The inhibition influence of risky elements cations on soya bean yield | Inhibičný vplyv katiónov rizikových prvkov na úrodu sóje
2009
Bystrická, J., Slovak Univ. of Agriculture in Nitra (Slovak Republic) | Tomáš, J. | Árvay, J.
Lead and cadmium influence on ecosystem, its risk for man from the standpoint of carcinogenity, mutagenity and teratogenity are discussed problem. Nowadays the attention is paid not only to content of individual heavy metals in system soil-plant-foodstuff, but also to survey of individual interactions and mutual influencing of heavy metals with some microelements. Obtained results suggest that individual application of lead and cadmium into the soil (lead 200 mg per kg, cadmium 10 mg per kg) had negative influence not only on the yield of soya bean, but also on evaluated qualitative parameters. In the case of added lead the yield lowered by 19.3 % when compared with control variant and in the case of added cadmium into the soil the yield also lowered (by 35.9 % when compared with control). When the combinations of lead + zinc (80 mg/kg – variant B) and another one (cadmium + zinc - variant E) were added into the soil, only moderate lowering of soya bean yield was observed (by 8.4 % and by 10.1 %, respectively) when compared to control variant, what could be cleared probably by positive effects of added zinc cations. Common applications of lead and zinc affected the decline of assessed lead content in dry matter of soya bean by 0.36 mg per kg, while in variant B (200 mg per kg) this value was 0.74 mg per kg. When the combination of cadmium and zinc was applied (variant E) the similar results were gained. While the individual dose of cadmium into the soil (variant D) had enhanced its content in dry matter of soya even to the value 3.41 mg per kg. The latter affecting of zinc declined this value on 0.19 mg per kg what could be positively summarized.
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