Fig. 10

Projected leaf area and aerial dry mass determined at harvest for lettuce plants grown in field conditions with different light treatments (same notation as in Figs. 9, 10). a Mean projected leaf area at harvest (37 DAP). b Plant dry mass at harvest (37 DAP). Different letters indicate significant differences between treatments (ANOVA, Tukey tests, α = 0.05). Error bars indicate standard deviation for a minimum of 30 plants