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Properties of Several Fly Ash Materials in Relation to Use as Soil Amendments

^a School of Plant Biology, Univ. of Western Australia, 35 Stirling Highway, Crawley 6009, Western Australia, Australia
^b School of Earth and Geographical Sciences, Faculty of Natural and Agricultural Sciences, Univ. of Western Australia, 35 Stirling Highway, Crawley 6009, Western Australia, Australia

View larger version (35K): [in a new window]   Fig. 1. Water retention characteristics of selected soil and fly ash samples from locations in Western Australia and Queensland at different (-5, -25, -100, -250, and -1500 KPa) matric potentials. Data given are means of three replicates ± standard errors. Standard errors are not visible when smaller than the size of the symbols.

View larger version (35K): [in a new window]   Fig. 2. Water retention characteristics of (A) Karrakatta sand and (B) Joel sand with Kwinana fly ash (3 yr old, weathered) incorporated at different rates (% w/w) and at different (-5, -25, -100, -250, and -1500 KPa) matric potentials. Data given are means of three replicates ± standard errors. Standard errors are not visible when smaller than the size of the symbols.

View larger version (24K): [in a new window]   Fig. 3. Effect of Kwinana fly ash (3 yr old, weathered) incorporated at different rates (% w/w) with Karrakatta sand and Joel sand on plant-available water (-5 to -1500 KPa matric potentials). Data given are means of three replicates ± standard errors.