Abstract

The effect of P and other mineral nutrients on the germination of basidiospores of the ectomycorrhizal fungus Rhizopogon luteolus in the rhizosphere of Pinus radiata was investigated in growth cabinet experiments. The presence of P and mineral nutrients in the substrate used for raising the seedlings depressed both spore germination and germ tube growth. P appeared to be more effective in depressing germination than other nutrients. The effect of mineral nutrients is considered to be plant mediated through root exudation.

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