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Weissteiner, C; Schenkenbach, N; Lammeranner, W; Kalny, G; Rauch, HP.
(2019): Cutting diameter on early growth performance of purple willow (Salix purpurea L.)
J SOIL WATER CONSERV. 2019; 74(4): 380-388. FullText FullText_BOKU

Cuttings are a common soil and water bioengineering technique used for slope stabilization and erosion control along rivers. Above- and belowground growth of cuttings, especially immediately after installation, have a strong impact on the protective performance. To assess the effects of diameter on the early growth performance of purple willow (Salix purpurea L.), freshly harvested (nondormant) cuttings of different diameters (5 to 24 mm) were planted as part of an outdoor raised-bed experiment from March to October of 2010. The aim of this study was to investigate the growth performance of purple willow cuttings and to gain deeper insight into the plant's development during the first growth stage (six months). After two months of growth, 99% of the cuttings sprouted, and the diameter had no statistically significant impact on the sprouting performance of the cuttings. During the first four months, aboveground biomass production (M-ag) was 5.7 and 4.4 (after two and four months, respectively) times higher than belowground biomass (M-bg). However, after six months, M-ag and M-bg were balanced. The diameter of the cuttings had a significant impact on biomass development at all of the time steps. The cuttings of the diameter class C (15 to 19 mm) produced the most M-ag and M-bg, with 33% and 34% of total M-ag and M-bg of all diameter classes after six months. Four months after planting, at least 80%, and after six months at least 90%, of the M-bg was allocated in the lowermost third of the cuttings. The observations showed high M-ag production for the entire period; M-bg production was relatively low during the first four months, which resulted in a diminished protective function of the roots until this specific point of development.
Authors BOKU Wien:
Kalny Gerda
Lammeranner Walter
Rauch Johann Peter
Weissteiner Clemens

Find related publications in this database (Keywords)
biomass development
cutting technique
Salix purpurea
soil and water bioengineering

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