Postharvest Control of Botrytis Rot of Roses with Carbon Dioxide. D. J. Phillips, Plant Pathologist, Agricultural Research Service, USDA, Horticultural Crops Research Laboratory, 2021 S. Peach Ave., Fresno, CA 93727. D. A. Margosan, Biological Laboratory Technician, and D. C. Fouse, Biological Laboratory Technician, Agricultural Research Service, USDA, Horticultural Crops Research Laboratory, 2021 S. Peach Ave., Fresno, CA 93727. Plant Dis. 69:789-790. Accepted for publication 7 February 1985. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1985. DOI: 10.1094/PD-69-789.

Botrytis flower rot was reduced, flower quality improved, and vase life lengthened by holding cut flowers of the rose cultivars Samantha, Royal Red, Pauls Pink, and Bettina in 10, 20, or 30% CO₂ at 10–12 C for 6 days. The results suggest a greater control of Botrytis rot than would result from a simple inhibition of the pathogen by CO₂.

Keyword(s): Botrytis cinerea.