Success and faliure of biopesticides/biocontrol agents

1. Success and faliure of
biopesticides/biocontrol agents
• Biological control.
• How do biopesticides work?
• Reasons of faliure
• How do we use biopesticides successfully?
• Advantages and disadvantages

2. Plant are exposed to a variety of pathogens

3. Plant diseases cause millions in lost revenue
anually

14. Reasons of faliure of biocontrol agents.
• Not conducting a quality assessment of purchased natural
enemies(selecting of poor natural enemies or species affected by
disease of parasite)
• Not releasing enough natural enemies.
• Releasing natural enemies too late.
• Applying pesticides that directly or indirectly affect natural enemies
• Climatic mismatching.
• Habitat or cultural conditions unfavourable for biological control
agent.
• Absence of alternative prey.

15. How do we use biocontrol agent sussessfully?
• Maximum benefits when used in IPM programme.
• Proper use is important
Know your crop, pathogen biology
Use of registered products
Consult with extension specialists, product technical support.
Check for compatibility
Apply according to label

19. Only 58 of the 157 species reported as providing successful control at field level

20. Advantages Of Biocontrol Agent
• Decrease disease intensity.
• Reduce the use of chemical fungicides.
• Reduce undesirable effects from chemical pesticide.
• User safety
• Natural long term immunity to crops and soil.
• Minimal impact on beneficial microorganisms.
• Disadvantage
• Slow effect
• Lack persistence and wide spectrum activity
• Rapidly degraded by UV lights.
• Production process is slow and costly.
• Poor water solubility .application issues
• Relability issues.
• Storage issues.