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(A) Root length, (B) root diameter, (C) specific root length and (D) root length to leaf area ratio of Cullen cinereum, Kennedia nigricans and Lotus australis at the second harvest (i.e. with ten fully expanded main stem leaves) when grown at low, medium or high temperature with addition of 60 mg kg−1 of P as FePO4 (mean ± s.e., n = 4).
