Abstract
X-ray computed tomography
Highlights
Whilst aboveground plant development and productivity can usually be observed and quantified, at least on the plot scale, quantification of roots still pose significant challenges
It was expected that weight and volume of roots would be strongly correlated, and that testing if the volume measured in the 3D image correlates with the weight should be a good test of the calculation from the 3D image
Overall there was little correlation between measurements done on the roots and the parameters calculated from the 3D image (Table 1; Figure 1)
Summary
Whilst aboveground plant development and productivity can usually be observed and quantified, at least on the plot scale, quantification of roots still pose significant challenges. None of the methods available can quantify root biomass or turnover reliably. Most methods are destructive, and there are few methods available to observe roots as they grow. X-ray CT was first developed for medical applications, and was later used for a variety of industrial applications. The development scanners that could scan a variety of size classes, including small ones (micro-tomography) made it useful for geological applications, including soils [1]. X-ray CT has had a variety of useful applications in studies of soil physics [2]-[6]), but studies of biological properties have turned out to be dif- X-ray CT has had a variety of useful applications in studies of soil physics (e.g. [2]-[6]), but studies of biological properties have turned out to be dif-
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