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Sago Pondweed (Potamogeton pectinatus L.): A Literature Review


Table 3

Table 3. Elemental composition of aboveground green tissues of sago pondweed.
                         Unit of            Range or single
                         measurea            observation
  Element                                    (referenceb)
Aluminum (Al) ppm 400 (1)-2,700 (2) Barium (B) ppm 170 (3) Carbon (C) % 35.7-39.5 (4) Calcium (Ca) % 0.16 (5)-22 (1) Cadmium (Cd) ppm 3-26 (6) Chlorine (Cl) % 0.55-2.35 (7) Cobalt (Co) ppm 2.8 (8)-26.0 (4) Copper (Cu) ppm 8 (8)-103 (3) Iron (Fe) % 0 03 (5)-5 0 (1) Hydrogen (H) % 5.2-5.7 (4) Potassium (K) % 0.59 (1)-5.34 (5) Lithium (Li) ppm 13-25 (1) Magnesium (Mg) % 0.05 (9~6.08 (1) Manganese (Mn) % 0.01-0.53 (5) Molybdenum (Mo) ppm <65-<110 (4) Nitrogen (N) % 1.24 (5~6.01 (10) Sodium (Na) % 0.10 (9)-4.00 (5) Nickel (Ni) ppm 9-21 (1) Phosphorus (P) % 0.07 (11)-1.11 (5) Silicon (Si) % 0.5-1.05 (1) Strontium (Sr) ppm 120-530 (1) Vanadium (Va) ppm 1,650 (12) Zinc (Zn) ppm 12 (1~340 (6)
a Measurements refer to oven-dry matter in whole plants or various tissues, except Va, which refers to ash. High levels of Ca, Fe, and Mg likely are caused by external encrustations. b Reference: (1) Kollman and Wali 1976 (2) Peverly 1985;(3) Adams et al. 1973; (4) Neel et al. 19i3; (5) Van Vierssen 1982b; (6) Adams et al. 1980; (7) Ozimek 1978; (8) Varenko and Chuiko 1971, cited in Hutchinson 1975, (9) Riemer and Toth 1968; (10) Ho 1979; (11) Howard-Williams 1981, (12) Petkova and Lubyanov 1969, cited in Hutchinson 1975.
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