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    EVALUATION OF EFFICACY OF CHEMICAL AND BIOLOGICAL FUNGICIDES FOR CONTROL OF RHIZOCTONIA ROOT ROT IN BEDDING PLANTS

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    Author
    Mahato, Tilak R.
    Issue Date
    2005
    Advisor
    Knight, James
    Committee Chair
    Knight, James
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    The efficacy of chemical fungicides - Abound, Banrot, and ZeroTol, and biocontrol agents - PlantShield and SoilGard, were evaluated to control Rhizoctonia root rot of bedding plants in a retractable roof greenhouse. The pathogen lacked virulence and resulted in up to 7% mortality in control treatments. Comparatively, petunia white had a greater mortality than other cultivars. Survival of Abound treated plants was 100% for all four experiments. Often, dry weight and quality of plants of all treatments were not significantly different from inoculated and untreated control plants. ZeroTol applied at the highest recommended rate (20 ml L-1 of water) caused phytotoxicity to cool season plants reducing dry weight up to 64% in petunia red. The effectiveness of conventional fungicides and biocontrol agents to control Rhizoctonia root rot in bedding plant production and simulated landscape conditions cannot be evaluated from the results of this study because of low disease severity.
    Type
    text
    Electronic Thesis
    Degree Name
    MS
    Degree Level
    masters
    Degree Program
    Agricultural Education
    Graduate College
    Degree Grantor
    University of Arizona
    Collections
    Master's Theses

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