The American ElmcultivarUlmus americana 'Morden' was cloned from a selection made by the Dominion Experimental Farm, Morden, Manitoba, in 1939 on account of its ability to withstand severe ice storms without breakage.[1]
Fast-growing and ultimately large, 'Morden' has been described as "rather coarse".[1][2]
Pests and diseasesedit
The tree is not known to have a resistance to Dutch elm disease (see Cultivation). No other specific information available, but the species generally is moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola,[3] and highly preferred for feeding by the Japanese Beetle Popillia japonica[4][5] in the United States. U. americana is the most susceptible of all the elms to verticillium wilt.[6]
Cultivationedit
The tree was first marketed by the Patmore Nurseries, Brandon, Manitoba, circa 1948. A specimen planted in the Longenecker Horticultural Gardens at the University of Wisconsin–Madison Arboretum[7] in 1956 had died by 1974 "probably from Dutch elm disease"; no others are known to remain in cultivation.
^Miller, Fredric; Ware, George (2001-02-01). "Resistance of Temperate Chinese Elms (Ulmus spp.) to Feeding by the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae)". Journal of Economic Entomology. 94 (1). Oxford University Press (OUP): 162–166. doi:10.1603/0022-0493-94.1.162. ISSN 0022-0493. PMID 11233108.
^Miller, Fredric; Ware, George; Jackson, Jennifer (2001-04-01). "Preference of Temperate Chinese Elms ( Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae)". Journal of Economic Entomology. 94 (2). Oxford University Press (OUP): 445–448. doi:10.1603/0022-0493-94.2.445. ISSN 0022-0493. PMID 11332837.
^. Archived from the original on 2011-07-19. Retrieved 17 July 2017.
^Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN0-85199-529-2
^Arboretum News, Vol. 9, No. 1, January 1960. University of Wisconsin
April 12, 2024
ulmus, americana, morden, american, cultivar, cloned, from, selection, made, dominion, experimental, farm, morden, manitoba, 1939, account, ability, withstand, severe, storms, without, breakage, speciesulmus, americanacultivar, morden, origindominion, experime. The American Elm cultivar Ulmus americana Morden was cloned from a selection made by the Dominion Experimental Farm Morden Manitoba in 1939 on account of its ability to withstand severe ice storms without breakage 1 Ulmus americana Morden SpeciesUlmus americanaCultivar Morden OriginDominion Experimental Farm Morden Manitoba Canada Contents 1 Description 2 Pests and diseases 3 Cultivation 4 ReferencesDescription editFast growing and ultimately large Morden has been described as rather coarse 1 2 Pests and diseases editThe tree is not known to have a resistance to Dutch elm disease see Cultivation No other specific information available but the species generally is moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola 3 and highly preferred for feeding by the Japanese Beetle Popillia japonica 4 5 in the United States U americana is the most susceptible of all the elms to verticillium wilt 6 Cultivation editThe tree was first marketed by the Patmore Nurseries Brandon Manitoba circa 1948 A specimen planted in the Longenecker Horticultural Gardens at the University of Wisconsin Madison Arboretum 7 in 1956 had died by 1974 probably from Dutch elm disease no others are known to remain in cultivation References edit a b Green Peter Shaw 1964 Registration of cultivar names in Ulmus Arnoldia 24 6 8 Arnold Arboretum Harvard University 41 80 Retrieved 16 February 2017 Photograph of Morden horticopia info Miller Fredric Ware George 2001 02 01 Resistance of Temperate Chinese Elms Ulmus spp to Feeding by the Adult Elm Leaf Beetle Coleoptera Chrysomelidae Journal of Economic Entomology 94 1 Oxford University Press OUP 162 166 doi 10 1603 0022 0493 94 1 162 ISSN 0022 0493 PMID 11233108 Miller Fredric Ware George Jackson Jennifer 2001 04 01 Preference of Temperate Chinese Elms Ulmus spp for the Adult Japanese Beetle Coleoptera Scarabaeidae Journal of Economic Entomology 94 2 Oxford University Press OUP 445 448 doi 10 1603 0022 0493 94 2 445 ISSN 0022 0493 PMID 11332837 Elm Leaf Beetle Survey Archived from the original on 2011 07 19 Retrieved 17 July 2017 Pegg G F amp Brady B L 2002 Verticillium Wilts CABI Publishing ISBN 0 85199 529 2 Arboretum News Vol 9 No 1 January 1960 University of Wisconsin Retrieved from https en wikipedia org w index php title Ulmus americana 27Morden 27 amp oldid 1170073418, wikipedia, wiki, book, books, library,
