Mycorrhizal colonisation responses of cotton grown in fresh non-sodic pasture topsoil ESP=0.7 (open bars), autoclaved non-sodic pasture topsoil ESP=0.7 (hatched bars), moderately-sodic soil ESP=14.1 (black bars) and highly-sodic soil ESP = 21.1 (grey bars) to no inoculum (NM), 20 g autoclaved inoculum (AM), and 20 g fresh inoculum (FM) banded 3 cm below the seeds (Experiment 2).