This PPT includes introduction, symptoms, causal agents and management of khaira disease of rice

1. KHAIRA DISEASE OF RICE
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. Khaira disease of Rice
• Reported by Dr. Y. L. Nene
• Trai region of UP
• Loss – 25%
Symptoms:
• Seedling stage – 10-15 DAS
• Firstly – interveinal chlorosis & on the base of new
leaves in result formation of long white/yellow
streaks

3. • On lower leaves – small brown / bronze /tan color spots
• Later spots merged – drying of leaves & become tan color
• First on upper then on lower surface of leaves
• No Pl. growth
• Roots - brown
• Ear - less
• Grain less & light in weight
Cause agent – Deficiency of Zinc
• Zn catalyze the enzymatic activities & oxidation reduction
reaction

6. Disease Management
• Dressing of sprouted 1% zinc oxide
• Root dipping with 2% Zinc oxide for 1- 2 minutes
• Zinc sulphate 25 – 30 kg/ha as soil application
• 5 kg ZnSO4 + 2.5 kg slaked lime + 1000 litre water
Ist spray after – 10 DAS in nursery
IIend spray after – 20 DAS in nursery
IIIrd spray after – 15-30 DAP

7. Thank You