Project at a Glance

Title: The impact of SO2 on potatoes chronically stressed with ozone

Principal Investigator / Author(s): Foster, K. W.

Contractor: Department of Botany and Plant Sciences, UC Riverside

Contract Number: A7-141-30

Research Program Area: Ecosystem & Multimedia Effects

Topic Areas: Agriculture, Ecosystem Impacts


Potato crops in the San Joaquin Valley of California may be damaged by air pollution, specifically ozone and/or sulfur dioxide. Experiments at the University of California, Riverside, were conducted to examine the effects of four levels of ambient oxidant treatment in factorial combination with two level of sulfur dioxide treatment on yield and quality of 'Centennial', a russet-skinned cultivar. Root and shoot dry weights and tuber yield were linearly reduced by oxidant treatments. Sulfur dioxide effects were less marked but of possible importance. No treatment effects on dry matter or sugar contents of tubers were observed.

For questions regarding this research project, including available data and progress status, contact: Research Division staff at (916) 445-0753

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