Fluorine levels in crops of The Dalles area in 1962 and 1963
The fluorine contents of seven crops grown in The Dalles fruit area in 1962 and of three crops in 1963 are reported. These results are compared to similar data obtained from time to time since 1953. Leaf samples collected in The Dalles area July 16-20, 1962, ranged from 4 to 362 ppm fluorine and averaged 31 ppm, while those taken October 10-15 ranged from 17 to 474 ppm and averaged 92 ppm. Similar samples from Corvallis had less than 15 ppm. Alfalfa forages from The Dalles area averaged 31 ppm in July and 81 ppm in October with maximums of 84 and 166 ppm, respectively. Leaf scorch on apricot trees was observed in 1962 in many of The Dalles orchards, being more severe on the weaker trees. In 1963 the June 16-18 sweet cherry leaf samples ranged from 4 to 34 ppm, averaging 13 ppm fluorine, while those collected September 19-20 contained from 9 to 72 ppm, averaging 22 ppm. Similar samples taken in July and October, 1962, contained an average of 32 and 95 ppm, respectively. The data for peach trees were similar to those for cherry trees. Fluorine in the air was determined on a few samples in 1963. The amounts found varied from none to 12.9 ..mu..g F/M/sup 3/, (micrograms fluorine per cubic meter of air) varying with location and season.
- OSTI ID:
- 6453737
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fluorine levels in 1960 crops of The Dalles area
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303 -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
BUILDUP
CROPS
ELEMENTS
FLUORINE
FRUIT TREES
HALOGENS
NONMETALS
PLANTS
POLLUTION
TREES
UPTAKE