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Growth and production of a short-rotation coppice culture of poplar—IV: Fine root characteristics of five poplar clones by N. Al Afas; N. Marron; C. Zavalloni; R. Ceulemans is a Engineering article available to read on EtoBox.

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Below-ground characteristics of five Populus clones, belonging to different species and parentages, were studied during the second growing season of the third rotation of a high-density coppice culture. Size (length, area and volume), biomass, nitrogen and carbon concentrations of three classes of fine roots (diameter classes of 0-1, 1-2 and 2-5 mm) were determined for four different soil layers. Fine root biomass varied significantly among clones and among soil layers. Clone Primo (Populus deltoides  Populus nigra) had the highest root biomass and the longest fine roots, while clone Hazendans (Populus trichocarpa  P. deltoides) had the lowest root biomass and shortest fine roots. The topsoil layer (0-5 cm) was very rich in fine roots; the fine root biomass and distribution of all clones decreased with increasing soil depth. Fine root area index (diameter classes of 0-1 and 1-2 mm) varied among clones, with higher values for clones Wolterson and Primo (3.6 and 3.7, respectively), while clones Hazendans and Columbia River had lower values (1.7 and 2.2, respectively). The absence of a significant correlation between fine root traits and above-ground biomass leads to the conclusion

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Author

N. Al Afas; N. Marron; C. Zavalloni; R. Ceulemans

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0961-9534)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)