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Title: Estimating nitrogen fertilizer requirements of canola (Brassica napus L.) using sensor-based estimates of yield potential and crop response to nitrogen
Authors: Holzapfel, Christopher Brian
Supervisor: Bullock, Paul (Soil Science) Lafond, Guy (Agriculture and Agri-Food Canada, Adjunct, Soil Science)
Examining Committee: Flaten, Don (Soil Science) Martens, Gary (Plant Science)
Graduation Date: February 2008
Keywords: nitrogen use-efficiency
variable rate
normalized difference vegetation index
precision agriculture
Issue Date: 18-Jan-2008
Abstract: The feasibility of using optical sensors and non-nitrogen limiting reference crops to determine post-emergent nitrogen fertilizer requirements of canola was evaluated. Normalized difference vegetation index was well suited for estimating yield potential and nitrogen status. Although sensor-based nitrogen management was generally agronomically feasible for canola, the economic benefits of doing so remain uncertain because of the added cost of applying post-emergent nitrogen.
Appears in Collection(s):FGS - Electronic Theses & Dissertations (Public)

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