학술논문
Efficacy of water-dispersible formulations of biological control strains of Aspergillus flavus for aflatoxin management in corn.
Document Type
Article
Source
Subject
*ASPERGILLUS flavus
*BIOLOGICAL control of phytopathogenic fungi
*AFLATOXINS
*CORN disease & pest prevention
*APPLICATION of agricultural chemicals
*FUNGICIDES
*FOOD contamination
*FUNGAL metabolites
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Language
ISSN
1944-0049
Abstract
Field experiments were conducted in 2011 and 2012 to evaluate the efficacy of water-dispersible granule (WDG) formulations of biocontrol strains ofAspergillus flavusin controlling aflatoxin contamination of corn. In 2011, when aflatoxin was present at very high levels, there was no WDG treatment that could provide significant protection against aflatoxin contamination. The following year a new WDG formulation was tested that resulted in 100% reduction in aflatoxin in one field experiment and ≥ 49% reduction in all five WDG treatments with biocontrol strain 21882. Large sampling error, however, limited the resolution of various treatment effects. Corn samples were also subjected to microbial analysis to understand better the mechanisms of successful biocontrol. In the samples examined here, the size of theA. flavuspopulation on the grain was associated with the amount of aflatoxin, but the toxigenic status of that population was a poor predictor of aflatoxin concentration. [ABSTRACT FROM PUBLISHER]