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Abstract

This research paper is a thesis presented to the Faculty of Agriculture and Forestry of the University of Helsinki in 1996. It is composed of a main section reviewing the research carried out (Introduction; Aims of the study; Materials and methods; Results and discussion; Conclusion; and...

Author(s)
Hytönen, J.
Publisher
Metsäntutkimuslaitos (Finnish Forest Research Institute), Helsinki, Finland
Citation
Metsäntutkimuslaitoksen Tiedonantoja, 1996, No. 586, pp 49 + 111 pp.
Abstract

In a study of the number of coppice shoots on stumps of B. pubescens and P. tremula in a conifer [Pinus sylvestris] regeneration area, young Birch and Aspen trees were felled at various times during the season when the ground was not frozen. In general, the time of felling had little effect on the...

Author(s)
Etholen, K.
Citation
Folia Forestalia, Institutum Forestale Fenniae, 1974, No.213, pp 16 pp.
Abstract

In a trial in N. Finland, seedlings of Alnus incana (a), Populus tremula X P. tremuloides (b), Salix 'Aquatica Gigantea' (c) and S. phylicifolia (d) were planted at various spacings and their weight yield and height growth were measured at the end of the first year. Initial spacing had the greatest ...

Author(s)
Pohjonen, V.
Citation
Silva Fennica, 1974, 8, 2, pp 115-126
Abstract

The site requirements of Populus tremula X P. tremuloides are discussed, and it is suggested that it could be grown in many places in Finland, though damage by moles is a risk. In fertilizer trials, N favoured the growth of seedlings, but P and K had no clear effect. Susceptibility to Valsa nivea...

Author(s)
Saloniemi, M.
Citation
Metsataloudellinen Aikakauskirja, 1965, 82, 4, pp 136, 156-8
Abstract

Trials at Vaajakoski, central Finland, have shown at the end of the 5th growing season lower mortality for P. tremuloides x P. tremula than for P. tremula (11% and 27% respectively), and greater mean height (154: 100). In 1961, when the plants were 12 years old from seed, total yield was 4 times...

Author(s)
Oskarsson, O.
Citation
Metsataloudellinen Aikakauskirja, 1962, No. 5/6, pp 205-7, 198
Abstract

Presents tables relating branchiness, stem form, stem rot, and other defects to age of stands and/or diameter and/or height of trees, also bark characters and the interrelation of defects. Length of clear stem, length of live crown and the % of decayed stem all increase with age and size, and also...

Author(s)
Tikka, P. S.
Citation
Metsatieteellisen tutkimuslaitoksen julkaisuja, 1956, 45, 3, pp 54
Abstract

Discusses the genus, its distribution, hybrids, site requirements, growth, utilization, breeding and research, and possibilities in Finland. Species and hybrids successful in Finland are discussed. P. tremula X tremuloides has given good results. The need to develop a form of P. tremula less...

Author(s)
Laitakari, E.
Citation
Metsataloudellinen Aikakauskirja, 1954, No. 1, pp 11-16
Abstract

Reports in detail on an extensive series of strength tests by standard Madison methods, with tables and graphs to illustrate the results obtained. For the conifers the summerwood % was also determined. To indicate something of the range of variation in strength properties, the author presents...

Author(s)
Jalava, M.
Citation
Metsatieteellisen tutkimuslaitoksen julkaisuja, 1945, 33, 3, pp 1-66

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