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Cold Therapy of Bean Rust. C. E. Yarwood, Professor of Plant Pathology, University of California, Berkeley 94720; Phytopathology 64:1044-1046. DOI: 10.1094/Phyto-64-1044.

When bean leaves infected with rust (Uromyces phaseoli on Phaseolus vulgaris ‘Pinto’) for 3-6 days were dipped in ice water after heating at 45 C, the dosage of heat necessary for therapy was only about one-fourth of that necessary if the leaves were not dipped in ice water after heating. Cold alone was ineffective as a therapeutic agent.