Voltage Gradient Measurements in Forest Trees

Publisher： Society of American Foresters

ISSN： 0022-1201

Source： Journal of Forestry, Vol.40, Iss.11, 1942-11, pp. : 872-876

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Abstract

Voltage gradients in forest trees are intimately associated with physiological processes and apparently reflect internal changes before these can generally be detected by the usual external measurements. The data presented in this paper are not given because of their own intrinsic value to silviculture, but to serve as an illustration of how this method may be used as a tool in forest research. The value of voltage gradient measurements in silvical investigations of many kinds, and in the related fields of forest entomology and pathology, has only recently been recognized and in the future should assume rapidly increasing importance.