Growth and development of flexible pine (Pinus flexilis James) at its introduction in Voronezh region
https://doi.org/10.21266/2079-4304.2024.248.171-191
Abstract
According to the forest introduction zoning Voronezh region is included in the zone of medium potential, where the economic effect of forest introduction measures is supposed to be 15-25% higher than the effect of cultivation of native species. Here one of the promising nut-bearing conifers is tested pine flexible (Pinus flexilis James). The aim of the study is to consider in comparison with the conditions of natural habitat development and condition of bent pine in the territory of Voronezh region. It was found that flex pine surpasses Scots pine in ornamentality, being a species with a high degree of adaptability to arid conditions and frost-resistant. By the age of 49 years, there are restrictions on further growth of trees in height. The range of values of taxation indicators at introduction, as well as in the conditions of growth in the area, agrees with the opinion that the pine has a fairly high level of quantitative genetic variability within populations. Trees resistant to the pathogen (Cronartium ribicola) were identified. At the same time, abundant and frequent branching should be considered an unfavorable sign of tree development if it does not occur from the initial stage (6–10 years). The scheme of placement in the area (4,5 × 3 m) is quite acceptable, provided that there are 3 seedlings with a distance of 1 m between them in one planting place.
About the Author
S. V. Levin
All-Russian Research Institute of Forest Genetics, Breeding and Biotechnology
Russian Federation
Russian Federation
Levin Sergey V. – PhD (Agriculture), research scientist of the Department of experimental study,
394087. Lomonosova str. 105. Voronezh
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Review
For citations:
Levin S.V. Growth and development of flexible pine (Pinus flexilis James) at its introduction in Voronezh region. Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii. 2024;(248):171-191. (In Russ.) https://doi.org/10.21266/2079-4304.2024.248.171-191
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