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1. PRINCIPLES OF PLANT DISEASE MANAGEMENT
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. Principles of Plant Disease Management
(A). Avoidance– avoid the contact between plant & pathogen
(1). Selection of field
(2). Selection of area
(3). Time of sowing
(4). Disease escaping varieties
(5). Selection of seed
(6) Modification of cultural practices

3. (B). Exclusion- preventing the inoculum
from entering or establishing
in the area where it is not present
(1). Seed treatment
(2). Inspection & certification
(3). Eradication of insect vectors
(4). Plant Quarantine

4. (C). Eradication – reducing, inactivating, eliminating or
destroying inoculum where it is already established
(1). Biological control
(2). Crop rotation
(3). Removal of diseased pls. or pls. parts
(i). Roguing
(ii). Eradication of alternate & collateral hosts
(iii). Sanitation
(4). Heat & chemical treatment of diseased pls.
(5). Soil treatment - (i). Use of chemicals (ii). Heat energy
(iii). Flooding (iv). Fallowing

5. (D). Protection- preventing infection by creating a
chemical toxic barrier the plant
surface & pathogen
(1). Chemical treatment
(2). Chemical treatment of insect vectors
(3). Modification of environment
(4). Mixed cultivation
(5). Modification of host nutrition

6. (E). Disease Resistance :
• Preventing infection or reducing the effect of infection
by managing the host through genetic manipulation or
chemotherapy
(1). Selection & Hybridization
(2). Resistance through chemotherapy
(3). Resistance through host nutrition

7. (F). Therapy :
• Reducing severity of disease in an infected individual
(1). Chemotherapy
(2). Heat Therapy
(3). Tree surgery

8. Thank You