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October 10, 2025

Outplanting Survival and Growth of Ponderosa Pine Seedlings Inoculated with Pisolithus tinctorius in South Dakota

Key Points

Survival of ponderosa pine seedlings inoculated with P. tinctorius increased by 18% over two years compared to control seedlings.
Significant increase in plot volume index observed due to the presence of P. tinctorius after two growing seasons.
Ectomycorrhizae established for two years on seedlings did not affect seedling height or stem caliper measurements.
Mycorrhizal treatment involved using vegetative mycelia in nursery soil, enhancing seedling performance in prairie conditions.

Abstract

Abstract Ponderosa pine ( Pinus ponderosa Laws.) forms an ectomycorrhizal relationship with Pisolithus tinctorius when grown in nursery soil containing vegetative mycelia of this symbiont. The ectomycorrhizae persist for 2 years on seedlings planted on a prairie soil. Survival of ponderosa pine seedlings with P. tinctorius was 18 percent greater after two growing seasons than seedlings with mycorrhizae which developed in the nursery following soil fumigation. Although mycorrhizal treatment had no effect on seedling height or stem caliper after 2 years, a significant increase in plot volume index due to P. tinctorius was observed after the second growing season. Forest Sci. 27:277-280.

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Cite This Study

Bear et al. (Mon,) studied this question.

synapsesocial.com/papers/68e865147ef2f04ca37e51cf https://doi.org/https://doi.org/10.1093/forestscience/27.2.277

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