Influence of Rhizoctonia-bacterial Root Rot Complex on Storability of Sugarbeet

Strausbaugh, C.A. and Rearick, E. and Eujayl, Imad A. and Foote, P. (2011) Influence of Rhizoctonia-bacterial Root Rot Complex on Storability of Sugarbeet. Journal of Sugar Beet Research. 48(3 & 4):155-180. 25 October 2011.

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Abstract

The Rhizoctonia-bacterial root rot complex can lead to yield loss in the field but may also lead to problems with sucrose loss in storage. Thus, studies were conducted to investigate if placing sugarbeet roots suffering from root rot together with healthy roots could compromise the ability of the healthy roots to retain sucrose. Over a three year period, root samples from three commercial cultivars were compared in storage as a healthy (eight healthy roots) or rotted (eight healthy roots + one rotted root) treatment inside an outdoor storage pile. The experiment was arranged as a split block (healthy in one half of block and rotted in the other) with the whole blocks arranged in a randomized complete block design with four replications. Samples were retrieved from storage in December, January, and February and evaluated for discolored and frozen root area, weight loss, and sucrose reduction and recovery. When comparing the healthy to the rotted treatment over the nine year x sampling date combinations, the Wilcoxon signed-rank test indicated the median change for discoloration (7% increase), frozen area (14% increase), sucrose loss (5% loss), and recoverable sucrose (689 kg/ha less or 8% reduction) were significantly different from zero (P = 0.008, 0.031, 0.007, and 0.008, respectively). These data indicate that the Rhizoctonia-bacterial root rot complex not only leads to yield loss in the field but can also negatively affect neighboring healthy roots in storage leading to additional sucrose losses.

Item Type:	Article
NWISRL Publication Number:	1406
Subjects:	Irrigated crops > Sugarbeet > Root rots Irrigated crops > Sugarbeet Irrigated crops > Sugarbeet > Root rots > Bacteria
Depositing User:	Users 6 not found.
Date Deposited:	28 Mar 2013 21:17
Last Modified:	08 Aug 2016 17:05
Item ID:	1484
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1484