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Experimental sugar beet cultivars evaluated for rhizomania resistance and storability in Idaho, 2008

Strausbaugh, C.A. and Eujayl, Imad A. and Rearick, E. and Foote, P. (2009) Experimental sugar beet cultivars evaluated for rhizomania resistance and storability in Idaho, 2008. Plant Disease Management Reports. 3:p. FC107.

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Thirty-five experimental and four commercial check sugar beet cultivars were evaluated in a commercial sprinklerirrigated
sugar beet field near Jerome, ID where winter wheat was grown in 2007. The field trial relied on natural infection
for rhizomania development. The plots were planted on 22 Apr 08 to a density of 142,560 seeds/A, and thinned to 47,520
plants/A on 30 May. Plots were four rows (22-in. row spacing) and 34.5 ft long. The experimental design was a randomized
complete block design with four replications per cultivar. The crop was managed according to standard cultural practices.
The roots were mechanically topped and the center two rows were collected with a mechanical harvester on 9 Oct. At
harvest the roots were evaluated for rhizomania (Rz rating) using a scale of 0-9 (0 = healthy and 9 = dead). The percent
sucrose at harvest was established based on two eight-root samples from each plot. The samples were submitted to the
Amalgamated Tare Lab (determined percent sucrose, conductivity, nitrates, and tare). At harvest, eight roots per plot were
also placed in a mesh onion bag, weighed, and placed in an indoor commercial sugar beet storage facility on 9 Oct set to hold
35°F. On 29 Jan 09, the roots were evaluated for the percentage of surface area covered by fungal growth (an undescribed
basidiomycete that correlates with sucrose loss in storage). On 2 Feb 09 roots were retrieved after 115 days in storage and
evaluated for weight and percent sucrose (via gas chromatography). To establish percent reduction in sucrose at harvest
versus storage only samples from the same plots were compared. Data were analyzed using the general linear models
procedure (Proc GLM-SAS), and Fisher’s protected least significant difference was used for mean comparisons.

Item Type: Article
NWISRL Publication Number: 1309
Subjects: Irrigated crops > Sugarbeet
Depositing User: Users 6 not found.
Date Deposited: 30 Nov 2009 21:40
Last Modified: 17 Oct 2016 16:21
Item ID: 1331