Ozone injury to tobacco in the field influenced by soil treatments with benomyl and carboxin
In field plots under shade tents, soil treatments of carboxin at 5 and 10 ..mu..g/g and benomyl at 25 ..mu..g/g were tested for their ability to protect tobacco cultivar Conn. 7272 against flecking caused by ozone. Plants growing in soil treated with carboxin had significantly less fleck on their first three leaves than did nontreated plants; but on most of the subsequent leaves the carboxin-treated plants had more fleck than the untreated plants. The plants growing in soil containing carboxin at 10 ..mu..g/g were stunted and their leaves developed yellow margins. In the benomyl treated plots, the plants had significantly less flecking on their first eight leaves, but the upper leaves were not protected later in the season. These plants were more vigorous than those in either the carboxin-treated or untreated plots, appeared to have many more fine, white, feeder roots and their roots contained fewer tobacco cyst nematodes.
- Research Organization:
- Connecticut Agricultural Experiment Station, New Haven
- OSTI ID:
- 5483216
- Journal Information:
- Phytopathology; (United States), Vol. 64
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
OZONE
BIOLOGICAL EFFECTS
AIR POLLUTION
CONNECTICUT
EXPERIMENTAL DATA
FUNGICIDES
LEAVES
PLANT GROWTH
RESPONSE MODIFYING FACTORS
ROOTS
SENSITIVITY
STOMATA
TOBACCO
DATA
FEDERAL REGION I
GROWTH
INFORMATION
NORTH AMERICA
NUMERICAL DATA
OPENINGS
PESTICIDES
POLLUTION
USA
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)