Thank you for visiting the disease sub-page of the WSU Seed Crop IPM website. This website is maintained by the WSU Seed Crop Team, a cross-state, interdisciplinary project to protect and enhance the seed industry in Washington State. As this page lists a large number of reports, presentations, articles, and web links, use the directories below to find resources by crop or by disease.
By Crop
General Seed Crops, Carrot Seed, Onions, Parsley, Pea Seed, Potatoes, Radish Seed, Spinach Seed
By Disease
Seed Crop Diseases in General, Bacterial Blight, Botrytis, Cladosporium, Cucumber Mosaic Virus, Fusarium Wilt, Iris Yellow Spot Virus, Leaf Spot, Powdery Mildew, Root Rot, Seed Rot, Seedling Blight, Stemphylium, Verticillium Wilt
By Crop
General
"Management of Diseases in Seed Crops" chapter (by Lindsey du Toit) from the Encyclopedia of Plant and Crop Science, 2004
Washington
State University, Oregon State University, and the University of Idaho
combine resources for the Pacific
Northwest Vegetable Extension Group website, which includes diagnostic
tools, events, and resources for disease management information.
Presentation on the infection of seed and transmission of seed borne pathogens by Lindsey du Toit at the February 2008 Organic Seed Conference in Salem, Oregon
Short course in disease management in vegetable seed crops presented by Lindsay du Toit at the February 2008 Organic Seed Conference in Salem, Oregon
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Carrot Seed
Using coppers
to manage bacterial blight in carrot seed production.
The importance of preventive applications.
Lindsey du Toit, 2008 CBVSA Annual Meeting
Recent research on powdery mildew in carrot seed, including impacts of various treatments and timing of same.
Lindsey du Toit, 2008 CBVSA Annual Meeting
"First
Report of Powdery
Mildew of Carrot and Parsley Caused by Erysiphe heraclei in
Washington State," article by Dean Glawe et al. in January 2005 issue
of Plant Health Progress
Article
on bacterial
blight in seed carrots by Lindsey du Toit et al., from August 2005
issue of Plant Disease
Onions
New tools developed for identification of Botrytis neck rot in onions.
Martin Chilvers, 2008 CBVSA Annual Meeting
Evaluation of Actigard for control of Iris
Yellow Spot Virus in onion.
Importance of thrips control.
Lindsey du Toit, 2008 CBVSA Annual Meeting
Feature article from the December 2006 issue of Plant Disease on iris yellow spot virus in onion by David Gent, Lindsey du Toit et al.
Article on sequence diversity of the iris yellow spot virus NP gene by Hanu Pappu et al. in November 2005 issue of Archives of Virology
Article on prevalence of Botrytis blight in onion seed crops by Lindsey du Toit et al., from October 2004 issue of Plant Disease
Article on real-time, quantitative PCR seed assay for Botrytis spp. that cause neck rot of onion by Martin Chilvers et al., from May 2007 issue of Plant Disease
Article
discussing various Botrytis spp.
in onion by Martin Chilvers and Lindsey du Toit from November 2006 Plant
Health Progress
A new
powdery mildew appears in onions, as discussed by Lindsey du Toit,
Dean Glawe, and Gary Pelter in this November 2004 article in Plant
Health Progress
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Parsley
"First Report of Powdery Mildew of Carrot and Parsley Caused by Erysiphe heraclei in Washington State," article by Dean Glawe et al. in January 2005 issue of Plant Health Progress
Pea Seed
Presentation
by Lyndon Porter on organic and commercial seed
treatments to manage seed rot of peas.
Two
2007 reports by Lyndon Porter about management of seed and root rot pathogens
of processed peas. First, efficacy of various commercial
and organic seed treatments in reducing seed and root rot of peas in
the presence of metalaxyl-resistant Pythium. Second, an assessment
of organic
seed treatments to manage seed and root rot on peas in a commercial
organic field.
Potatoes
A new powdery mildew appears in potatoes, as discussed by Dean Glawe, Lindsey du Toit, and Gary Pelter in this December 2004 article in Plant Health Progress
Radish Seed
"Wilt
of Radish Caused by Fusarium oxysporum f. sp. raphani in
Washington State" article by Lindsey du Toit and Gary Pelter in
the June 2003 issue of Plant Health Progress.
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Spinach Seed
Efficacy of organic seed and drench treatments for control of soilborne seedling blight in spinach.
Jaime Cummings, 2008 WWHA/PSSGA Meeting
Cucumber mosaic virus studies in PNW spinach seed, including rate of seed transmission and implications for roguing.
Lindsey du Toit, 2008 WWHA/PSSGA Annual Meeting
How amending soil with limestone might suppress Fusarium wilt in spinach seed crops.
Lindsey du Toit, 2008 WWHA/PSSGA Annual Meeting
Article on Cladosporium and Stemphylium leaf spot in spinach by Pablo Hernandez-Perez and Lindsey du Toit from February 2006 issue of Plant Disease
Article on efficacy of hot water and chlorine against various diseases of spinach seed by Lindsay du Toit and Pablo Hernandez-Perez from December 2005 issue of Plant Disease
Article
on Verticillium
wilt in spinach seed production by Lindsey du Toit, Mike Derie, and
Pablo Hernandez-Peres from January 2005 issue of Plant Disease
- return to top -
By Disease
General
Washington
State University, Oregon State University, and the University of Idaho
combine resources for the Pacific
Northwest Vegetable Extension Group website, which includes diagnostic
tools, events, and resources for disease management information.
