Articles
ROOT DEVELOPMENT OF CELERY MEASURED WITH MINIRHIZOTRONS AND CORE SAMPLING
Article number
563_31
Pages
247 – 252
Language
English
Abstract
In a field experiment, the temporal and spatial root development of rooted celery (Apium graveolens L. var. secalinum) was measured using two sampling methods (minirhizotrons and core sampling).
The roots expanded faster horizontally than vertically.
Four weeks after planting only a few root intersections measured with the minirhizotron were found at a depth of 20 cm, and the maximum depth at harvest was 25 cm.
High intersection counts at harvest were measured to a depth of 15 cm and to a horizontal distance of 25 cm.
A regression function was used to interpret the minirhizotron data.
For each sampling date, this function was fitted to the number of observed intersections influenced by the depth and horizontal distance.
Using the regression function, root length density measured by the core sampling method, was significantly correlated with the number of minirhizotron intersections calculated.
The roots expanded faster horizontally than vertically.
Four weeks after planting only a few root intersections measured with the minirhizotron were found at a depth of 20 cm, and the maximum depth at harvest was 25 cm.
High intersection counts at harvest were measured to a depth of 15 cm and to a horizontal distance of 25 cm.
A regression function was used to interpret the minirhizotron data.
For each sampling date, this function was fitted to the number of observed intersections influenced by the depth and horizontal distance.
Using the regression function, root length density measured by the core sampling method, was significantly correlated with the number of minirhizotron intersections calculated.
Authors
C. Feller, M. Fink
Keywords
minirhizotron, core sampling
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