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Validation of the effects of a single one second hypochlorite floral dip on Botrytis cinerea incidence following long-term shipment of cut roses

Woltering, E.J. and Boerrigter, H.A.M. and Mensink, M.G.J. and Harkema, H. and Macnish, A.J. and Reid, M.S. and Jiang, C.-Z. (2015) Validation of the effects of a single one second hypochlorite floral dip on Botrytis cinerea incidence following long-term shipment of cut roses. Acta Horticulturae (1064). pp. 211-219. ISSN 0567-7572

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Article Link(s): http://dx.doi.org/10.17660/ActaHortic.2015.1064.24

Abstract

The effect of a pre-shipment hypochlorite treatment on botrytis incidence was evaluated in a large number of rose cultivars and under different long-term storage conditions. Application parameters, stability and sources of hypochlorite were investigated. Irrespective of the type of packaging and shipment conditions, roses that received a pre-shipment treatment with 100 to 150 mg/L hypochlorite showed a significantly decreased botrytis incidence compared to non-hypochlorite treated roses. The hypochlorite treatment generally was more effective than a comparable treatment with commercial fungicides. Dipping the flower heads for approximately one second in a hypochlorite solution was more effective than spraying the heads. In few cases minor hypochlorite-induced damage on the petal tips was observed at higher concentrations (>200 mg/L). Apart from the effect on botrytis incidence, the treatment resulted in reduced water loss that may have an additional beneficial effect on the eventual flower quality. It is concluded that, apart from other obvious measures to reduce botrytis incidence (prevention of high humidity at the flower heads) a pre-shipment floral dip in 100 to 150 mg/L hypochlorite from commercial household bleach is an easy and cost effective way to reduce botrytis incidence following long term storage/transportation of roses. © 2015, International Society for Horticultural Science. All rights reserved.

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:Chlorine Cut flowers Flower quality Long-term transport Reefer Rose Botryotinia fuckeliana Botrytis Rosa
Subjects:Plant culture > Flowers and flower culture. Ornamental plants > Care and preparation of cut flowers and ornamental plants for market
Deposited On:09 Jun 2016 01:55
Last Modified:09 Jun 2016 01:55

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