Organization: Colorado State University
Unit: Plant Pathology
Country: United States
Web: http://www.alliumnet.com/index.htm
Professional Societies:

Howard F. Schwartz is a Professor of Plant Pathology & Associate Department Head in the Department of Bioagricultural Sciences and Pest Management at Colorado State University. His Research and Extension Interests include Integrated Pest Management (IPM) - particularly of rust and white mold of dry bean as well as bacterial diseases and Iris Yellow Spot Virus of onion. Specific areas include management by disease survey, a reporting network supported by GPS/GIS technology, disease resistance, cultural practices, and timely applications of pesticides in response to environmental monitoring and crop/pest modeling. He is also interested in making sure the delivery of time-sensitive information on Integrated Pest Management and Crop Production Systems is coordinated via traditional methods (newsletters, bulletins, alerts, meetings, field days) and via the internet (Legume Pipe, VegNet, Allium Net). He is also the person leading and coordinating the CSU Node of the Bugwood Network.

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Image	Subject Name	Scientific Name	Description
5109038	Xanthomonas leaf blight of onion	Xanthomonas axonopodis pv. allii
5109039	Xanthomonas leaf blight of onion	Xanthomonas axonopodis pv. allii
5109040	Xanthomonas leaf blight of onion	Xanthomonas axonopodis pv. allii
5109041	Xanthomonas leaf blight of onion	Xanthomonas axonopodis pv. allii
5178022	botrytis rot	Botrytis allii	initial infection and colonization of onion bulb neck tissue by the Botrytis fungus, note gray to gray-black discoloration of infected onion tissue
5357153	clopyralid		Damage to a pinto bean plant resulting from the use of clopyralid herbicide.
5357154	clopyralid		Damage to pinto bean plants from use of clopyralid herbicide.
5357155	clopyralid		Damage to leaves of pinto bean plants caused by clopyralid herbicide.
5357156	clopyralid		Damage to pinto bean plant and pods, caused by use of clopyralid herbicide.
5357157	clopyralid		Damage to pods of pinto beans resulting from the use of clopyralid herbicide.
5357158	clopyralid		Damage to the roots of a pinto bean plant, resulting from the use of clopyralid.
5357159	clopyralid		Damage to the roots of a pinto bean plant caused by use of a clopyralid herbicide.
5357160	herbicides		Kidney bean leaves showing damage from use of Assure herbicide and crop oil.
5357161	herbicides		Kidney bean leaves showing damage from use of Assure herbicide and crop oil to control volunteer corn.
5357162	herbicides		Kidney bean leaves showing damage from use of Assure herbicide and crop oil.
5357163	herbicides		Kidney bean leaves showing damage from use of Assure herbicide and crop oil.
5357164	herbicides		Kidney bean leaves showing damage from use of Assure herbicide and crop oil.
5357165	herbicides		Kidney bean leaves showing damage from use of Assure herbicide and crop oil.
5357166	heat		Young pinto bean plants suffering from heat/moisture stress.
5357167	heat		Young pinto bean plants suffering from heat/moisture stress.
5357168	seedcorn maggot	Delia platura	Damage to a young bean plant caused by the seedcorn maggot (Delia platura).
5357169	seedcorn maggot	Delia platura	Damage to a young bean plant caused by the seedcorn maggot (Delia platura).
5357170	seedcorn maggot	Delia platura	Damage to a young bean plant caused by the seedcorn maggot (Delia platura).
5357171	seedcorn maggot	Delia platura	Damage to a young bean plant caused by the seedcorn maggot (Delia platura).
5357172	Sclerotinia rot	Sclerotinia sclerotiorum	Bean plants destroyed by white mold (Sclerotinia sclerotiorum).
5357173	common bean	Phaseolus vulgaris	Seeds and debris remaining in a bean field after harvest, which could result in sprouting of volunteer plants and carryover of diseases.
5357174	common bean	Phaseolus vulgaris	Debris remaining in a bean field after harvest, which could result in volunteer plants and a carryover of disease organisms.
5357175	common bean	Phaseolus vulgaris	Debris remaining in the field after harvest of dry beans, which could result in volunteer plants and disease carryover the following year.
