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R/FR (red to far-red ratio) is a key light signal for plants to detect the oncoming competition and initiate the shade avoidance syndrome. This study is aim to simulate the R/FR signal received by maize plants based on a 3D canopy radiative model. Optical properties of maize leaf were characterized by an adapted Cook-Torrance model for reflectance and a Lambert model for transmittance. Virtual maize...
Mechanical properties of two contrasting rice cultivars, P64S/E32 and SY63, were measured using 3-point bending tests performed on segments taken at the base and top of plant stems. The parameters of an elastic-plastic material constitutive law were fitted using a finite beam element model reproducing the 3-point bending tests. Both measured data and constitutive laws were compared between cultivars...
Characterization of bidirectional reflectance distribution of individual leaf is essential in canopy radiative transfer modeling. Measuring bidirectional reflection over reflectance hemisphere is a very complex and time-consuming work. Considering that leaf's reflection is a linear combination of specular and diffuse component, where specular reflection is centered on mirror direction in the principal...
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