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.
Journal of Environmental Science and Health, Part A, Volume 30, Issue 9 October 1995 , pages 2027 - 2040