Fig. 3. Postharvest residual soil NO3–N concentrations for broccoli during the 1998–2001 winter growing seasons. Error bars, where shown, indicate significant differences (P 
0.05) according to Duncan's Multiple Range Test.
Fig. 3. Postharvest residual soil NO3–N concentrations for broccoli during the 1998–2001 winter growing seasons. Error bars, where shown, indicate significant differences (P 0.05) according to Duncan's Multiple Range Test.