A new approach for estimating the phytotoxicity limits

A pot experiment was carried out on a Typic ustipsamment to study the effect of Cd concentration on the yield of wheat (Triticum aestivum) and soybean (Glycine max). Cd levels taken were 1, 5, 10, 20, 40, 80, and 160 μg g(-1) of soil. Three different statistical procedures were employed to evaluate...

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Bibliographic Details
Published in:Environmental monitoring and assessment 1987-11, Vol.9 (3), p.269-283
Main Authors: SINGH, A. K, RATTAN, R. K
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
Glycine max
Terrestrial environment, soil, air
Triticum aestivum
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Summary:A pot experiment was carried out on a Typic ustipsamment to study the effect of Cd concentration on the yield of wheat (Triticum aestivum) and soybean (Glycine max). Cd levels taken were 1, 5, 10, 20, 40, 80, and 160 μg g(-1) of soil. Three different statistical procedures were employed to evaluate the phytotoxicity limits. The non-linear regression technique was found to be more effective in calculating C 0 (threshold concentration) and C 100 (toxic concentration) in comparison to Cate and Nelson (1971) and Beckett and Davis (1977) procedures. This technique was unaffected by the nature of the distribution of the data and did not require any initial value of concentration as a starting point.
ISSN:0167-6369
1573-2959
DOI:10.1007/BF00419900