Canola takes up more cadmium and phosphorus from soil than spring wheat

Different sources of phosphorus ( P) fertilizer ( triple superphosphate and phosphate rocks) with different concentrations of cadmium (Cd) as an impurity were applied in different amounts to plots in a field experiment to produce soil with different concentrations of Cd. The plots were sown to canola ( rape, Brassica napus L.) and spring wheat ( Triticum aestivum L.). For each amount of Cd applied, the concentration of Cd in canola grain was about three times that in wheat grain. The concentration of P in canola grain was consistently about double that in wheat grain. Canola used all sources of P more effectively than wheat to produce dried shoots and grain.