Effects of ethylene diurea and ozone on the growth of tree seedlings
Journal Article
·
· Plant Dis.; (United States)
OSTI ID:5830505
The efficacy of ethylene diurea (EDU) was tested as a protectant against O/sub 3/-induced leaf injury and growth reduction in Fraxinus americana and Prunus serotina. Seedlings were subjected to weekly 4-hr fumigations at 0, .10, .20, .30, or .40 ppm O/sub 3/ for 9 successive weeks. Three days before each fumigation, foliage of plants in each O/sub 3/ treatment was misted with distilled water or a solution of 1000 ppm EDU containing 0.10% Triton-X surfactant. Leaf injury in both species increased when O/sub 3/ concentration exceeded 0.10 ppm. Ozone had no significant effect on dry matter production of roots, shoots, or leaves, or on the number of leaves produced. Total height of P serotina was reduced by .40 ppm O/sub 3/, but height of F. americana was unaffected by O/sub 3/. A non-significant trend of maximum number of leaves, height, and dry weight of the different components at .10 ppm O/sub 3/ suggests that low O/sub 3/ dosage may have slightly stimulated growth. EDU offered essentially complete protection from foliar O/sub 3/ injury up to .20 ppm O/sub 3/, and provided significant but decreasingly effective protection up to .40 ppm O/sub 3/. EDU did not moderate the height reduction of P. serotina receiving .40 ppm O/sub 3/. 16 references, 2 tables.
- Research Organization:
- Ohio Agricultural Research and Development Center, Wooster
- OSTI ID:
- 5830505
- Journal Information:
- Plant Dis.; (United States), Journal Name: Plant Dis.; (United States) Vol. 63:4; ISSN PLDID
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANTIOXIDANTS
BIOLOGICAL EFFECTS
DOSE-RESPONSE RELATIONSHIPS
GROWTH
INHIBITION
INJURIES
LEAVES
OZONE
PLANT GROWTH
PLANTS
RESPONSE MODIFYING FACTORS
SEEDLINGS
TREES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANTIOXIDANTS
BIOLOGICAL EFFECTS
DOSE-RESPONSE RELATIONSHIPS
GROWTH
INHIBITION
INJURIES
LEAVES
OZONE
PLANT GROWTH
PLANTS
RESPONSE MODIFYING FACTORS
SEEDLINGS
TREES