Rhizoctonia root rot resistance in commercial sugar beet cultivars in Twin Falls County, ID, 2012

Strausbaugh, C.A. and Eujayl, Imad A. (2013) Rhizoctonia root rot resistance in commercial sugar beet cultivars in Twin Falls County, ID, 2012. Plant Disease Management Reports. 7:p. FC074.

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Abstract

Rhizoctonia root rot continues to be a concerning problem in sugar beet production areas. To investigate resistance to this disease in 26 experimental sugar beet cultivars, field studies were conducted with three Rhizoctonia solani AG-2-2 IIIB strains. Based on means for the 26 cultivars, surface rot ranged from 0 to 93% depending on the strain-cultivar combination. Both the number of dead plants and root surface area rotted resulted in significant (P < 0.0004) cultivar differences. Based on Spearman’s rank correlation coefficient, there was always a significant relationship (P < 0.0279) when comparing cultivar performance across all three strains regardless of disease variable. The three most resistant cultivars performed well against all strains and variables, but still had half the root surface area rotted. Additional efforts need to be made to get more resistance to this disease problem in commercial sugar beet cultivars.

Item Type:	Article
NWISRL Publication Number:	1486
Subjects:	Irrigated crops > Sugarbeet > Root rots Irrigated crops > Sugarbeet
Depositing User:	Users 6 not found.
Date Deposited:	04 Mar 2014 00:10
Last Modified:	04 Mar 2014 00:11
Item ID:	1527
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1527