Phosphorus uptake by plants was studied by applying to the soil the 32P-labeled Mg2P207 (magnesium pyrophosphate)...

 

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Phosphorus uptake by plants was studied by applying to the soil the 32P-labeled Mg2P207 (magnesium pyrophosphate) fertilizer, with a specific activity of 1.66x104Bq/g of Mg232P207. After 45 days, phosphorus was isolated from a plant as a 20 mg sample of Mg232P207 with an activity of 21Bq. What was the efficiency of the phosphorus uptake [i.e., the soil/plat transport coefficient]? Phosphorus uptake by plants was studied by applying to the soil the 32P-labeled Mg2P207 (magnesium pyrophosphate) fertilizer, with a specific activity of 1.66x104Bq/g of Mg232P207. After 45 days, phosphorus was isolated from a plant as a 20 mg sample of Mg232P207 with an activity of 21Bq. What was the efficiency of the phosphorus uptake [i.e., the soil/plat transport coefficient]?