(A) Total dry weight (partitioned into root, stem and leaf) at the second harvest, (B) root mass ratio (RMR) at the second harvest (i.e. with ten fully expanded main stem leaves) and (C) relative growth rate (RGR) between the first and second harvests of Cullen cinereum, Kennedia nigricans and Lotus australis when grown at low, medium or high temperature with addition of 60 mg kg−1 of P as FePO4 (mean ± s.e., n = 4). Th error bars above the high temperature treatment in (A) are for the dry weight of plants that received 60 mg kg−1 of P as KH2PO4; in (C), RGR was calculated using the log-transformed treatment means at the first and second harvest and therefore the s.e. could not be calculated.