Figure 3From: Rapid determination of leaf area and plant height by using light curtain arrays in four species with contrasting shoot architectureCalculated plant pixel area (average of 18 consecutive silhouettes differing by 10°) as a function of measured plant leaf area at different scanning speeds in rapeseed. Values in each panel indicate an increasing scanning speed during measurement and are plotted with a different symbol colour. A Scanning speed 0.9, 1.8, 3.6 m min−1. B Scanning speed 5.4, 9.0, 12.6 m min−1. C Scanning speed 16.2, 19.8, 23.4 m min−1. Correlation coefficients ranged between 0.9589 and 0.9865 (slopes all significant at P < 0.0001). Leaf area ranged between 64 and 350 cm2 (n = 15).Back to article page