PPATH-121 PRODUCTION TECHNOLOGY OF BIOAGENTS

---

Objectives

To study principle sand application of eco friendly and sustainable management
strategies of plant diseases.

Practical

Concept of biological control, definitions, importance, principles of plant disease management with
bioagents, history of biological control, merit sand demerits of biological control. Types of
biological interactions, competition: mycoparasitism, exploitation for hypovirulence, rhizosphere
colonization, competitive saprophytic ability, antibiosis, induced resistance,
mycorrhizal
associations, operational mechanism sand it relevance in biological control. Factors governing
biological control, role of physical environment, agro ecosystem, operational mechanisms and
cultural practices in biological control of pathogens, pathogens and antagonists and their
relationship, bio control agents, comparative approaches to biological control of plant pathogens by
resident and introduced antagonists, control of soil-borne and foliar diseases. Compatibility of
bioagents with agrochemicals and other antagonistic microbes. Commercial production of
antagonists, their delivery systems, application and monitoring, biological control in IDM, IPM and
organic farming system, biopesticides available in market. Quality control system of biocontrol
agents. Isolation, characterization and maintenance of antagonists, methods of study of antagonism
and antibiosis, application of antagonists against pathogen in vitro and in vivo conditions.
Preparation of different formulations of selected bioagents and their mass production. Quality
parameters of biocontrol agents. One week exposure visit to commercial bio control agents
production unit.

---

Lecture Schedule: Practical

1. Concept of definitions, importance of biological control 1
2. Principles of plant disease management with bioagents, history of biological control, merits and demerits of biological control. 2
3. Types of biological interactions, competition: mycoparasitism, exploitation for hypovirulence, rhizosphere colonization 1
4. Competitive saprophytic ability and antibiosis 2
5. Induced resistance and mycorrhizal associations 1
6. Operational mechanisms and it srelevance in biological control. 2
7. Factors governing biological control, role of physical environment, agro ecosystem, Perational mechanisms and cultural practices in biological control of pathogens 2
8. Pathogens and antagonists and their relationship, biocontrol agents, comparative approaches to biological control of plant pathogens by resident and introduced antagonists 2
9. Control of soil-borne and foliar diseases. 2
10. Compatibility of bioagents with agro chemicals and other antagonistic microbes 2
11. Commercial production of antagonists, their delivery systems, application and monitoring, biological control in IDM, 2
12. IPM and organic farming 1
13. Biopesticides available in market. 2
14. System Quality control system of biocontrol agents. 2
15. Isolation, characterization and maintenance of antagonists 2
16. Methods of study of antagonism and antibiosis 1
17. Application of antagonists against pathogen in vitro and in vivo conditions. 2
18. Preparation of different formulations of selected bioagents and their mass production. 1
19. Quality parameters of biocontrol agents. 1
20. One week exposure visit to commercial biocontrol agents production unit 1

---

Suggested Readings:

• CampbellR. 1989. Biological Control of Microbial Plant Pathogens. Cambridge Univ.
• Press, Cambridge.
• Cook RJ & Baker KF. 1983. Nature and Practice of Biological Control of Plant Pathogens.
• APS, St. Paul, Minnesota.
• FokkemmaMJ.1986.MicrobiologyofthePhyllosphere.CambridgeUniv.
• Press,
• Cambridge.GnanamanickamSS(Eds).2002.BiologicalControlofCropDiseases.CRCPress,
• Florida.
• Heikki MT & Hokkanen James M (Eds.). 1996. Biological Control – Benefits and Risks.
• Cambridge Univ. Press, Cambridge.
• Mukerji KG, Tewari JP, Arora DK & Saxena G. 1992.Recent Developments in Biocontrol of Plant Diseases. Aditya Books, New Delhi.