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EFFECT OF GROWTH RETARDANTS AND MEDIA ON GROWTH AND QUALITY OF ORNAMENTAL FOLIAGE PLANT AGLAONEMA CV. ERNESTO’S FAVOURITE

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Title EFFECT OF GROWTH RETARDANTS AND MEDIA ON GROWTH AND QUALITY OF ORNAMENTAL FOLIAGE PLANT AGLAONEMA CV. ERNESTO’S FAVOURITE
 
Creator S. SWETHA
 
Contributor Dr. T. PADMALATHA
 
Subject ornamental foliage ,vermicompost ,cocopeat,root grade
 
Description The present investigation entitled “Effect of plant growth retardants and potting media on growth and quality of ornamental foliage plant aglaonema cv. Ernesto’s Favourite” was carried out at Floriculture Research Station, Rajendranagar, Hyderabad during rabi season of 2012-13. Two experiments were carried out in Completely Randamized Design.

In the first experiment, thirteen treatments were imposed as soil drench at 30 and 60 DAT with 3 replications. The treatments were T₁ (PBZ at 0.0625 mg/pot), T₂ (PBZ at 0.125 mg/pot), T₃ (PBZ at 0.1825 mg/pot), T₄ (PBZ at 0.25 mg/pot), T₅ (A-rest 0.25 mg/pot), T₆ (A-rest 0.50 mg/pot), T₇ (A-rest 0.75 mg/pot), T₈ (A-rest 1.00 mg/pot), T₉ (CCC at 500 ppm), T₁₀ (CCC at 1000 ppm), T₁₁ (CCC at 1500 ppm) and T₁₂ (CCC at 2000 ppm) and T₁3 (Control).
Data was recorded on plant height, number of leaves, canopy length and width, leaf area and diameter of stem at 30, 60, 90, 120 and 150 days after transplanting. Data regarding chlorophyll a & b, visual plant grade, colour grade and root grade were recorded at 150 DAT In the second experiment, nine treatments of different potting media were used with 3 replications. The treatments were T₁ (soil + sand + FYM in 2:1:1), T₂ (soil + sand + vermicompost in 2:1:1), T₃ (soil + sand + FYM + vermicompost in 2:1:1:0.5), T₄ (cocopeat + sand + FYM in 2:1:1), T₅ (cocopeat + sand + vermicompost in 2:1:1), T₆ (cocopeat + sand + FYM + vermicompost in 2:1:1:0.5), T₇ (sphagnum peat + sand + FYM in 2:1:1 ), T₈ (sphagnum peat + sand + vermicompost in 2:1:1) and T₉ (sphagnum peat + sand + FYM + vermicompost in 2:1:1:0.5).
Data was recorded on plant height, number of leaves, leaf length and width and leaf area at 30, 60, 90, 120 and 150 days after transplanting. Data regarding plant growth index, fresh and dry weight of root, visual plant grade and colour grade, root grade and N, P and K content in leaves were recorded at 150 DAT. The results were statistically analyzed in CRD. Salient features of the findings are summarized here under.
In the first experiment, at 150 DAT maximum reduction in plant height (47.53 cm), canopy length (41.25 cm), canopy width (44.63 cm) and chlorophyll-a (18.50 mg/g fresh wt) were recorded with soil drench application of paclobutrazol at 0.1825 mg/pot (T3) and paclobutrazol at 0.25 mg/pot (T4) was found to be on par. Lowest leaf area (140.66 cm2) and stem diameter (2.90 cm) were observed in paclobutrazol at 0.25 mg/pot treatment (T4) and was on par with paclobutrazol at 0.1825 mg/pot. Highest visual plant grade (4.57) and colour grade (4.60) were recorded with paclobutrazol at 0.1825 mg/pot (T3) to which paclobutrazol at 0.125 mg/pot (T2), paclobutrazol at 0.25 mg/pot (T4) and paclobutrazol at 0.0625 mg/pot (T1) were found on par. Highest Chlorophyll - b (6.78 mg/g fresh wt) was recorded with paclobutrazol at 0.1825 mg/pot (T3) which was found on par with paclobutrazol at 0.125 mg/pot (T2) and paclobutrazol at 0.25 mg/pot (T4). There was no significant difference between the treatments for the parameter of number of leaves.
In the second experiment, maximum plant height (71.36 cm), number of leaves (16.00), leaf length (60.39 cm), leaf area (208.36 cm2), plant growth index (63.37 cm), fresh weight of root (45.00 g) and N (3.46 %) and P (0.95 %) content were recorded with cocopeat + sand + vermicompost in 2:1:1 combination (T₅) at 150 DAT. Maximum leaf width (10.13 cm), dry weight of root (8.53 g), visual plant grade (4.50), colour grade (4.58), root grade (4.45) and K content (1.91 %) were recorded with cocopeat + sand + vermicompost in 2:1:1 combination (T₅) and cocopeat + sand + FYM + vermicompost in 2:1:1:0.5 proportion (T₆) was found on par.
Highest growth reduction and improved quality of aglaonema cv.Ernesto’s Favourite due to paclobutrazol might be attributed to retarding gibberellin synthesis and increasing chlorophyll content respectively. Superior performance of cocopeat + sand + vermicompost (2:1:1) media might be due to high water holding capacity, better aeration, high cation exchange capacity, acceptable pH and low EC.
 
Date 2016-07-25T09:52:28Z
2016-07-25T09:52:28Z
2013-07
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/69640
 
Language en
 
Format application/pdf
 
Publisher Dr. Y.S.R. HORTICULTURAL UNIVERSITY