Project at a Glance
Project Status: complete
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.
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