SSSAJ Journal of Natural Resources and Life Sciences Education
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Published in Soil Sci Soc Am J 24:313-316 (1960)
© 1960 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Allyl Alcohol on Micropopulation of Prairie Soils and Growth of Tree Seedlings1

M. Yatazawa, D. J. Persidsky and S. A. Wilde2

ABSTRACT

The treatment of mycorrhiza-free prairie Carrington silt loams with allyl alcohol at a rate of 25 to 200 gallons per acre produced a strong, stimulating effect on the growth of Monterey pine seedlings, originating from sterilized seed. Microbiological analyses revealed that the application of allyl alcohol causes a nearly instantaneous replacement of the native fungal population by Trichoderma viride; the application of allyl alcohol exceeding 100 gallons per acre considerably decreased the population of bacteria and actinomycetes. As indicated by soil and foliar analyses, the treatment considerably increased the availability of nutrients, especially phosphorus and potassium. The pronounced succulent nature of the seedlings suggested the effect of a growth-promoting substance. Some of the seedlings raised in prairie soils treated with allyl alcohol revealed well-developed coralloid mycorrhizae. The origin of the mycorrhizae-forming organism is uncertain.

NOTES

1 Contribution from Soils Department, University of Wisconsin, in cooperation with Wisconsin Conservation Department. Publication approved by the Director of the Wis. Agr. Exp. Sta., Madison. Presented before Div. V-A, Soil Science Society of America, Nov. 18, 1959, at Cincinnati, Ohio.

2 Visiting Scholar, Research Associate, and Professor of Soils, respectively.

Received for publication December 3, 1959. Accepted for publication February 29, 1960.






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