5357176	rust	Uromyces appendiculatus	Close-up view of the pycnium of bean rust (Uromyces appendiculatus).
5357177	rust	Uromyces appendiculatus	Close-up view of the pycnium of bean rust (Uromyces appendiculatus).
5357178	rust	Uromyces appendiculatus	Close-up view of a pycnium and an aecium of bean rust (Uromyces appendiculatus).
5357179	rust	Uromyces appendiculatus	Close-up view of a pycnium and an aecium of bean rust (Uromyces appendiculatus).
5357180	common bean	Phaseolus vulgaris	Spectrum weather station set up in the canopy of a bean field for use in disease modeling research.
5357181	common bean	Phaseolus vulgaris	Spectrum weather station set up in the canopy of a bean field for use in disease modeling research.
5357182	common bean	Phaseolus vulgaris	Wetness leaf sensor of a Spectrum weather station, set up in the canopy of a bean field for use in disease modeling research.
5357183	common bean	Phaseolus vulgaris	Location in a bean field with 50% canopy cover.
5357184	common bean	Phaseolus vulgaris	Location in a bean field with 60% canopy cover.
5357185	common bean	Phaseolus vulgaris	Location in a bean field with 70% canopy cover.
5357186	common bean	Phaseolus vulgaris	Location in a bean field with 80% canopy cover.
5357187	common bean	Phaseolus vulgaris	Location in a bean field with 90% canopy cover.
5357188	common bean	Phaseolus vulgaris	Location in a bean field with 100% canopy cover.
5357189	common bean	Phaseolus vulgaris	Dry bean field day in Wray, Colorado, 1997, conducted by Colorado State University Extension.
5357190	common bean	Phaseolus vulgaris	Dry bean field day in Wray, Colorado, 1998, conducted by Colorado State University Extension.
5357191	common bean	Phaseolus vulgaris	Dry bean field day in Ovid, Colorado, 1999, conducted by Colorado State University Extension.
5357192	common bean	Phaseolus vulgaris	Dry bean field day in Ovid, Colorado, 2000, conducted by Colorado State University Extension.
5357193	survey		A CoAgMet (Colorado Agricultural Meteorological Network) weather station equipment used for disease modeling at Avondale, Colorado.
5357194	survey		A CoAgMet (Colorado Agricultural Meteorological Network) weather station equipment used for disease modeling at Peckham, Colorado.
5357195	survey		A CoAgMet (Colorado Agricultural Meteorological Network) weather station equipment used for disease modeling at Holyoke, Colorado.
5357196	barley	Hordeum vulgare	Some barley heads in the field.
5357197	Russian wheat aphid	Diuraphis noxia	Slight damage from Russian wheat aphid (Diuraphis noxia) on barley plants resistant to the aphid.
5357198	Russian wheat aphid	Diuraphis noxia	Damage from Russian wheat aphid (Diuraphis noxia) on susceptible barley plants.
5357199	Rhizoctonia damping-off, blight and rot	Rhizoctonia solani	Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani).
5357200	Rhizoctonia damping-off, blight and rot	Rhizoctonia solani	Sugar beet plant showing symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani).
5357201	Rhizoctonia damping-off, blight and rot	Rhizoctonia solani	Sugar beet plant showing advanced symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani).
5357202	Rhizoctonia damping-off, blight and rot	Rhizoctonia solani	Sugar beet plant pulled up to show root symptoms of infection with Rhizoctonia crown rot (Rhizoctonia solani).
5357203	Rhizoctonia damping-off, blight and rot	Rhizoctonia solani	Sugar beet plant pulled up and sliced open to show signs of infection with Rhizoctonia crown rot (Rhizoctonia solani) in the root.
5357204	Rhizoctonia damping-off, blight and rot	Rhizoctonia solani	Close-up view of sugar beet root sliced open to show signs of infection with Rhizoctonia crown rot (Rhizoctonia solani).
5357205	cotton	Gossypium hirsutum	Cotton seedlings in the field.
5357206	cotton	Gossypium hirsutum	Cotton seedlings in the field.
5357207	cotton	Gossypium hirsutum	Cotton seedlings in the field.