Figure 3
Effect of 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 S. platensis at 0.1% on photosynthetic pigments (mg g−1 dry wt) in the leaves of rosemary (Rosmarinus officinalis) plants at first cut. 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.
