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(T/FF233) Biotesting for toxiatis of some pesticides and the decay of them. Biyasheva, Z.1, Olifirov, S.1, 1 ABSTRACT- The presence of toxicological effects was determined by comporison of the number of organisms in control group and in experiment (test) group. Calculation of organisms was camed out by methodology. The results on the decay of pesticides were obtained after 3 months exposure to light, a similar process as commonly found literature. Metodology for analysis of decay of pesticides in products was the same. It was concluded, that apron, vindidat, kuprozan (5 mg/l) and propazin middle and chronic toxicities; byleton , atrazin, simazin and benlat did not show toxicological effects, fungicide byleton had insignificant proliferation in 24 hours exsperiment , but after 72 hours of incubation no effect was detected, simazin caused proliferation after 24 hours and 72 hours incubation; kuprozan (50 mg/l) showed acute toxicity and caused death in 85% of the organisms within 15 minutes. Results of decay in 3 month exposure of pesticides to light: kuprozan , simazin and propazin showd acute toxiaties, with 100% of test organisms dieting within 15 minutes ; byleton did not show any toxic effects but there was proliferation of organisms; apron, windidat and benlat showed subacute and chronic toxicities; proliferation effect of simazin was identical to that of control group. All data was treated statistically with a 95% confidence interval around the mean .The following recommendation are made based on the results from the above study: kuprozan in concentration of 50 mg/l and propazin to be excluded from use in all produce in open and closed soils because of high toxicities; kuprozan (5 mg/l) in desired , to by used in low concentration only soil fungicide and for as a seed dressing in technical products because of its high toxicidg. The fungicide apron and vindidat show a weaker toxic effect companion to other mixtures and are recommended for use one vine growing and beny producing piants, grains, and to maintain not less that 30 days. Benlat, simazin and byleton do not demonstrate toxic effects. Key words: cytotoxicity, teratogenesis, decay, fungicide |
