Summary
The yield and specific gravity readings were obtained for potatoes grown with 27 fertilizer treatments having different rates of nitrogen, phosphorus and potassium. The 27 treatments consisted of all possible combinations of three rates of nitrogen, phosphorus and potassium. Nitrogen was tested at the rates of 15, 30 and 45 pounds per acre. Phosphorus and potassium were tested at the rates of 30, 45 and 60 pounds per acre.
An increase in yield was obtained with each increase in the rate of nitrogen, phosphorus and potassium.
A decrease in specific gravity was obtained with each increase in the rate of nitrogen and potassium. The decrease in specific gravity with the potassium was attributed to the chloride anion.
An increase in specific gravity was obtained with each increase in the rate of phosphorus.
Marked differences in specific gravity were obtained between fertilizers having different rates of nitrogen, phosphorus and potassium.
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Fineman, Z.M. The influence of fertilizers on yield and specific gravity of potatoes grown in Alaska. American Potato Journal 24, 82–89 (1947). https://doi.org/10.1007/BF02884592
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DOI: https://doi.org/10.1007/BF02884592