Effects of Silicon -Based Fertilizer Applications on the Development and Reproduction of Insect Pests Associated With Greenhouse -Grown Crops
Hogendorp, Brian K.
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https://hdl.handle.net/2142/83131
Description
Title
Effects of Silicon -Based Fertilizer Applications on the Development and Reproduction of Insect Pests Associated With Greenhouse -Grown Crops
Author(s)
Hogendorp, Brian K.
Issue Date
2008
Doctoral Committee Chair(s)
Raymond A. Cloyd
Swiader, John M.
Department of Study
Natural Resrouces and Environmental Sciences
Discipline
Natural Resrouces and Environmental Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Agriculture, Horticulture
Language
eng
Abstract
Applications of silicon-based fertilizers to coleus, poinsettia, and fiddleleaf fig did not increase plant growth and development parameters such as moisture content (g), plant height (cm), and the number of mature leaves. The results of these studies clearly demonstrate that applications of silicon-based fertilizers to certain plant species including coleus, poinsettia, and fiddleleaf fig plants do not inhibit feeding of certain phloem-feeding insect pests such as citrus mealybug and greenhouse whitefly. Although, silicon may function as a protective or mechanical barrier associated with increased epidermal leaf thickness/toughness and strengthening cell walls in certain plant species, these effects are not universal. The proposed hypothesis that the presence of silicon in plant tissues inhibits insect feeding, and thus, development and reproduction, particularly phloem-feeders with piercing-sucking mouthparts such as citrus mealybug and greenhouse whitefly was not supported by the current study. The use of supplemental silicon-based fertilizers applied to greenhouse-grown crops do not provide host-plant resistance to certain insect pests.
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