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NALDC Record Details:

Effect of Furrow Irrigation on the Severity of False Smut in Susceptible Rice Varieties

Permanent URL:
http://handle.nal.usda.gov/10113/42848
Abstract:
False smut (Ustilaginoidea virens) is an important emerging disease of rice (Oryza sativa) in the southern United States, where all major rice cultivars and hybrids are susceptible to the disease. False smut susceptibility was evaluated in traditional paddy-rice fields and under furrow-irrigated conditions to determine the effects of alternative agricultural practices on the severity of this disease. Highly effective false smut suppression was observed in furrow-irrigated rice, where the disease was nearly eliminated in susceptible rice entries. False smut suppression was observed for two hybrids and one conventional rice cultivar, demonstrating that suppression was not limited to specific germplasm sources. Kernel smut severity was also monitored, but no effect on this disease was observed from the irrigation treatments. Therefore, suppression of disease severity in nonflooded rice appears to be a phenomenon unique to the rice–false smut pathosystem, which can be exploited to achieve effective field resistance to this disease.
Author(s):
Brooks, Steven A. , Anders, Merle M. , Yeater, Kathleen M.
Subject(s):
Oryza sativa , rice , grain crops , Ustilaginoidea , plant pathogenic fungi , smut diseases , emerging diseases , furrow irrigation , cultivars , hybrids , disease resistance , disease severity , disease control , flood irrigation , germplasm , Arkansas
Format:
p. 570-574.
Note:
Includes references
Source:
Plant disease: an international journal of applied plant pathology 2010 May, v. 94, no. 5
Language:
English
Year:
2010
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.