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Subject: Horticulture × Author: Anuja Gopal × End date: 2009 × Start date: 2004 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Growth, development and quality of vanilla (Vanilla planifolia Andrews) as influenced by organics and growth regulators
    (Department of Plantation Crops and Spices, College of Horticulture, Vellanikkara, 2005) Anuja Gopal; KAU; Nybe, E V
    Investigations on “Growth, development and quality of vanilla (Vanilla planifolia Andrews) as influenced by organics and growth regulators” were conducted under three experiments at College of Horticulture, Vellanikkara during 2002-2004. The salient findings are abstracted below: Vegetative characters such as like the number of leaves, leaf length, breadth of leaf, leaf area, number of nodes, internodal length, girth of vine, duration of leaf emergence to maturity and number of aerial roots failed to exhibit any significant differences among treatments except for the length of vine. With respect to rate of growth of vine the treatment POP + biogas slurry showed maximum growth rate during December and POP+ biogas slurry + groundnut cake slurry showed maximum growth rate during February. With respect to foliar nutrient content, only potassium showed significant difference among the treatments. The vines which received POP + 17: 17: 17 complex spray recorded the highest value for potassium (3.80 per cent). The results of the experiment to induce parthenocarpy revealed that the treatments significantly influenced the parthenocarpic development of beans. Both growth regulators 2,4-D and GA recorded cent per cent fruit set. The length and volume of beans were more in PT2 (2,4-D- 0.20 mg/ flower bud, swabbing). Maximum girth and weight of beans were observed in hand pollinated beans. The experiment to improve the vanillin content of beans revealed that the growth regulators significantly influenced the quality of beans. The moisture content was recorded maximum in beans sprayed with IBA 100 ppm. It was observed that the vanillin content varied significantly among the treatments through out the curing period. After sun drying, the hand pollinated beans showed a high vanillin content of 3.98 per cent. After slow drying period VT4 (IBA – 200 ppm) recorded the highest vanillin content of 4.22 per cent and after conditioning VT6 (Kinetin – 200 ppm) recorded high vanillin content (4.20 per cent). Phenol content after curing was more in beans which received 200 ppm Kinetin spray and the highest sugar content was recorded by VT1 (NAA – 100 ppm).