"Management of Diseases in Seed Crops" chapter (by Lindsey du Toit) from the Encyclopedia of Plant and Crop Science, 2004
Presentation on the infection of seed and transmission of seed borne pathogens by Lindsey du Toit at the February 2008 Organic Seed Conference in Salem, Oregon
Short course in disease management in vegetable seed crops presented by Lindsay du Toit at the February 2008 Organic Seed Conference in Salem, Oregon
Bacterial Blight
Using coppers
to manage bacterial blight in carrot seed production.
The importance of preventive applications.
Lindsey du Toit, 2008 CBVSA Annual Meeting
Article on bacterial blight in seed carrots by Lindsey du Toit et al., from August 2005 issue of Plant Disease
- return to top -
Botrytis
New tools developed for identification of Botrytis neck rot in onions.
Martin Chilvers, 2008 CBVSA Annual Meeting
Article on prevalence of Botrytis blight in onion seed crops by Lindsey du Toit et al., from October 2004 issue of Plant Disease
Article on real-time, quantitative PCR seed assay for Botrytis spp. that cause neck rot of onion by Martin Chilvers et al., from May 2007 issue of Plant Disease
Article
discussing various Botrytis spp.
in onion by Martin Chilvers and Lindsey du Toit from November 2006 Plant
Health Progress
Cladosporium
Article on Cladosporium and Stemphylium leaf spot in spinach by Pablo Hernandez-Perez and Lindsey du Toit from February 2006 issue of Plant Disease
Article on efficacy of hot water and chlorine against various diseases of spinach seed by Lindsay du Toit and Pablo Hernandez-Perez from December 2005 issue of Plant Disease
- return to top -
Cucumber Mosaic Virus
Cucumber mosaic virus studies in PNW spinach seed, including rate of seed transmission and implications for roguing.
Lindsey du Toit, 2008 WWHA/PSSGA Annual Meeting
Fusarium Wilt
How amending soil with limestone might suppress Fusarium wilt in spinach seed crops.
Lindsey du Toit, 2008 WWHA/PSSGA Annual Meeting
"
Wilt of Radish Caused by Fusarium oxysporum f. sp. raphani in Washington State" article by Lindsey du Toit and Gary Pelter in the June 2003 issue of Plant Health Progress.
Iris Yellow Spot Virus
Evaluation of Actigard for control of Iris
Yellow Spot Virus in onion.
Importance of thrips control.
Lindsey du Toit, 2008 CBVSA Annual Meeting
Feature article from the December 2006 issue of Plant Disease on iris yellow spot virus in onion by David Gent, Lindsey du Toit et al.
Article on sequence diversity of the iris yellow spot virus NP gene by Hanu Pappu et al. in November 2005 issue of Archives of Virology
- return to top -
Leaf Spot
Article on Cladosporium and Stemphylium leaf spot in spinach by Pablo Hernandez-Perez and Lindsey du Toit from February 2006 issue of Plant Disease
Powdery Mildew
Recent research on powdery mildew in carrot seed, including impacts of various treatments and timing of same.
Lindsey du Toit, 2008 CBVSA Annual Meeting
"First Report of Powdery Mildew of Carrot and Parsley Caused by Erysiphe heraclei in Washington State," article by Dean Glawe et al. in January 2005 issue of Plant Health Progress
A new powdery mildew appears in onions, as discussed by Lindsey du Toit, Dean Glawe, and Gary Pelter in this November 2004 article in Plant Health Progress
A new powdery mildew appears in potatoes, as discussed by Dean Glawe, Lindsey du Toit, and Gary Pelter in this December 2004 article in Plant Health Progress
Root Rot
Two
2007 reports by Lyndon Porter about management of seed and root rot pathogens
of processed peas. First, efficacy of various commercial
and organic seed treatments in reducing seed and root rot of peas in
the presence of metalaxyl-resistant Pythium. Second, an assessment
of organic
seed treatments to manage seed and root rot on peas in a commercial
organic field.
Seed Rot
Presentation by Lyndon Porter on organic and commercial seed treatments to manage seed rot of peas.
Two
2007 reports by Lyndon Porter about management of seed and root rot pathogens
of processed peas. First, efficacy of various commercial
and organic seed treatments in reducing seed and root rot of peas in
the presence of metalaxyl-resistant Pythium. Second, an assessment
of organic
seed treatments to manage seed and root rot on peas in a commercial
organic field.
- return to top -
Seedling Blight
Efficacy of organic seed and drench treatments for control of soilborne seedling blight in spinach.
Jaime Cummings, 2008 WWHA/PSSGA Meeting
Stemphylium
Article on Cladosporium and Stemphylium leaf spot in spinach by Pablo Hernandez-Perez and Lindsey du Toit from February 2006 issue of Plant Disease
Article on efficacy of hot water and chlorine against various diseases of spinach seed by Lindsay du Toit and Pablo Hernandez-Perez from December 2005 issue of Plant Disease
Verticillium Wilt
Article on Verticillium wilt in spinach seed production by Lindsey du Toit, Mike Derie, and Pablo Hernandez-Peres from January 2005 issue of Plant Disease
Article on efficacy of hot water and chlorine against various diseases of spinach seed by Lindsay du Toit and Pablo Hernandez-Perez from December 2005 issue of Plant Disease
- return to top -
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