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From Ground to Grain: Tracing Phosphorus and Potassium in Flooded Rice Cultivar Grown on Histosols

Author

Listed:
  • Naba R. Amgain

    (Department of Soil, Water, and Ecosystem Sciences, University of Florida, Everglades Research and Education Center, Belle Glade, FL 33430, USA)

  • Yuchuan Fan

    (Department of Soil, Water, and Ecosystem Sciences, University of Florida, Everglades Research and Education Center, Belle Glade, FL 33430, USA)

  • Matthew T. VanWeelden

    (IFAS Extension, University of Florida, Everglades Research and Education Center, Belle Glade, FL 33430, USA)

  • Abul Rabbany

    (Everglade Research and Education Center, University of Florida, Belle Glade, FL 33430, USA)

  • Jehangir H. Bhadha

    (Department of Soil, Water, and Ecosystem Sciences, University of Florida, Everglades Research and Education Center, Belle Glade, FL 33430, USA)

Abstract

To trace the phosphorus (P) and potassium (K) content in flooded rice ( Oryza sativa L), 14 rice cultivars commonly grown in the Southern United States were evaluated for their P and K concentration in tissue and grain. Field experiments were conducted at two locations in Everglades Agriculture Area (EAA), where flooded rice was cultivated on organic Histosols. Soil pH and Mehlich-3 phosphorus (M3P) were significantly different between locations. At Site I, soil pH, M3P, and Mehlich-3 potassium (M3K) varied in the range of 6.8–7.1, 21.4–36.4 mg kg −1 , and 53.9–151.0 mg kg −1 , respectively. At Site II, soil pH, M3P and M3K varied in the range of 6.9–7.3, 11.2–20.5 mg kg −1 , and 64.8–104.1 mg kg −1 , respectively. Stem potassium was the only measured parameter that was significantly different among rice cultivars at both sites. At Site I and Site II, stem K ranged from 14.2–26.6 mg kg −1 and 10.4–19.4 mg kg −1 , respectively. No significant difference in yield among cultivars was observed at Site I, whereas Site II had a significant difference in yield among cultivars. At Site I and Site II, yields ranged from 3745–7587 kg ha −1 and 2627–6406 kg ha −1 , respectively. None of the cultivars ranked consistently in the same top and bottom position for each measured parameter. Total phosphorus (TP) concentration was highest in grain, whereas total potassium (TK) concentration was highest in the stem. Results suggest incorporation of rice stem into the soil could potentially add fertilizer back to the soil which helps in fertility management.

Suggested Citation

  • Naba R. Amgain & Yuchuan Fan & Matthew T. VanWeelden & Abul Rabbany & Jehangir H. Bhadha, 2022. "From Ground to Grain: Tracing Phosphorus and Potassium in Flooded Rice Cultivar Grown on Histosols," Agriculture, MDPI, vol. 12(8), pages 1-10, August.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:8:p:1250-:d:891280
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    References listed on IDEAS

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    1. Bhadha, Jehangir & Khatiwada, Raju & Galindo, Salvador & Xu, Nan & Capasso, Jay, 2018. "Evidence of Soil Health Benefits of Flooded Rice Compared to Fallow Practice," Sustainable Agriculture Research, Canadian Center of Science and Education, vol. 7(4).
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