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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 18, Number 3 (1967) → Growth of Monterey Pine Seedlings in Out Wash Sand Improved by Syenitic Granite with Excessive Watering

Growth of Monterey Pine Seedlings in Out Wash Sand Improved by Syenitic Granite with Excessive Watering

In this study, the addition of syenite granite to outwash sand caused significant growth improvement of Monterey pine seedlings only in excessively watered soil, although some improvement was noted in moderately watered soil. The ability of forest trees to utilize potassium present in unweathered silicate rocks and minerals has been repeatedly demonstrated. The conversion of this element into available form is largely accomplished by mycorrhizal fungi and chelating compounds produced by decomposition of root sloughings and fungal mycelia (2, 4, 1, 3). These previous Wisconsin investigations led to the present study which appraises the effect of soil moisture and corresponding soil aeration on the release of available potassium from syenitic granite.


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Author(s): W. L. Trautman, Jaya G. Iyer

Publication: Tree Planters' Notes - Volume 18, Number 3 (1967)

Volume: 18

Number: 3