Yield response of head lettuce (Lactuca sativa l. ) to ozone
Technical Report
·
OSTI ID:5694818
Head lettuce (Lactuca sativa L. cv Empire) was grown in the field and exposed in open-top chambers to proportional increments of ozone (O/sub 3/) from full charcoal filtration (CF) to twice ambient O/sub 3/ concentrations(NF x 2.0). Severe foliar injury developed on young plants exposed to O/sub 3/ concentrations 1.7 and 2.0 times greater than ambient (seasonal 7 hr means of 0.104 and 0.128 ppm, respectively). These exposure levels also reduced total head weight 13 and 35%, respectively, compared with CF plants. Marketable-sized head weight was reduced 21 and 80%, respectively.
- Research Organization:
- California Univ., Riverside (USA). Statewide Air Pollution Research Center
- OSTI ID:
- 5694818
- Report Number(s):
- PB-86-176773/XAB
- Country of Publication:
- United States
- Language:
- English
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