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Abstract
Abstract Transitory yellowing, a new disease of Chinese cabbage (Brassica campestris L. ssp pekinensis Rupr.), was noticed in 1971 in the Lalamilo area on the Island of Hawaii. The disease was not associated with pathogenic microorganisms. The susceptibility varies with cultivar but no cultivar proved to be resistant. In the disease-free Volcano area no symptoms developed on plants growing in soil collected from the diseased area at Lalamilo. Application of a complete fertilizer or pH adjustment of soil did not alleviate the disease symptoms. Disease symptoms disappeared within 3 days when plants were transported from a diseased area to a healthy area. Results suggest that the new disease is caused by an unknown airborne agent present in the diseased area.
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