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EFFECT OF SEASONAL VARIATION, PULSING AND DIFFERENT FLORAL PRESERVATIVES ON VASE LIFE OF GOLDEN ROD (Solidago canadensis Linn.) CUT FLOWERS

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(EFFECT OF SEASONAL VARIATION, PULSING AND DIFFERENT FLORAL PRESERVATIVES ON VASE LIFE OF GOLDEN ROD (Solidago canadensis Linn.) CUT FLOWERS)

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2006-01
Dr. D. V. Delvadia
JAU, JUNAGADH
150
EFFECT OF SEASONAL VARIATION, PULSING AND DIFFERENT FLORAL PRESERVATIVES ON VASE LIFE OF GOLDEN ROD (Solidago canadensis Linn.) CUT FLOWERS
M.Sc

The present experiment entitled “Effect of seasonal variation, pulsing and different floral preservatives on vase life of golden rod (Solidago canadensis Linn.) cut flowers” was conducted with a view to enhanced post harvest life of golden rod flowers in the Post Graduate Research Laboratory, Department of Horticulture, College of Agriculture, Junagadh Agricultural University, Junagadh Campus, Junagadh during March-2004 to January-2005. The effect of seasonal variation (Summer, Monsoon, Winter), and three pulsing levels (control, sucrose (15%), aluminium sulphate (600 mg/l)) and eight levels of floral preservatives viz; sucrose (2%), cobalt sulphate (200 mg/l), citric acid (200 mg/l), sucrose (2%) + cobalt sulphate (200 mg/l), sucrose (2%) + citric acid (200 mg/l), cobalt sulphate (200 mg/l) + citric acid (200 mg/l), sucrose (2%) + cobalt sulphate (200 mg/l) + citric acid (200 mg/l) and control were studied under factorial completely randomized design with pooled analysis. The treatments were replicated three times and observations recorded till the complete senescence of the spike. Seasonal variation significantly influenced vase life of golden rod cut flowers. Summer season was found superior in respect of maximum total water uptake and total water loss (168.95 g and 178.19 g, respectively). Winter season was found best in respect of lowest water loss uptake ratio (1.062) and percentage of opened florets on 4th day and 8th day (57.42 % and 87.21 %, respectively) as well as highest spike weight 12th day (96.42 %) and longer vase life (9.99 days). Pulsing treatment significantly influenced vase life of golden rod cut flowers in all the characters. Sucrose (15 %) pulsing proved most effective with respect to maximum total water uptake (201.27 g) and total water loss (205.75 g), lowest water loss uptake ratio (1.023), highest spike weight on 12th day (93.91 %), minimum percentage of opened florets on 4th day and 8th day (54.64 % and 89.06 %, respectively) and longer vase life (9.54 days). Floral preservatives significantly influenced vase life of golden rod cut flower whereas, sucrose (2%) + cobalt sulphate (200 mg/l) was superior in various parameters viz; maximum total water uptake (193.13 g), total water loss (199.55 g), Spike weight on 12th day (105.41 %) and longer vase life (11.74 days) as well as minimum water loss uptake ratio (1.036) and percentage of opened florets on 4th day and 8th day (35.01 % and 74.97 %, respectively). The interaction effect of seasons and floral preservatives were significantly influenced the vase life of golden rod cut flowers. The treatment combination of summer with sucrose (2%) + cobalt sulphate (200 mg/l) recorded maximum total water uptake and total water loss (206.06 g and 210.95 g, respectively). The maximum spike weight on 12th day (121.12 %) and longer vase life (13.44 days) as well as minimum percentage of opened florets on 4th day and 8th day (28.54 % and 66.64 %, respectively) were recorded in winter season with sucrose (2%) + cobalt sulphate (200 mg/l). Interaction effect of pulsing and floral preservatives was found significant. Sucrose (15%) pulsing and preservatives cobalt sulphate (200 mg/l) + citric acid (200 mg/l) proved most effective with respect to maximum total water uptake (226.54 g), total water loss (234.93 g), spike weight on 12th day (107.58 %) and longer vase life (13.00 days) likewise, minimum percentage of opened florets on 4th day and 8th day (29.39 % and 67.82 %, respectively). It is concluded that the winter season, sucrose (15%) pulsing and floral preservative sucrose (2%) + cobalt sulphate (200 mg/l) was most desirable for enhancing vase life of golden rod cut flowers.

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