Effect of Planted Bulb Weight, Nitrogen Application Time and Deheading on Bulb Production in Daffodil cv. Tunis

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Effect of Planted Bulb Weight, Nitrogen Application Time and Deheading on Bulb Production in Daffodil cv. Tunis

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Title: Effect of Planted Bulb Weight, Nitrogen Application Time and Deheading on Bulb Production in Daffodil cv. Tunis
Author: Khan, Mohd Imran (Scholar); Khan, F. U. (Guide)
Abstract: A study entitled “Effect of Planted Bulb Weight, Nitrogen Application Time and Deheading on Bulb Production in Daffodil cv. Tunis” was conducted during winter seasons of 2009-2010 and 2010-2011 at Research Farm, Division of Floriculture, Medicinal and Aromatic Plants, SKUAST-Kashmir, Shalimar. The treatment consisting of 3-factors viz. 3 planted bulb weight (10.00, 12.50 and 15.00 t/ha), 3 nitrogen application time (two-splits in 2nd week of November and 1st week of March, (two splits in 1st week of March and 1st week of April) and single split (1st week of March) and 2 deheadings (no deheading and deheading at tight bud stage) was laid out in randomized block design and replicated thrice. The study revealed that planted bulb weight at 10.00 t ha-1 recorded significantly minimum days to sprouting. However leaf number, leaf dry weight and leaf area were higher at 15.00 t ha-1 at different growth periods during 2010-2011. Periodic leaf number, leaf dry weight and leaf area plant-1 was significantly highest with nitrogen application in 2 splits one each in 1st week of March and 1st week of April, while days to bulb sprouting were significantly minimum with 2 nitrogen splits each in 2nd week of November and 1st week of March. Dehading at tight bud stage significantly reduced the number of days to bulb sprouting but deheading treatment did not affect periodic leaf number, leaf dry weight and leaf area plant-1. Planted bulb weight at 15.00 t ha-1 recorded significantly higher leaf RGR at 30-60 and 60-90 DAM (Days after March 1st) during 2009-2010 and 2010-2011, respectively. Nitrogen application in 2 splits in 1st week of March and 1st week of April recorded significantly higher leaf RGR at 30-60 and 60-90 DAM during 2009-2010 and 2010-2011 respectively. Deheading at tight bud stage recorded significantly maximum leaf RGR at 60-90 DAM during 2010-2011, respectively. Single nitrogen split in 1st week of March recorded significantly highest leaf N content at 30 DAM and took minimum days to flowering while leaf N content 60 and 90 DAM was higher with 2 nitrogen splits each in 1st week of March and 1st week of April. Planted bulb weight at 15.00 t ha-1 recorded significantly highest leaf N content and maximum days to flowering. Deheading treatment did not affect days to flowering but deheading at tight bud stage registered significantly higher leaf N content. Periodic bulb dry weight, bulb RGR and bulb weight plant-1 was significantly highest with bulb weight at 10.00 t ha-1. Nitrogen application in 2 splits each in 1st week of March and 1st week of April recorded significantly higher bulb dry weight, bulb RGR and bulb weight plant-1. Deheading at tight bud stage registered significantly maximum bulb dry weight, bulb RGR and bulb weight plant-1 at different growth periods. Bulb N content was not affected by planted bulb weight, where as 2 splits of nitrogen in 1st week of March and 1st week of April and deheading at tight bud stage recorded significantly maximum bulb N content. Total bulb weight (22.36 t ha-1) and total bulbs of different grades (9, 86,400) were significantly higher at planted bulb weight at 15.00 t ha-1. Nitrogen in 2 splits at 1st week of March and 1st week of April registered significantly highest. Total bulb yield weight (19.90 t ha-1) and total bulbs of different grades (8,13,00) and deheading at tight bud stage recorded maximum total bulb weight (18.58 t ha-1)) and total bulbs of different grades (7,74,700). Propagation coefficient was significantly highest in planted bulb weight at 15.00 t ha-1. Nitrogen in 2 splits in 1st week of March and 1st week of April recorded maximum propagation coefficient whereas deheading treatment did not affect it. Proportion of single and double nosed bulbs were also higher at 15.00 t ha-1 and nitrogen application in 2 splits each at 1st week of March and 1st week of April respectively. Available nitrogen, phosphorus and potassium content in soil after crop harvest remained higher for different treatment combinations than their initial status in soil before start of experimentation. Planted bulb weight at 15.00 t ha-1 supplied with N in 2 splits one each at 1st week of March and 1st week of April and deheaded at tight bud stage (W3 N2 D1) realized higher net returns of (` 6,30,508 ha-1) with benefit cost ratio of (0.51)
URI: http://dspaces.uok.edu.in/jspui//handle/1/1066
Date: 2012


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