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Nitrogen levels and leaching effects on geranium (Pelargonium hortorum) stock plant growth under a Leca-based hydroculture system

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Title: Nitrogen levels and leaching effects on geranium (Pelargonium hortorum) stock plant growth under a Leca-based hydroculture system
Author(s): Libran, Maria Del Carmen
Doctoral Committee Chair(s): Williams, David
Department / Program: Natural Resources and Environmental Sciences
Discipline: Natural Resources and Environmental Sciences
Degree Granting Institution: University of Illinois at Urbana-Champaign
Degree: Ph.D.
Genre: Dissertation
Subject(s): Agriculture, Agronomy Agriculture, Plant Culture
Abstract: Three independent but interrelated experiments were conducted to investigate the effects of growing media, irrigation systems and NO3-N concentrations on geranium (Pelargonium hortorum) stock plant production cv "Yours Truly". Different growth and quality (cuttings) parameters were taken at different sampling dates. No3-N leaching content was measured everyday analyzed or at each irrigation time (exp 3).Leca clay pebbles resulted an excellent growing media to be used in a hydroculture system. Its physical and chemical properties allowed the plant to grow with a high quality market value.Geraniums plant growth parameters resulted valuable when plant were grown at 100 ppm in a Leca-based hydroculture system. Since no significance difference were found between plants grown at 100, 200, 350, ppm of NO3-N, then the 100 ppm level can be recommended. The plants grown at 10 ppm resulted smaller, with poor quality, and also with lower level carbohydrate and total $-$N in their tissues.Plants grown in soilless under a subirrigation system resulted with a quality in terms of growth parameters than plant grown in soilless under drip, Leca under drip and Leca in subirrigation.No significant differences in carbohydrates and total $-$N in tissues were found in plants grown at higher levels of nitrate-N (100, 200, 350 ppm).Plants grown at 100 ppm produced more cutting compared with the latter treatments. Cuttings obtained from plants grown at 100 and 200 ppm resulted with better rooting performance (100%).Plants grown in soilless under a subirrigation system resulted with higher quality in terms of growth parameters, than plants grown in soilless under drip, Leca with drip and Leca with subirrigation.
Issue Date: 1996
Type: Text
Language: English
URI: http://hdl.handle.net/2142/22339
ISBN: 9780591199192
Rights Information: Copyright 1996 Libran, Maria Del Carmen
Date Available in IDEALS: 2011-05-07
Identifier in Online Catalog: AAI9712354
OCLC Identifier: (UMI)AAI9712354
 

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