Record Display for the EPA National Library Catalog
RECORD NUMBER: 13 OF 40
|OLS Field Name||OLS Field Data|
|Main Title||Effects of Acid Rain on Apple Tree Productivity and Fruit Quality.|
|Author||Forsline, P. L. ; Musselman, R. C. ; Kender, W. J. ; Dee, R. J. ;|
|CORP Author||New York State Agricultural Experiment Station, Geneva. Dept. of Pomology and Viticulture.;Corvallis Environmental Research Lab., OR.|
|Additional Subjects||Growth ; Apple trees ; Air pollution ; Water pollution ; Tests ; pH ; Vegetation ; Injuries ; Germination ; Pollen ; Reduction ; Maturation ; Spraying ; Reprints ; Acid rain ; Air pollution effects(Plants) ; Water pollution effects(Plants)|
Mature 'McIntosh', 'Empire', and 'Golden Delicious' apple trees (Malus domestica) were sprayed with simulated acid rain solutions in the pH range of 2.5 to 5.5 at full bloom in 1980 and 1981. In 1981, weekly sprays were applied at pH 2.75 and pH 3.25. Necrotic lesions developed on apple petals at pH 2.5 with slight injury appearing at pH 3.0 and 3.5. Apple foliage had no acid rain lesions at any of the pH levels tested. Pollen germination was reduced at pH 2.5 in 'Empire'. Slight fruit set reduction at pH 2.5 was observed in 'McIntosh'. Even at the lowest pH levels no detrimental effects of simulated acid rain were found on apple tree productivity and fruit quality when measured as fruit set, seed number per fruit, and fruit size and appearance.