Several factors affecting the growth and the metal uptake of pepper
plants treated with cadmium solutions have been studied. These include
concentration of cadmium, type of treatment, type of soil, plant
species, and some properties of solutions used for treatment such as
acidity, degree of salinity and temperature.
Cadmium
had an obvious effect on the growth of pepper plants. Foliar‐treated
plants were affected more than root‐treated plants. The least degree of
growth‐inhibition and of cadmium uptake was found in plants grown in
soils with high organic matter content. Various species of pepper plants
acted very differently towards cadmium treatment. Both
growth‐inhibition and cadmium uptake was increased in plants treated
with acidic, saline and hot solutions.
Several factors affecting the growth and the uptake of cadmium by
okra plants were studied using both root ‐ treatment and foliar ‐
treatment. These factors were the concentration of cadmium , type of
treatment, soil composition, presence of foreign ions, salinity, acidity
and temperature.
Both growth of plant and cadmium
uptake by plant were affected highly by the concentration of cadmium,
type of treatment, soil composition, salinity and temperature. Acidity
of solutions has only a little and irregular effect. A synergistic
combined effect of lead, copper and zinc with cadmium was observed on
the growth of plant but not regular on the uptake of cadmium.