submersion; otherwise submersion for 5 months sufficed to kill them. Submersion for 6 months caused the trunks to lose all attraction for the females. Various chemicals were tried against larvae in the bark, but none proved satisfactory.

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