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U.S. Department of Energy
Office of Scientific and Technical Information

Air pollution effects on potato and bean in southern Michigan

Book ·
OSTI ID:6266798
Air pollution injury of potato and bean in southeastern Michigan is described. The speckle leaf disease of potato which caused severe yield losses in 1968 and 1969, and which was present to a lesser extent in 1970 and 1971, is believed related to air pollution injury. Plants were grown in plastic houses in southeastern Michigan potato fields. Ambient field air was introduced into one house and air was filtered through activated charcoal in another. Tobacco plants in the non-filtered air developed symptoms typical of ozone injury. Bean leaves became bronzed with brown necrotic flecks on the upper surface. Severely affected leaves dropped. Affected potato plants developed symptoms of early maturity and died prematurely exhibiting chlorosis and early yellowing of the lower leaves. Necrotic spots developed on the upper surface of leaves, upper surfaces became bronzed, leaves rolled upward, and severely affected leaves died and remained attached to the stem. In filtered air, plants grew normally and symptoms of speckle leaf and air pollution were absent. Symptoms of speckle leaf diseased potato plants in the field were in agreement with those developing in the non-filtered air. Chemical control of air pollution injury was successful with tobacco and bean. Benomyl (methyl 1-(butylcarbamoyl)-2-benzimidazolecarbamate) 50 ppM in soil was effective in preventing injury in tobacco and bean. Neither soil nor foliage applications to potato have as yet been successful.
OSTI ID:
6266798
Country of Publication:
United States
Language:
English