ISHS Acta Horticulturae 496: International Symposium on Urban Tree Health
STRESS TOLERANT PLANTS FOR URBAN LANDSCAPE - THE NEBRASKA-HUNGARY COOPERATIVE EXPERIENCE |
| Authors: | P.E. Read, G. Schmidt |
| Keywords: | stress-tolerance, trees, shrubs introduction, testing, propagation, Pyrus, Fraxinus |
| Abstract:
The continental middle parts of the United States and Hungary have many similarities in their climate and soils, so the stress-tolerant cultivars of the two regions are extremely important to each other. Until recently Hungary have been receiving these cultivars with 10–30 years of delay (via Great Britain - Holland - Germany - Austria) and Hungarian-bred urban trees did not reach America at all. The cooperation for mutual introduction and testing between the University of Nebraska-Lincoln and the University of Horticulture and Food Industry started in 1988, and from 1994 on was supported by the US-Hungarian S and T Fund (JFNo.385). In Nebraska, about 80 Hungarian genotypes (including, Populus alba x grandidentata 'Favorit' Chamaecyparis lawsoniana 'Lôvér', C.l. 'Globus', Ligustrum obtusifolium 'Fall Purple', Populus alba x grandidentata 'Favorit', Salix matsudana 'Golden Spiral',. Tilia tomentosa 'John Wagner') have been successfully propagated from which amount about 25 have reached that size or number so that they can be subject of mass propagation. Nursery and field tests are underway. In Hungary, about 70 American cultivars (including a total of 50 of Acer, Crataegus, Fraxinus, Platanus occidentalis, Pyrus calleryana, Rhus, Syringa, Taxus, Thuja, and Viburnum cultivars and 20 wild genotypes) have been introduced and tested for technical properties and about 20 of them for performance in urban parks or streets. The paper gives a full list of plants, some preliminary results on their propagation, nursery tests and urban trials and also some practical conclusions of the Project, based on the differences in the conditions between the two cooperating regions and also in the views regarding botany, plant application and plant breeding. | |
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