Study demonstrates ozone uptake by SJV crops

• Main Authors: David Grantz, J. Ian MacPherson, William J. Massman, James Pederson
• Format: Article
• Language: English
• Published: University of California Agriculture and Natural Resources 1994-07-01
• Series: California Agriculture
• Online Access: http://calag.ucanr.edu/archive/?article=ca.v048n04p9

The California Ozone Deposition Experiment, using Instruments mounted In an airplane and on the ground, shows that agricultural land in the San Joaquin Vailey removes large amounts of ozone from valley air. The most active pathway Is uptake through sto-mata In plant leaves, the process leading to crop yield losses. Other pathways, Including ozone destruction on leaf, stem and soil surfaces, are slower but very important on a valley-wide basis. Ozone deposition to crops may have a slgnlflcant Impact on air qualify, and should be considered when farmland Is converted to urban uses that contribute more to ozone production and less to ozone removal.