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" Phosphorus" plants in life role . Phosphorus fertilizers ” topic according to contents for free copy to take "Soil water regime and methods of its management"

A brief history of early phosphorus research
Dr. John Mitchell at the University of Saskatchewan recorded the first crop response to phosphorus in Western Canada in 1927. His groundbreaking research with radioactive-marked phosphorus fertilizer continued for nearly 20 years, with four main conclusions, which remain the pillars for phosphorus fertilizer management today: