Biopesticide

1. Biopesticide
ROHIT(M.SC BIOCHEMISTRY)
MDU ROHTAK

2. A biopesticide is a
biological substance or
organism that damages,
kills, or repels organisms
seen as pests.

3. Type of biopesticide
• 1 Microbial biopesticide
• 2.Plant-incorporated-protectants biopesticide
• 3 Biochemical biopesticide
• 4.Viral biopesticide
• 5.Fungal biopesticide

4. 1.Microbial pesticide
• Composed of microorganism like
viruses,fungi,bacteria,protozoa or nematode
• applied as convenctional spray
• Include insecticide,Herbicide,fungicide
• eg:-Bt ,Agrocin

5. Some importan microbial pesticide
• Bacillus thuringiensis
• Agrobacterium radiobactor
• Pseudomonas fluorescens
• Trichoderma
• Metarizium anisopliae
• Verticillum lecanii
• Nomuraea riley
• Baculoviruses

6. Mode of action

7. 2.Plant-incorporated-protectants
pesticide
Pesticidal substance produce from panlts
Importan botanical pesticide -Neem
oli.,Rotenone,Tobacco suspension

8. 3.Biochemical pesticides
• Naturally occurring substance that control
pests by non-toxix mechanism
• Eg Azadirachtin (broad spectrum inseticide)
• Capsaicin ( Compound from chili peppers-
Broad spectrum inseticide)
• Clove,Rosemary and peppermint oil(broad
spectrum fungicide)

9. Biochemical
pesticide
Nervous
system
impair
signal
transdu
ction
Respiratory
system blocking
spiracle leads to
suffocation
Neurotoxin
causing
paralysis and
death
Affect
DNA,RNA
and protein
synthesis
Neuroendoceine system juvenile
hormonal imbalance,decrease
fertility,fecundity,malformation
Cellular level
distrubing ion
pump,sognal
transduction
Mode of action

10. 4.Viral pesticide
• Virus used for pest control.
• Narrow spectrum
• Eg.Pox virus ,Tetraviruses,Polydnaviruses

11. Mechanism
1.Ingestion of occluded viruse by larvae
2.Dissolving of protein capsule in
midgut
3.Virions infect the larvae
4.Viruse replicate inside the host
5.Forming of new occluded viruses
6.Death of larvae and releasing of
occluded viruses

12. 5.Fungal pesticide
• Fungi specially associated with insects k/d
entomooathogenic fungi.
• Fungi attack the host via gut epithelium.
• Steptomycetes produce toxins.
• Most active toxins are actinomycin
A,cyclohexamide and novabiocin.
• Eg.Nomurea rileyi

13. Mode of action

14. Advantages
• Biopesticide are less toxic than conventional
pesticides.
• Target only pest and closely related sp.
• Effective in very small amount
• Cheap,renewable can be handle safely
• Difficult for insects to develop resistance to
these pesticide.

15. Disadvantage of using biopesticide
Not available easily.
Poor water solubility
Lack resistance and wide spectrum activity
Rapidly degraded by UV lights