european elm การใช้

• Eleven large European elms fronted it on Tremont Street.
• Some species are tree pests in North America, including : European elm scale, azalea bark scale, oak eriococcin, crape myrtle bark scale, beech scale
• The NPS has used a number of methods to control this vector, the smaller European elm bark beetle ( Scolytus multistriatus ), by trapping and by spraying with insecticides.
• A well-known example of this is Dutch elm disease, caused by " Ophiostoma ulmi ", which is carried by the European elm bark beetle, " Scolytus multistriatus ".
• In fact, Mark Tobin, president of Hartney Greymont in Needham, extends the lives of a struggling group of European elms planted on Boston Common by John Hancock in 1790 by pruning their canopies " very hard ."
• In 2004, 80 trees were donated to the Greater London Council as part of the grower's European Elm City promotion; similar gifts were also made to Belfast, Cardiff ( Pontcanna Park ), and Hamburg ( the central City Park ).
• Well-known species are members of the type genus " Scolytus ", namely the European elm bark beetle " S . multistriatus " and the large elm bark beetle " S . scolytus ", which like the American elm bark beetle " Hylurgopinus rufipes ", transmit Dutch elm disease fungi ( " Ophiostoma " ).