diseases of beans and peas
DESCRIPTION
Diseases of Beans and Peas. Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi. Beans and peas, respectively Soilborne Favored by wet or poorly drained soils Avoid areas with a history of disease Crop rotation Improve drainage Use fungicide-treated seed. - PowerPoint PPT PresentationTRANSCRIPT
Diseases of Beans and Peas
Root RotsFusarium solani
f. sp. phaseoli
f. sp. pisi• Beans and peas, respectively
• Soilborne• Favored by wet or poorly drained soils
• Avoid areas with a history of disease • Crop rotation• Improve drainage• Use fungicide-treated seed
Root RotsRhizoctonia solani
• Beans and peas
• Soilborne• Favored by wet or poorly drained soils
• Avoid areas with a history of disease • Crop rotation• Improve drainage• Use fungicide-treated seed
Web BlightRhizoctonia solani
• Beans
• Soilborne• Favored by warm temperatures, rain and high humidity
Botrytis Blight (Gray
Mold)Botrytis cinerea
• Beans & English peas
• Soilborne• Windborne spores• Favored by cool (68-77F), wet conditions
• Improve air circulation• Avoid excessive fertilization• Use fungicides during flowering
Southern Blight Sclerotium
rolfsii• Beans
• Soilborne•Favored by warm, wet conditions
• Deep plowing to bury sclerotia• Crop rotation• Resistant varieties
White Mold (Watery Soft Rot)
Sclerotinia sclerotiorum
• Beans & English peas
• Soilborne• Windborne spores• Favored by cool (68-77F), wet conditions
• Improve air circulation• Avoid excessive fertilization• Use fungicides during flowering
AnthracnoseColletotrichum lindemuthianum
Beans and southern peas
Primarily seedborne Can survive on infected crop residues in soil Splash-dispersed Resistant varieties Clean seed Fungicides Crop rotation (2 years between susceptible crops)
Common Bacterial
Blight Xanthomonas campestris pv. phaseoli
• Beans and southern peas
• Seed-borne• Infected crop residue• Splashing water• Favored by warmer temperatures & high humidity
• Clean seed• Resistant cultivars• Crop rotation• Copper fungicides (?)
Halo Blight Pseudomonas syringae pv. phaseolicola
• Seed-borne• Splashing water• Systemic in the plant• Favored by cool, wet weather
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• Clean seed• Resistant varieties• Copper fungicides
Beans
Bean RustUromyces
appendiculatus
• Beans
• Windborne • Favored by warm, humid conditions
• Resistant varieties• Avoid excessive N• Sanitation• Fungicides
Resources
http://lsuagcenter.com/plantdiagnosticshttp://www.ipmimages.org/http://www.ipm.ucdavis.edu/http://vegetablemdonline.ppath.cornell.eduhttp://edis.ifas.ufl.edu/department_plant_pathology
http://laplantpath.wordpress.com
http://www.extension.org/
Resources
LSU AgCenter Plant Diagnostic Center
LSU AgCenter Soil Testing & Plant Analysis Lab