Diseases of Beans and Peas Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas,...

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Transcript of Diseases of Beans and Peas Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas,...

Page 1: 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.
Page 2: 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.

Diseases of Beans and Peas

Page 3: 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.

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 Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.

Web BlightRhizoctonia solani

• Beans

• Soilborne• Favored by warm

temperatures, rain and

high humidity

Page 6: 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.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.
Page 10: 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.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.
Page 12: 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.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.
Page 14: 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.

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 Root Rots Fusarium solani f. sp. phaseoli f. sp. pisi Beans and peas, respectively Soilborne Favored by wet or poorly drained.
Page 16: 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.

Bean RustUromyces

appendiculatus

• Beans

• Windborne • Favored by warm,

humid conditions

• Resistant varieties• Avoid excessive N• Sanitation• Fungicides

Page 17: 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.
Page 18: 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.

Resources

http://lsuagcenter.com/plantdiagnostics

http://www.ipmimages.org/

http://www.ipm.ucdavis.edu/

http://vegetablemdonline.ppath.cornell.edu

http://edis.ifas.ufl.edu/department_plant_pathology

http://laplantpath.wordpress.com

http://www.extension.org/

Page 19: 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.

Resources

LSU AgCenter Plant Diagnostic Center

LSU AgCenter Soil Testing & Plant Analysis Lab