Figure 2

Essential oil percentage (mL 100 g−1) and oil yield (L fed−1) on a dry weight basis of rosemary (R. officinalis) plants as influenced by foliar spray with Spirulina platensis at 0.0, 0.1, 0.2, and 0.4%, irrigation with heavy metal (Cd as Cd nitrate; Pb as lead acetate; Cd + Pb each at 100 ppm), either alone or in combination with 0.1% S. platensis, at the 1st and the 2nd cuts. Statistical analysis was carried out using Duncan test. Vertical bars represent LSD at 0.05 level and different letters show significant variation at 0.05 P.