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Forests 2017, 8(5), 164; doi:10.3390/f8050164

Influence of Cutting Type and Fertilization in Production of Containerized Poplar Plants

Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, SE-230 53 Alnarp, Sweden
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Academic Editor: Reynaldo Campos Santana
Received: 1 March 2017 / Revised: 25 April 2017 / Accepted: 8 May 2017 / Published: 11 May 2017
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Abstract

Most poplar plantations are planted on marginal agricultural land, but poplar plantations also hold the potential for increased profits compared to plantations of other species on non-agricultural, previously forested land. To date, the establishment of poplar plantations on previously forested land is limited by the production of suitable containerized poplar stock for planting. The objective of this study is to investigate how different cutting quality and fertilizer treatments influence height, diameter, and root biomass growth and root-to-shoot ratio, all important variables for plant establishment. Our results show that fertilization increases plant growth and that single-bud and two-bud cuttings with cutting diameters of 5 to 10 mm can be used in the production of containerized plants. Root biomass was similar between these plant types but the number of roots per plant was higher if two-bud cuttings were used. In contrast to fertilized plants, only one cutting type (two-bud 10 mm) grew to a sufficient height and diameter for use in poplar plantation establishment. Interestingly, the root-to-shoot ratio for this cutting type was 0.16 while the ratio for the same cutting type is 0.11 if fertilized. Together, these results suggest that most types of poplar cuttings can be used to establish poplar plantations if fertilizer is used and that the largest cutting type (two-bud 10 mm) might be more suitable to establish poplar plantations at harsh sites, thus reducing the cost of poplar plant production. View Full-Text
Keywords: Populus trichocarpa; cutting type; production of containerized plants; plant development; fertilization Populus trichocarpa; cutting type; production of containerized plants; plant development; fertilization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Böhlenius, H.; Fransson, T.; Holmström, E.; Salk, C. Influence of Cutting Type and Fertilization in Production of Containerized Poplar Plants. Forests 2017, 8, 164.

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