Click on image to view larger version.
Fig. 7. Plots of least square (LS) means from repeated measures analyses of color measurements, reflectance index, leaf chlorophyll concentration, and clipping yield measurements from March 2001 to May 2003 on turfgrass plots. Treatments are date of fall fertilization: control (no fall fertilizer), 15 September, 15 October, 15 November, or 15 December. Error bars indicate standard error of the LS mean from repeated measures analyses. Significant differences were found among treatments for Commission Internationale de l' Eclairage (CIE) hue (p < 0.0001), CIE lightness (p < 0.0001), chlorophyll concentration (p = 0.0003), reflectance index (p < 0.0001), and dry matter clipping yield (p = 0.0011). Same letters within a plot indicate means not significantly different according to least significant difference test with Tukey–Kramer adjustment (
= 0.05).
