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A review of black walnut (Juglans nigra L.) ecology and management in Europe

A review of black walnut (Juglans nigra L.) ecology and management in Europe

Nicolescu, Valeriu-Norocel ORCID: 0000-0003-1861-9402, Rédei, Károly, Vor, Torsten, Bastien, Jean-Charles, Brus, Robert, Benčať, Tibor, Đodan, Martina, Cvjetkovic, Branislav, Andrašev, Siniša, La Porta, Nicola, Lavnyy, Vasyl, Petkova, Krasimira, Perić, Sanja, Bartlett, Debbie ORCID: 0000-0002-5125-6466, Hernea, Cornelia, Pástor, Michal, Mataruga, Milan, Podrázský, Vilém, Sfeclă, Victor and Štefančik, Igor (2020) A review of black walnut (Juglans nigra L.) ecology and management in Europe. Trees, 34 (5). pp. 1087-1112. ISSN 0931-1890 (Print), 1432-2285 (Online) (doi:

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Black walnut (Juglans nigra L.) is a light-demanding, competition-intolerant, and tall forest tree species, introduced in Europe from North America at the beginning of the seventeenth century. It has an important economic role in Europe for producing wood and fruits, in agroforestry systems, as an ornamental tree for parks and avenues, for rehabilitation/restoration of degraded lands. The best sites for black walnut growth have warm and mild climates, with frequent and well-spread precipitation, and rich, deep, near neutral, well-drained and moist soils. Black walnut is a fast grower in youth and its height and diameter growth reach their peaks before age 30–35 years. It is globally the best known allelopathic species due to the juglone substance present in all parts of black walnut trees. The species is storm-resistant and not affected by any major pest or disease in Europe. It is regenerated by planting or direct seeding on bare land, in monocultures and mixed stands. The management of stands with black walnut, with a rotation period generally up to 80 years, include weeding (mandatory), cleaning-respacing (in dense stands), thinning (mostly from above), high and formative pruning (mandatory), with the aim of producing valuable wood for sliced veneer, solid furniture, flooring/parquet, cabinetry, panelling, sculpture, musical instruments, gunstocks.

Item Type: Article
Uncontrolled Keywords: black walnut juglans nigra L., ecology, growth and yield, management
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Science (SCI)
Last Modified: 24 May 2021 01:38

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