Nutrient Uptake by Russet Burbank Potatoes as Influenced By Fertilization1
- T. L. Jackson and
- G. E. Carter2
Zinc and Mn deficiencies have been observed frequently in potatoes grown on eastern Oregon soils developed under arid conditions. The study was designed to evaluate effects of band and broadcast applications of ammonium sulfate (AS) and monocalcium phosphate (MCP) on yield and uptake of P, Zn, and Mn by Russet Burbank potatoes (Solanum tuberosum L.) grown on calcareous mineral soil deficient in N, P, Zn, and Mn.
Potatoes were grown under field conditions, harvested and evaluated. Fertilizer treatments were broadcast before planting and rototilled or banded at planting. Petiole samples to identify nutrient concentrations were taken when tubers were 2 cm in diam. Whole plants were harvested 3 weeks later to measure nutrient uptake.
Petiole concentrations and plant uptake of both Zn and Mn were greater when AS was banded than when broadcast, with or without band applications of Zn and Mn.
Highest P concentrations were found on check plots or when P alone was applied. Treatments producing increased Zn concentrations in plants were associated with reduced P concentrations. Banded AS with or without Zn and Mn produced the largest yield increase but resulted in reduced P uptake. Increased P uptake occurred only after Zn and Mn deficiencies were corrected. Moderate increases in uptake of Zn and Mn resulted from banding of MCP, Zn, and Mn.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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