Summary
A study was conducted on the growth and nutrient uptake of Russet Burbank potatoes at Logan, Utah. The maximum yield of tops was 95 days, after planting, at which time they composed 49 per cent of the total plant weight. At harvest time the tubers accounted for 78 per cent of the total weight of the plant.
The tubers increased about 147 pounds per acre during a 14-day period after a killing frost.
After the 95th day, the total amount of nutrients contained in the tops decreased continuously. The nutrients increased continuously in the tubers. Apparently nutrients were translocated in substantial quantities from the tops to the tubers beginning at the 95th day and continuing throughout the growth period.
The week 88–95 days after planting was the period during which the maximum rate of absorption of nitrogen, phosphorus, and potassium occurred in the tubers. During this time the tubers absorbed 1.96 pounds nitrogen, 0.23 pounds phosphorus and 2.37 pounds of potassium per acre per day.
This crop of potatoes absorbed 139 pounds of nitrogen, 11.6 pounds of phosphorus, and 135 pounds (124th day) of potassium per acre to produce 510 bushels per acre (fresh weight). The tubers accounted for 98 pounds of the nitrogen, 9.7 pounds of phosphorus, and 100 pounds of potassium taken up by this crop of potatoes.
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Contribution of the Western Soil and Water Management Research Branch, Soil and Water Conservation Research Division, Agricultural Research Service, USDA, in cooperation with the Utah Agricultural Experiment Station, Logan, Utah.
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Jackson, R.D., Haddock, J.L. Growth and nutrient uptake of russet burbank potatoes. American Potato Journal 36, 22–28 (1959). https://doi.org/10.1007/BF02877211
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DOI: https://doi.org/10.1007/BF02877211