Abstract
Water relation interruption is the major cause of vase life reduction in cut flowers. This is largely due to microorganism proliferation in the vase solution which leads to vascular occlusion and solution uptake reduction. In order to study the biocidal effect of nano silver particles and some conventional biocides, 'Cherry Brandy' roses were treated with the following: colloid of nano silver particles, citric acid, calcium hypochlorite (Ca(ClO)2), tap water, or sterilized distilled water (control). Nano silver and Ca(ClO) 2 were the most effective treatment in controlling microbial proliferation. Three fungi and four different bacterial colonies were isolated from different vase solutions. The isolated fungi were different strains of Fusarium solani while the bacterial isolates were Bacillus sp., Coccus spp. and Streptomyces sp. Results suggest nano silver application is an effective biocidal preservative solution for rose cut flowers as its effect was comparable to that of conventional biocides.
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