Nickel may be a potential cause of damage to plant and a health hazard to man by being transferred to him through plant. In this study the effect of nickel treatment on the growth of egg‐plant has been studied. Both root‐applied treatment and foliar‐applied treatment have been used. The effect of nickel treatment on the nickel concentration in the various parts of plant has been studied. The effect of nickel treatment on the total nickel content of the various parts of plant and the percentage of this nickel content from the total nickel content of the whole plant has been also looked into.
The effect of root‐treatment of cauliflower, spinach, and parsley
plants with lead and cadmium were studied. Both metal ions showed
obvious growth inhibition of treated plants with cadmium having higher
toxicity on growth than lead.
Cadmium was more concentrated in the
edible parts of the three treated plants whereas lead was more
concentrated in the edible parts of cauliflower and spinach plants only.
Metal
ion concentrations and total metal ion content of treated plants
increased with the increase of concentration of cadmium or lead ions in
solutions used for treatment. The uptake of metal ion per unit
concentration decreased in treated plants with the increase of
concentration of cadmium or lead ions in solutions used for treatment.
Metal ion concentration and metal uptake were higher in the plants treated with cadmium than those treated with lead.