Phytotoxicity and Benzoxazinone Concentration in Field Grown Cereal Rye (Secale cereale L.)

Figure 5

Variation of total benzoxazinone concentration (sum of DIBOA-glucoside, DIBOA, and BOA) in shoot tissue of four rye cultivars between dates 37 and 121 (Julian dates) during the first year of experiments. Significant differences over time within each variety according to the Tukey-Kramer method () are indicated by different letters. Vertical bars represent standard errors at each sampling date.