FIELD: agriculture. SUBSTANCE: toxicity of soil contaminated with pollutants is determined using test-plants of Lemnaceae family. Growth coefficient of Lemnaceae on the soil aqueous extracts and specific color of duckweed leaves after effect of each contaminant is used as an index of the soil toxicity. EFFECT: improved method of toxicity assay. 2 cl, 1 tbl
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Authors
Dates
1997-11-20—Published
1996-01-24—Filed