Fig. 2 Dry mass of leaves for 1992 and 1993 (data pooled, year effect not significant) from the top- (T/3), middle- (M/3), and bottom- (B/3) third of the mainstem; the Branch (Br) section; and the Total per soybean plant at R5. Within a plant section (e.g., T/3), bars labeled with the same letters are not significantly different by LSD at = 0.05