Abstract
Abstract Thirty two‐day‐old seedlings of neem (Azadirachta indica) were transplanted into pots containing a subsurface Oxisol uninoculated or inoculated with Glomus aggregatum at three target soil solution P concentrations. While no evidence of Vesicular‐arbuscular mycorrhizal fungal (VAMF) colonization was noted in the uninoculated soil, neem roots were colonized in excess of 80% in the inoculated soil, and soil P did not influence VAMF colonization significantly. VAMF colonization led to significant increases in tissue P and dry matter accumulation at the first two increments of soil P, but not at the highest concentration. Dry matter yield of mycorrhizal neem at soil P concentration of 0.02 mg L‐1 was comparable to nonmycorrhizal growth of neem at soil P concentration of 0.2 mg L‐1. Based on these data neem was classified as a highly mycorrhizal‐dependent species.
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