Key points are not available for this paper at this time.
James D. Bever, Kristi M. Westover, Janis Antonovics, Incorporating the Soil Community into Plant Population Dynamics: The Utility of the Feedback Approach, Journal of Ecology, Vol. 85, No. 5 (Oct., 1997), pp. 561-573
Bever et al. (Wed,) studied this question.