Wilt of pigeon pea

This PPT includes introduction, symptoms, pathogen and management of wily of Pigeon pea.

1. Wilt of Red gram/Pigeon pea/Arhar

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: [email protected], [email protected]
Cell No. 91-9456613374

2. Wilt of Red gram/Pigeon pea/Arhar
•Reported by Butler in 1906
•Most dangerous disease of pigeon pea
•All arhar growing states of India
•Loss – 50%

3. Symptoms
•Generally 5-6 weeks DAS but at any stage
•Symptoms appear after rainy season
•Appear in patches
•Plant affected partially or completely
•Blacking on stem near soil & upward several feet
•Cortex filled with white/ white pinkish mycelial growth
•Wilting & dieing of plants

8. Systemic Position
Kingdom – Mycota/ Fungi
Division – Eumycota
Sub division – Deuteromycotina
Class – Hypomycetes
Order – Hypomycetales
Family – Dematiaceae
Genus – Alternaria
Species - solani

9. Pathogen: Fusarium udum - Perfect stage
Gibberella inica – Imperfect stage
•Vascular tissues – filled with mycelium
•Survive as macroconidia &chlamydospore

• Fav. Tem. – 17-19° C
• Microconidia- form on mycelium (6-11 x 2-3 µm)
•Macroconidia–form in sporodochia, 3-4 septa (15-50 x 3-5 µm)
•Chlamydospore – form on mycelium (5-10 µm) diameter
•Asospore – 8 (60-80 x 6-10 µm )

10. Macro conidia of Fusarium oxysporium

11. Macro and Micro conidia of Fusarium oxysporium

12. Chalamydospore of Fusarium oxysporium

14. Disease Management
•Crop rotation of 4 – 5 years
•Mixed cropping – Jower + Arhar
Jower ---- HCN
•Green Manuring – Neem & Jatropha
•Soil treatment – 1 part Formalin + 400 parts water
•Disease resistant varieties – C- 11, KWR-1, S-103,
Pusa 853, Pusa 855 etc.

15. Thank You