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STANDARDIZATION OF NPK LEVELS UNDER NET HOUSE CONDITIONS AND POST HARVEST MANAGEMENT OF CUT FLOWERS IN GERBERA (Gerbera jamesonii Bolus) CV. SANGRIA

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Title STANDARDIZATION OF NPK LEVELS UNDER NET HOUSE CONDITIONS AND POST HARVEST MANAGEMENT OF CUT FLOWERS IN GERBERA (Gerbera jamesonii Bolus) CV. SANGRIA
 
Creator NANDRE BHARAT MAHAVIR
 
Contributor Barad A.V.
 
Subject GERBERA
HORTICULTURE
 
Description An experiment entitled, “Standardization of NPK levels under net house conditions and post harvest management of cut flowers in gerbera (Gerbera jamesonii Bolus) cv. Sangria” was conducted at Net house unit of Horticultural Instructional Farm, Department of Horticulture, College of Agriculture, Junagadh Agricultural University, Junagadh during the year 2004-2005 and 2005-2006. In the field experiment there were total eighteen treatments, viz., three levels of nitrogen (0, 10 and 20 g/m2); three levels of phosphorus (0, 5 and 10 g/m2) and two levels of potash (0 and 20 g/m2) including a control and each treatment was replicated twice in Factorial Completely Randomized Design. In the first laboratory experiment, effect of pulsing treatments on vase life of cut flower gerbera was studied in seven treatments (including control) of sucrose 10 %, Silver nitrate (AgNO3) 200 ppm and 8-HQS 200 ppm and their combinations with four replications. In second laboratory experiment, total eleven treatments (including control) of sucrose 4 %, Aluminium sulphate (Al2(SO4)3 100 ppm, 8-HQS 400
ppm and Cobalt sulphate (CoSO4) 500 ppm individually and with their combinations used in vase solution and replicated thrice to enhance the post harvest life of gerbera cut flowers. The plant height (31.01cm), plant spread (52.18cm2), number of suckers (2.14), plant fresh and dry weight (144.34 and 47.60g, respectively) were maximum with the N2 (20g/m2) level of nitrogen. The P2 level phosphorus (10g/m2) produced maximum plant height (29.21cm), plant spread (50.34 cm2), number of suckers (1.91), fresh (134.32g) and dry weight (45.32g). But, potash levels failed to influence the various vegetative growth parameters. Again, N2 level of nitrogen gave earliest flower bud emergence (70.03 days) and flowering (84.99 days). The highest number of flowers (8.69/plant, 48.25/m2 and 4.83 lakh/ha), maximum weight of single flower (13.98g) and maximum total number of flowers in a year (21.63/plant, 120.16/m2 and 12.02 lakh/ha) was registered in winter season due to N2 at 20g/m2. Similarly, phosphorus 10g/m2 produced earliest flower bud (69.26 days) and flowering (84.59 days). In winter season, the number of flowers (7.9/plant, 44.41/m2 and 4.44 lakh/ha), weight of single flower (13.39g) and total number of flowers in a year (19.52/plant, 108.46/m2 and 10.85 lakh/ha) were found maximum due to P2 (10g/m2). Among the potash treatments, the K2 (20g/m2) being higher produced earliest flower bud (70.21days) as well as flowering (86.07 days). In the winter season, the maximum number of flowers (7.85/plant, 43.59/m2 and 4.36 lakh/ha), weight of single flower (13.09g) and total number of flowers in a year (19.10/plant, 106.11/m2 and 10.61 lakh/ha) was obtained with K2 (20 g/m2).
Maximum flower diameter (10.4 cm), thickest (0.86 cm) and longest flower stalk (50.03 cm) and highest number of ray florets (240.50) was obtained with N2 (20 g N/m2). The higher order interaction N2P2K1 (T18) resulted in maximum plant height (32.90cm), number of suckers (2.70) and highest fresh weight of plant (168.57g), earliest flower bud appearance (65.10 days) and flowering (79.35 days), also, the maximum number of flowers in winter season (9.31/plant, 51.69/m2 and 5.17 lakh/ha) and maximum weight of single flower (17.90g) and total flower yield in a year (24.51/plant, 136.38/m2 and 13.64 lakh/ha) as well as maximum flower diameter (12.4 cm), thickest (1.03 cm) and largest flower stalk (57.33 cm). The nutrient availability in the soil media was unaffected by the individual NPK levels and all their possible interaction. In case of economics, N2P2K1 at 20:10:20 g/m2 gave highest net returns (Rs. 735924/ha) and CBR (1:1.22). In laboratory experiment for pulsing, significantly minimum physiological weight loss (43.81%), maximum freshness (8.8 marks) and colour retention (8.4 marks), minimum wilted florets (4.35%) and longest vase life (13.99 days) as well as maximum uptake of water (135 ml), least water loss (123.04 ml) and minimum uptake loss ratio (0.91) was recorded with pulsing treatment (sucrose 10% + AgNO3 200 ppm + 8-HQS 200 ppm at room temperature for 24 hours). Significant improvement in the vase life and quality of cut flowers was also observed due to preservative chemical treatments. Minimum physiological loss in weight (33.60%), longest vase life (16.76 days), maximum holding solution uptake (99 ml), minimum solution loss (157 ml) and least solution uptake loss ratio (1.59) was registered with T5 (sucrose 4% + 8-HQS 400 ppm) treatment.
 
Date 2016-09-08T15:39:39Z
2016-09-08T15:39:39Z
2006-08
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/76136
 
Language en
 
Format application/pdf