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White Rust / White Blisters of
Crucefers
DR. RAJBIR SINGH
Assistant Professor
Department of Plant Pathology
Gochar Mahavid...
White Rust / White Blisters of Crucefers
• All crucifers pls. affected
• All parts of country
• Occurs with D. M. (Parnosp...
Symptoms :
• All parts affected except roots
(1). Local infection
• Leaves, stem, flower stalk – white /creamy, yellow
bli...
(2). Systemic infection
• Systemic infection on new stem & inflorescence
• Hypertrophy
• Hyperplasia
• Swelling & distorti...
Pathogen – Albugo candida
• Survive in soil as Oospore in crop debris
• Survive in seed (primary inoculum)
• Survive on pe...
Systemic Position
Kingdom – Mycota/ Fungi
Division – Eumycota
Sub division – Mastigomycotina
Class – Oomycetes
Order – Per...
Disease Management
• Use certified seed
• Seed treatment – Metalaxyl (Apron 35 SD)- @ 6 gm/ kg seed
• Removal of weeds
• D...
Thank You
White rust of crucifers
White rust of crucifers
White rust of crucifers
White rust of crucifers
White rust of crucifers
White rust of crucifers
White rust of crucifers
White rust of crucifers
White rust of crucifers
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White rust of crucifers

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This PPT include introduction, symptoms, pathogen and management of white rust of crucifers

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White rust of crucifers

  1. 1. White Rust / White Blisters of Crucefers DR. RAJBIR SINGH Assistant Professor Department of Plant Pathology Gochar Mahavidyalaya, Rampur Maniharan, Saharanpur (UP), India Affiliated to Ch. Charan Singh University, Meerut (UP), India Email: rajbir25805@yahoo.com, rajbirsingh2810@gmail.com Cell No. 91-9456613374
  2. 2. White Rust / White Blisters of Crucefers • All crucifers pls. affected • All parts of country • Occurs with D. M. (Parnospora parasitica) • Loss – 17 - 37%
  3. 3. Symptoms : • All parts affected except roots (1). Local infection • Leaves, stem, flower stalk – white /creamy, yellow blister like pustules (1-2 mm) • Powdery growth on pls/ on lower surface of leaves • Yellow on upper surface • White pustules on stem & siliquae
  4. 4. (2). Systemic infection • Systemic infection on new stem & inflorescence • Hypertrophy • Hyperplasia • Swelling & distortion of stem & floral parts resulting in hypertrophy & hyperplasia • Known as Staghead
  5. 5. Pathogen – Albugo candida • Survive in soil as Oospore in crop debris • Survive in seed (primary inoculum) • Survive on perennial weeds – horse radish • Secondary spread by– sporangia & zoospore • R. H. – >75% • Tem. – 5-12° C
  6. 6. Systemic Position Kingdom – Mycota/ Fungi Division – Eumycota Sub division – Mastigomycotina Class – Oomycetes Order – Pernosporales Family – Albuginaceae Genus – Albugo Species - candidia
  7. 7. Disease Management • Use certified seed • Seed treatment – Metalaxyl (Apron 35 SD)- @ 6 gm/ kg seed • Removal of weeds • Destroy plant debris • Crop rotation of 2-3 years • Deep ploughing • Early sowing • Use balance fertilizers – no heavy use of N2 • Spray- Mencozeb (Dithane M- 45 / Indofil M-45) @ 2 kg/hec. • Ridomil MZ 72 WP (mixture of Metaxyl 64% + Mencozeb 8%) @ 2 kg/hec. 3 sprayers at 15 days interval
  8. 8. Thank You
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This PPT include introduction, symptoms, pathogen and management of white rust of crucifers

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