Campus Units
Plant Pathology and Microbiology
Document Type
Article
Publication Version
Published Version
Publication Date
9-2010
Journal or Book Title
Phytopathology
Volume
100
Issue
9
First Page
931
Last Page
940
DOI
10.1094/PHYTO-100-9-0931
Abstract
The prevalence of soybean fields with plants infected with Soybean mosaic virus (SMV) in Iowa is assumed to be random, because the primary source of the virus is SMV-infected seed. Data collected from 2,500 soybean fields sampled over a 3-year period as part of the Iowa Soybean Disease Survey (2005 to 2007) were used to evaluate this assumption. SMV was first detected in early June of each year but counties in which it was first detected varied among years. Prevalence at the county scale at end of season was 32.3, 27.3, and 89.9% in 2005, 2006, and 2007, respectively. End-of-season incidence of SMV within SMV-positive counties was 1.5 to 25.0, 1.7 to 24, and 1.8 to 58% in 2005, 2006, and 2007, respectively. The number of fields in which plants infected with SMV were detected increased at the linear rate of approximately one new field every 2 days in 2007, compared with one new field every 22 days (2005) and 21 days (2006), with coefficients of determination (R2) of 93.2 to 96.8% using the linear model. Weak spatial dependence for end-of-season SMV incidence was detected using Moran's Index, indicating that the risk for SMV incidence at the county scale within Iowa at the end of the growing season is not random.
Copyright Owner
The American Phytopathological Society
Copyright Date
2010
Language
en
File Format
application/pdf
Recommended Citation
Lu, X.; Robertson, A. E.; Byamukama, E.; and Nutter, F. W. Jr., "Prevalence, Incidence, and Spatial Dependence of Soybean mosaic virus in Iowa" (2010). Plant Pathology and Microbiology Publications. 228.
https://lib.dr.iastate.edu/plantpath_pubs/228
Included in
Agricultural Science Commons, Agriculture Commons, Agronomy and Crop Sciences Commons, Plant Pathology Commons
Comments
This article is published as Lu, X., Robertson, A. E., Byamukama, E., and Nutter, F. W., Jr. 2010. Prevalence, incidence and spatial dependence of Soybean mosaic virus in Iowa. Phytopathology 100:931-940. doi: 10.1094/PHYTO-100-9-0931. Posted with permission.