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Forest Science Database

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Abstract

In 1936-37 pollinations of common Aspen by the giant form gave on extremely vigourous plant that proved to be tetraploid (2n = 76). The rest of the progeny included diploids, aneuploids (with 2n = 38-57), and some triploids (with 57 or about 57 chromosomes) which were also very vigourous. The...

Author(s)
Nilsson Ehle, H.
Citation
Svensk Papperstidning, 1938, 2, pp 5 pp.
Abstract

The eradication of the gypsy moth from New England is recognized as being impossible. Factors of outstanding importance in controlling the insect and preventing its spread beyond this region are the marked preference of the larvae for the foliage of certain tree species, notably Grey Birch,...

Author(s)
Behre, C. F.
Citation
Journal of Forestry, 1939, 37, pp 546-51
Abstract

Series of from 3 to 6 quarter-acre plots were established in mixed hardwood stands on each of 6 different sites. One plot of each series served as a control, and the others were supplied with varying amounts of nitrogenous fertilizer. Near the end of the same growing season, leaf samples, for...

Author(s)
Mitchell, H. L.; Chandler, R. F.
Citation
Black Rock Forest Bulletin, 1939, No. 11., pp 94 pp.
Abstract

A manual providing detailed practical information on the artificial propagation of Poplars based on investigations carried out by Russian Scientific Institutes in Forest Management and on other published and unpublished material. The manual is intended primarily for use in the zone of...

Author(s)
Miron, K. F.
Citation
Trud. vses, nauchno-issledov. Inst. lesnogo Khoz. 'VNIILKh', 1939, No. 3, pp 56 pp.
Abstract

Report on the investigations of the Institute, in various parts of the U.S.S.R., on shelterbelts, the melioration of sands, erosion control, nursery practice, treatment and storage of seed, sowing, mechanization of silvicultural work, forest protection, and the acclimatization and selection of...

Publisher
Goslestekhizdat, Moscow, Russia
Citation
Results of investigations in 1938 [by the All-Union Research Institute for Rural Melioration with the Aid of Forestry (VNIALMI)]., 1940, pp 172 pp.
Abstract

The following observations were made on the wood-destroying fungi encountered in the course of the writer's ecological studies of the forests of north-western Yunnan and south-eastern Sikang (East Tibetan Plateau) in relation to silvicultural procedure. The Yunnan Pine (Pinus yunnanensis) suffers...

Author(s)
Teng, S. C.
Citation
Sinesia, 1940, 10, 5-6, pp 363-395
Abstract

In spite of its common name, Cacoecia fumiferana favours Balsam Fir as a host species, and Spruce is only a second choice. The present bulletin discusses the amount of damage done by the insect, the effect of an outbreak on various host species, the course of an outbreak, effects of defoliation,...

Author(s)
Graham, S. A.; Orr, L. W.
Citation
Technical Bulletin. Minnesota Agricultural Experiment Station, 1940, No. 142, pp 27 pp.
Abstract

A critical review of a work by Soren Ve [Medd. Vestland. forstl. Forsokssta. No. 23 1940] on the forests and tree species of the upper Sogne Fjord valley, with reference to the effect of the diversified site conditions in the region. Group-selection cutting is advised for alpine forests. Natural...

Author(s)
Faegri, K.
Citation
Tidsskrift for Skogbruk, 1940, 48, pp 271-80
Abstract

A brief account is given of the Poplar research programme of the Dow Chemical Co. in Michigan, which includes experimental plantings to determine silvicultural characters and treatment and studies of growth rate, disease and insect resistance, and pulping properties of the wood. Propagation by...

Author(s)
Vogelsang, P.
Citation
Paper Trade Journal, 1941, 113, pp 20, 38-40
Abstract

A collective abstract of a whole series of articles in this number of Internationaler Holzmarkt. The forest land of Holland amounts to 258, 000 ha., or 8 per cent. of the total land area; only a small portion of this is under sustained-yield management. There are 162, 000 ha. of coniferous forest,...

Citation
Int. Holzmarkt, 1941, 5/6,

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