“Research shows average phosphate levels of 70% and potassium levels of 50% in Iran’s farmlands are lower than critical levels,” Hadi Asad-Rahmani was also quoted as saying by IRIB News.
According to the official, demand for chemical fertilizers is close to 5 million tons per year in the country, with potassium, phosphate and nitrogen fertilizers accounting for 4.5 million tons of the total volume.