diseases of beans and peas

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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 Presentation

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Page 1: Diseases of Beans and Peas
Page 2: Diseases of Beans and Peas

Diseases of Beans and Peas

Page 3: 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

Page 4: Diseases of Beans and Peas

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

Page 5: Diseases of Beans and Peas

Web BlightRhizoctonia solani

• Beans

• Soilborne• Favored by warm temperatures, rain and high humidity

Page 6: Diseases of Beans and Peas

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

Page 7: Diseases of Beans and Peas

Southern Blight Sclerotium

rolfsii• Beans

• Soilborne•Favored by warm, wet conditions

• Deep plowing to bury sclerotia• Crop rotation• Resistant varieties

Page 8: Diseases of Beans and Peas

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

Page 9: Diseases of Beans and Peas
Page 10: Diseases of Beans and Peas

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)

Page 11: Diseases of Beans and Peas
Page 12: Diseases of Beans and Peas

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 (?)

Page 13: Diseases of Beans and Peas
Page 14: Diseases of Beans and Peas

Halo Blight Pseudomonas syringae pv. phaseolicola

• Seed-borne• Splashing water• Systemic in the plant• Favored by cool, wet weather

5363914

5363916

• Clean seed• Resistant varieties• Copper fungicides

Beans

Page 15: Diseases of Beans and Peas
Page 16: Diseases of Beans and Peas

Bean RustUromyces

appendiculatus

• Beans

• Windborne • Favored by warm, humid conditions

• Resistant varieties• Avoid excessive N• Sanitation• Fungicides

Page 17: Diseases of Beans and Peas
Page 18: Diseases of Beans and Peas

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/

Page 19: Diseases of Beans and Peas

Resources

LSU AgCenter Plant Diagnostic Center

LSU AgCenter Soil Testing & Plant Analysis Lab