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Adaptive approaches to sub-irrigatio...

Kennedy, Celia Cassis.

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Adaptive approaches to sub-irrigation of potted Gerbera jamesonii and Chrysanthemum morifolium in greenhouse production.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Adaptive approaches to sub-irrigation of potted Gerbera jamesonii and Chrysanthemum morifolium in greenhouse production./
作者:	Kennedy, Celia Cassis.
面頁冊數:	164 p.
附註:	Source: Masters Abstracts International, Volume: 49-02, page: 0952.
Contained By:	Masters Abstracts International49-02.
標題:	Biology, Botany. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR67491
ISBN:	9780494674918

Adaptive approaches to sub-irrigation of potted Gerbera jamesonii and Chrysanthemum morifolium in greenhouse production.
Kennedy, Celia Cassis.

Adaptive approaches to sub-irrigation of potted Gerbera jamesonii and Chrysanthemum morifolium in greenhouse production. - 164 p.

Source: Masters Abstracts International, Volume: 49-02, page: 0952.

Thesis (M.Sc.)--University of Guelph (Canada), 2010.

Automated sub-irrigation of potted ornamentals based on physiological data collected in response to precision water content monitoring improves the efficiency with which the greenhouse industry utilizes water resources by minimizing fertilizer inputs and wastewater runoff, white maintaining economic goals of maximizing crop growth and quality. This thesis is an investigation of the effect of substrate moisture content on growth of Chrysanthemum morifolium Ramat., 'Surfine' and Gerbera jamesonii 'Festival Rose' potted in peat-based substrates and allowed to dry-down to pre-determined irrigation thresholds (thetat) to trigger sub-irrigation events. C. morifolium irrigated at theta t >20% and <40% exhibited an appearance of adequate quality with no differences in growth or daytime leaf gas exchange. G. jamesonii irrigated at thetat = 30 and 40% exhibited superior growth (shoot dry weight, root structure, flower number, scape height, leaf size and number) and compactness. Compared to plants sub-irrigated at a fixed 40% threshold, G. jamesonii grown using a variable threshold (15% to bud stage then 40% to maturity) exhibited equal growth and higher resistance to water stress. G. jamesonii adapted to irrigation thresholds ≥22% substrate moisture and wilted when water content fell to <20%.

ISBN: 9780494674918Subjects--Topical Terms:

1017825
Biology, Botany.

Adaptive approaches to sub-irrigation of potted Gerbera jamesonii and Chrysanthemum morifolium in greenhouse production.
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