Growth characteristics and marketing of woody ornamentals prevent crop scheduling common in floriculture crops. However, many tasks in the production of woody ornamentals require coordination with the season and/or physiological state of the species. Since most woody ornamental nurseries produce many species or cultivars, a variety of tasks occur concurrently. This review highlights the major t...

Many cultivars of ornamental conifers are difficult to propagate. Cuttings may root poorly and graft success may be highly variable even in the hands of skilled, experienced propagators. Because of these problems, we conducted a detailed study of the physiology of graft formation in Picea pungens 'Hoopsi' scions grafted on Picea abies rootstocks with the purpose of identifying factors limiting ...

Plant symptoms caused by Pseudomonas syringae ...................................................1 Severity of Pseudomonas syringae ............................................................... ...2 Predisposing factors increase severity ........................................3 (Wounding, Plant Dormancy, Soil factors, Dual infections) ............... 3 Classification of Pseudomonas syringae ...

Twenty-nine herbaceous perennial ornamentals were evaluated for root galling after 2 months in soil infested with Meloidogyne hapla u n d e r greenhouse conditions. Plants such as Asclepias, Epimedium, Liriope, Lithospermura, Myosotis, Penstemon, Sidalecea, and Solidago did not have galls or egg masses present on the root system and were rated as resistant. Astrantia, Boltonia, Centranthus, and...

The concept of Essentially derived varieties (EDVs) was introduced in the UPOV 1991 act to protect the interests of the breeder of the initial variety. When a variety is considered as an EDV, authorisation for commercial exploitation is needed from the breeder of the initial variety. There is considerable debate going on about which approaches to use for determining essential derivation and als...