The American Elm cultivarUlmus americana 'Iowa State' was cloned in the 1980s from a tree discovered by Professor Alexander (Sandy) McNabb of Iowa State University as the sole survivor in 40 acres (16 ha) of diseased elm at Burlington.[1]
The tree is possessed of a fastigiate, thickly-branched habit, but has relatively weak branch unions owing to acute angles of attachment leading to bark inclusions.
Pests and diseasesedit
'Iowa State' was reported in the American Horticulturist News Edition, 63(5):4, 1984, as "a natural selection from southeastern Iowa, highly resistant to Dutch elm disease when inoculated". The species as a whole is highly susceptible to Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola,[2] and highly preferred for feeding by the Japanese Beetle Popillia japonica[3][4] in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.[5][6]
Cultivationedit
The cultivar was trialed in Minneapolis.[1] One of the original plantings (1978) in the Dean Park area of Minneapolis had to be felled in 2012, 34 years later, after serious defects developed.[7]
Referencesedit
^ abSantamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
^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. S2CID 42980569.
^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. S2CID 7520439.
^. 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
^. Archived from the original on 2011-07-19. Retrieved 17 July 2017.
^Blair, (2013). Goodbye to 'Iowa State'. Elm Archives - Trees. University of Minnesota. [1]
April 17, 2024
ulmus, americana, iowa, state, american, cultivar, cloned, 1980s, from, tree, discovered, professor, alexander, sandy, mcnabb, iowa, state, university, sole, survivor, acres, diseased, burlington, speciesulmus, americanacultivar, iowa, state, originiowa, state. The American Elm cultivar Ulmus americana Iowa State was cloned in the 1980s from a tree discovered by Professor Alexander Sandy McNabb of Iowa State University as the sole survivor in 40 acres 16 ha of diseased elm at Burlington 1 Ulmus americana Iowa State SpeciesUlmus americanaCultivar Iowa State OriginIowa State University US Contents 1 Description 2 Pests and diseases 3 Cultivation 4 ReferencesDescription editThe tree is possessed of a fastigiate thickly branched habit but has relatively weak branch unions owing to acute angles of attachment leading to bark inclusions Pests and diseases edit Iowa State was reported in the American Horticulturist News Edition 63 5 4 1984 as a natural selection from southeastern Iowa highly resistant to Dutch elm disease when inoculated The species as a whole is highly susceptible to Elm Yellows it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola 2 and highly preferred for feeding by the Japanese Beetle Popillia japonica 3 4 in the United States U americana is also the most susceptible of all the elms to verticillium wilt 5 6 Cultivation editThe cultivar was trialed in Minneapolis 1 One of the original plantings 1978 in the Dean Park area of Minneapolis had to be felled in 2012 34 years later after serious defects developed 7 References edit a b Santamour Frank S Bentz Susan E May 1995 Updated Checklist of Elm Ulmus Cultivars for use in North America Journal of Arboriculture 21 3 122 131 Retrieved 20 June 2016 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 S2CID 42980569 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 S2CID 7520439 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 Elm Leaf Beetle Survey Archived from the original on 2011 07 19 Retrieved 17 July 2017 Blair 2013 Goodbye to Iowa State Elm Archives Trees University of Minnesota 1 Retrieved from https en wikipedia org w index php title Ulmus americana 27Iowa State 27 amp oldid 1170200935, wikipedia, wiki, book, books, library,
