Zohra Omouri Author

Research Article Open Access

Phytotoxicity of Bismuth Nitrate and Bismuth Citrate on Germination and Growth of Lolium Perenne Exposed on Filter Paper and on Artificially Contaminated Soil

Author(s):

Zohra Omouri*, Jalal Hawari, Michel Fournier and Pierre Yves Robidoux

Phytotoxicity of Bi citrate and Bi nitrate on perennial ryegrass were evaluated using standardized filter paper and soil tests. Endpoints included seeds germination, and root and shoot growth. The results showed that Bi nitrate seemed to be more toxic than Bi citrate, and root growth more sensitive than seeds germination and shoot growth. Filter paper test indicated that Bi nitrate significantly decreased root elongation (IC50=60.34 mg/L) at tested concentrations ≥ 30.35 mg/L
and seedling germination at 485 mg/L. Bi citrate decreased significantly root elongation (IC50=139.5 mg/L) and seedling germination at concentration ≥ 99.52 mg/L and at 398.08 mg/L, respectively. Data from OECD artificial soil spiked with Bi nitrate indicated a significant reduction on root mass at 485... view more»

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