Study the effect of different zinc and cadmium levels on the yield of white radish plant in a calcareous soil
Message:
Abstract:
The current research has been carried out to evaluate the effect of zinc and cadmium on the yield of white radish plant in a calcareous soil using factorial experiments based on completely randomized design with different zinc (0¡ 20 and 50 mg/kg) and cadmium (0¡ 10 and 20 mg/kg) levels and three replications. The results showed that there is no significant difference on shoot dry and wet weight¡ plant height¡ length and number of leaves by pollution increment¡ unlike root of plant. Moreover¡ it has been found that the amount of zinc and cadmium uptake by plant is directly dependent on their concentration in root environment. However¡ the negative interaction of zinc and cadmium was observed in the studied soil and plant. In addition¡ the amount of transfer and accumulation of the aforementioned elements was not the same in different parts of the plant which represents a reduction in transfer coefficient of the metals from root to shoot as one of defensive mechanisms of plant against high densities of heavy metals in soil. Therefore¡ white radish plantation either in polluted soil or its irrigation with polluted water by zinc and cadmium is not recommended due to more accumulation of these metals in the edible parts of plants than other parts examined.
Language:
Persian
Published:
Journal of Agronomy and Plant Breeding, Volume:11 Issue: 1, 2015
Page:
8
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