Ozone-herbicide interactions in crop plants

Journal Article · Thu Nov 01 00:00:00 EST 1973 · Weed Sci.; (United States)

OSTI ID:6587763

Carney, A W; Stephenson, G R; Ormrod, D P; Ashton, G C

Tomato (Lycopersicon esculentum Mill. Fireball), white bean (Phaseolus vulgaris L. Seaway), and tobacco (Nicotiana tabacum L. Delhi 34 and White Gold) were pretreated with herbicides at one of three rates prior to fumigation with ozone at 0, 7.5, 15, or 30 pphm (parts per hundred million) for two 1.5 hr periods. The plants were harvested 5 to 7 days after ozone fumigation, dried, and weighed. The natural logarithms of the dry weight data were subjected to multiple regression analysis to test for synergistic or antagonistic interactions between ozone and the various herbicides. Synergistic phytotoxicity was definitely observed for pebulate (S-propyl butylethylthiocarbamate) and possibly for chloramben (3-amino-2,5-dichlorobenzoic acid) in combination with ozone on tobacco White Gold and Delhi 34, respectively. For most of the other combinations (chloramben, trifluralin ..cap alpha..,..cap alpha..,..cap alpha..-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) or monolinuron (3-(p-chlorophenyl)-l-methoxy-l-methylurea) on white bean, diphenamid (N,N-dimethyl-2,2-diphenylacetamide) or trifluralin on tomato, chloramben on tobacco White Gold, and pebulate on tobacco Delhi 34) the phytotoxicity in the presence of ozone was additive and no interaction was indicated. An antagonistic interaction between ozone and benefin (N-butyl-N-ethyl-..cap alpha..,..cap alpha..,..cap alpha..-trifluoro-2,6-dinitro-p-toluidine) was indicated on the two cultivars of tobacco.

• Research Organization: Univ. of Guelph, Ontario
• OSTI ID: 6587763
• Journal Information: Weed Sci.; (United States), Vol. 21:6
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
BIOLOGICAL EFFECTS
HERBICIDES
CHEMICAL REACTIONS
OZONE
INJURIES
PLANTS
TOMATOES
FOOD
PESTICIDES
POLLUTION
VEGETABLES
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)