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Response of Potassium-Deficient Tomato Plants to Atmospheric Ozone. Ida A. Leone, Associate Research Professor, Department of Plant Biology, Cook College, Rutgers-The State University of New Jersey, New Brunswick 08903; Phytopathology 66:734-736. Accepted for publication 15 December 1975. DOI: 10.1094/Phyto-66-734.

Visible injury caused by ozone was reduced in potassium-deficient Rutgers tomato plants. Injury reduction paralleled increased foliage resistance as indicated by porometer measurements. Exposure to ozone was followed by increased foliar potassium content in both normal and potassium-deficient plants.

Additional keywords: air pollution, ozone injury, potassium deficiency, stomatal resistance, Lycopersicon esculentum.