The effect of sulphate on phosphorus availability on a Krasnozem soil

Abstract

In a series of experiments on a krasnozem soil with a high phosphate fixing capacity, it was shown that the uptake of phosphorus by tomatoes from applied monocalcium phosphate was increased by the addition of sulphate to the soil. It was concluded that the observed responses were not associated with a deficiency of sulphur, but that sulphate allowed a better utilization of the added phosphate by reducing the rate of phosphate fixation.