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Potato Phosphorus Response in Soils with High Value of Phosphorus

Author

Listed:
  • Ahmed Jasim

    (Department of Ecology and Environmental Sciences, University of Maine, Orono, ME 04469, USA)

  • Lakesh K. Sharma

    (Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA)

  • Ahmed Zaeen

    (Department of Ecology and Environmental Sciences, University of Maine, Orono, ME 04469, USA)

  • Sukhwinder K. Bali

    (Deparetment of Agroecology, University of Florida, Gainesville, FL 32611, USA)

  • Aaron Buzza

    (Aroostook Research Station, University of Maine, Presque Isle, ME 04769, USA)

  • Andrei Alyokhin

    (Department of Biology, University of Maine, Orono, ME 04469, USA)

Abstract

Phosphorus (P) is an element that is potatoes require in large amounts. Soil pH is a crucial factor impacting phosphorus availability in potato production. This study was conducted to evaluate the influence of P application rates on the P efficiency for tuber yield, specific gravity, and P uptake. Additionally, the relationship between soil pH and total potato tuber yield was determined. Six rates of P fertilization (0–280 kg P ha −1 ) were applied at twelve different sites across Northern Maine. Yield parameters were not responsive to P application rates. However, regression analysis showed that soil pH was significantly correlated with total potato tuber yield( R 2 = 0.38). Sites with soil pH values < 6 had total tuber yields, marketable tuber yields, tuber numbers per plant, and total tuber mean weights that were all higher than these same parameters at sites with soil pH ≥ 6. All sites with soil pH< 6 showed a highly correlated relationship between P uptake and petiole dry weight ( R 2 = 0.76). The P application rate of 56 kg P ha −1 was the best at sites with a soil pH < 6, but 0–56 kg P ha −1 was the best at sites with soil pH ≥ 6.

Suggested Citation

  • Ahmed Jasim & Lakesh K. Sharma & Ahmed Zaeen & Sukhwinder K. Bali & Aaron Buzza & Andrei Alyokhin, 2020. "Potato Phosphorus Response in Soils with High Value of Phosphorus," Agriculture, MDPI, vol. 10(7), pages 1-14, July.
    • Handle: RePEc:gam:jagris:v:10:y:2020:i:7:p:264-:d:379889
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