Evaluation of fungicide and biological treatments for control of fungal storage rots in sugar beet, 2014

Strausbaugh, C.A. and Olsen L, Nora and Frazier J, Mary and Wambolt, C (2015) Evaluation of fungicide and biological treatments for control of fungal storage rots in sugar beet, 2014. Plant Disease Management Reports. 9(FC122).

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Abstract

Preventing sucrose losses in storage is important to the economic viability of the sugar beet industry. In an effort to establish additional measures for reducing sucrose losses in storage, ten fungicide and/or biological treatments were evaluated on sugar beet roots in a commercial sugar beet storage building for their ability to limit fungal growth on roots harvested 2 Oct. Six of the treatments were applied as a direct spray to roots, but two treatments were applied as a cold fog and two others were applied as a thermal fog. The treated eight-beet root samples were arranged in a randomized complete block design with 6 replications on top of the commercial sugar beet pile inside a storage building. Roots were evaluated for fungal growth, root rot, weight loss, and sucrose reduction. Fungal growth on the root surface ranged from 0 to 58% depending on the rating date and treatment. After 136 days in storage, root rot ranged from 4 to 34%, weight loss ranged from 7.5 to 10.2%, and sucrose reduction ranged from 17 to 33%. The treatments that reduced rot and sucrose reduction the most were Phostrol, Propulse, and Stadium applied as direct sprays and Propulse as a cold fog. Thus, the results indicate that several of the fungicides evaluated have the potential to protect roots from fungal rot in sugar beet storage piles, which could lead to considerable economic benefit for the sugar beet industry.

Item Type:	Article
NWISRL Publication Number:	1561
Subjects:	Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet > Storage Irrigated crops > Sugarbeet
Depositing User:	Dan Stieneke
Date Deposited:	05 Aug 2015 20:01
Last Modified:	05 Aug 2015 20:01
Item ID:	1603
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1603