Figure 5.

Elemental analysis and protein content after 2.5 weeks following the second treatment: (a) carbon (C), hydrogen (H), nitrogen (N) content, (b) C/N ratio; (±standard deviation, n = 3, α = 0.05); Ci - control cabbage inner leaves; Co - control cabbage outer leaves; D1i - dosage 1 (1 L/ha) on inner leaves; D1o - dosage 1 on outer leaves; D2i - dosage 2 (3 L/ha) on inner leaves; D2o - dosage 2 on outer leaves. (±error bars, n = 3, significance level α = 0.05, different letters indicate significant differences between samples, double letters indicate statistical similarities between samples).