Technical Report
 

Fluoride investigations in the Dalles area, 1968-1974

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https://ir.library.oregonstate.edu/concern/technical_reports/70795883g

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  • Percent fruit set of `Royal Ann' sweet cherries during 1967, 1969, and 1970 was found to increase with distance and decrease with increasing direction (from 0-140 degrees, based on East = 0 degrees) from the aluminum reduction plant in The Dalles, Oregon. Correlative studies also indicate that annual growth and number of buds and spurs (for growth years 1965-1969) increased as distance from the aluminum reduction plant increased, decreased with clockwise direction, and decreased as fluoride leaf levels increased. Similar results were found with air and vegetative fluoride sampling patterns, although these data were also influenced by wind direction. Areas closer to and downwind from the aluminum plant tended to have higher air and vegetative fluoride levels. Comparison studies of various fluoride air samplers at one location indicated that filter paper samplers were in close agreement with an automated bubbler system.
  • Published February 1976. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
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