The main objective of the present work was investigated to changes in the quality of cut flower of Phalaenopsis by floral preservative, pretreatment and post-treatment. Plant material flowers were obtained from NIHHS, number of flower of Phalaenopsis 'V 10' had been with 6 flower per one Inflorescence. Treatments were used to Hwajoung(floral preservative), AVB(pretreatment) and Professional Clear(post-treatment). As a result of examining the effects, vase life of distilled water(control) and

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... joung 50 times were vary short in 5 days, Hwajoung 100 and 200 times in 9 days was approximately 1.8 times longer than distilled water and Hwajoung 50 times. It was not effective to extend the vase life cut flower by AVB treatment. Effects of extend vase life of cut flower by professional clear treatment was prolonged 10 days longer for cut Phalaenopsis flowers than AVB.