Abstract
Soil samples collected from four remnant prairie plant communities in Indiana were used as innoculum for pot cultures of Sudan grass seedlings (Sorghum sudanense). The growth of seedlings was correlated with the quality of the prairie remnant; the less degraded sites provided innoculum which resulted in the most vigorous plant growth in culture. Sudan grass root segments were harvested and prepared for assay of vesicular-arbuscular mycorrhizae. VAM was shown to be present in innoculated samples. Results indicate that soil collected from undisturbed prairie remnants may provide a better source of VAM innoculum for larger scale production of plants which associate with VA mycorrhizae.
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