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RECORD NUMBER: 528 OF 1214

OLS Field Name OLS Field Data
Main Title Foliar Leaching and Root Uptake of Ca, Mg and K in Relation to Acid Fog Effects on Douglas-Fir.
Author Turner, D. P. ; Tingey., D. T. ;
CORP Author Corvallis Environmental Research Lab., OR. ;NSI Technology Services Corp., Corvallis, OR.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/069;
Stock Number PB90-245242
Additional Subjects Fog ; Acidification ; Fir trees ; Plant ecology ; Nutrients ; pH ; Leaching ; Exposure ; Plant growth ; Experimental design ; Vegetation ; Forestry ; Reprints ; Air pollution effects(Plants) ; Root adsorption ; Environmental effects ; Acid rain
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NTIS  PB90-245242 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/03/1990
Collation 12p
Abstract The impact of acid fog on foliar leaching and root uptake of Ca, Mg, and K by Douglas-fir (Pseudotsuga menziesii) seedlings was examined. In a factorial experiment, 1-year old seedlings were grown in a solution culture at two levels of nutrient availability (low and moderate) and exposed twice a week (4 hr per event) for 12 weeks to fog at pH 5.6 or pH 3.1. Throughfall enrichment of Ca, Mg and K was determined from drip collectors at the base of each seedling and root uptake rates for trees under the moderate nutrient regime were evaluated by monitoring nutrient solution depletion. Throughfall enrichment was higher in the pH 3.1 fog than the pH 5.6 fog but much of the enrichment appeared to be wash off of precipitate from previous fogs. The amounts of nutrients coming off of the foliage with the low pH fog were small relative to the daily uptake rates. Foliar concentrations of K and Mg at the end of the exposures were lower under the low nutrient regime but were not affected by fog pH. Comparisons of wax weight and examinations of epicuticular wax by electron microscopy did not indicate a significant impact from exposure to the low pH fog. (Copyright (c) 1990 Kluwer Academic Publishers.)
Supplementary Notes Pub. in Water, Air and Soil Pollution, v49 p205-214 1990. Prepared in cooperation with NSI Technology Services Corp., Corvallis, OR.
NTIS Title Notes Journal article.
Title Annotations Reprint: Foliar Leaching and Root Uptake of Ca, Mg and K in Relation to Acid Fog Effects on Douglas-Fir.
Category Codes 68A; 57H; 57C; 48D
NTIS Prices PC A03/MF A01
Primary Description 600/02
Document Type NT
Cataloging Source NTIS/MT
Control Number 024227800
Origin NTIS
Type CAT