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Tolerance of seven perennial grasses to high nickel in sand culture

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Kopittke, P.M., Blamey, F.P.C., Kopittke, R.A., Asher, C.J. and Menzies, N.W. (2010) Tolerance of seven perennial grasses to high nickel in sand culture. Environmental Chemistry, 7 (3). pp. 279-286. ISSN 1448-2517

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Article Link: http://dx.doi.org/10.1071/en09100


Although grasses are commonly used to revegetate disturbed areas, comparatively little is known regarding the tolerance of perennial grasses to toxic levels of trace metals. A sand culture experiment was conducted to investigate the tolerance of seven perennial grasses to high concentrations of Ni. The activity of Ni2+ in solution that resulted in a 50% reduction in shoot growth ranged from 50 mu M for Sabi grass (Urochloa mosambicensis (Hack.) Dandy cv. Saraji) to 13 mu M for curly Mitchell grass (Astrebla lappacea (Lindl.) Domin). In most grasses, growth in the high-Ni2+ treatments resulted in shoot Ni concentrations at or above the toxicity threshold for consumption by cattle (100 mu g Ni g (1)). Based upon their tolerance to Ni, and the extent to which they translocate Ni to the shoots, Sabi grass, signal grass (Brachiaria decumbens Stapf. cv. Basilisk) and buffel grass (Cenchrus ciliaris (L.) cv. Biloela) appear well suited for the phytostabilisation of Ni-contaminated sites in subtropical and tropical regions.

Item Type:Article
Keywords:nickel toxicity phytostabilisation shoot growth symptoms soil toxicity growth serpentine plants ni Chemistry Environmental Sciences & Ecology
Subjects:Agriculture > Agriculture (General) > Agricultural chemistry. Agricultural chemicals
Agriculture > Agriculture (General) > Agriculture and the environment
Agriculture > Agriculture (General) > Conservation of natural resources
Animal culture > Rangelands. Range management. Grazing
Live Archive:17 Jan 2023 01:17
Last Modified:17 Jan 2023 01:17

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