Biopesticides are naturally occurring substances derived from animals or plants that can control pests without being toxic. They are biodegradable, non-persistent, non-toxic, and cost-effective alternatives to chemical pesticides. There are several types of biopesticides including microbial pesticides, plant-incorporated protectants, biochemical pesticides, and botanical pesticides. Common examples used are Bacillus thuringiensis bacteria to control caterpillars and fungi to control insects like whiteflies. Overall, biopesticides provide a safer and more sustainable approach to pest control compared to chemical pesticides.

1. Presented by- Arpit Tiwari

2.  Biopesticides are plant or animal materials that have
been found useful in controlling several harmful pests.
 They are biochemical pesticides that are naturally
occurring substances that control pests by non toxic
mechanisms.
 The are superior over chemical pesticides as they are
BIODEGRADABLE, NON-PERSISENT, NON TOXIC AND
COST EFFECTIVE, making them desirable and
sustainable tools for disease management
 Biopesticides effect only target pests and closely related
organisms.
 The are effective in small amounts and often
decompose quickly .

3.  MICROBIAL PESTICIDES
 PLANT INCORPORATED
PROTECTANTS(PIPs)
 BIOCHEMICAL PESTICIDES
 BOTANICAL PESTICIDES
 BIOTIC AGENTS( parasitoids and
predators)

4.  Microbial pesticides are composed of microscopic
living organisms (viruses, bacteria, fungi,
protozoa or nematodes) or toxins produced by
these organisms
 Applied as conventional insecticidal sprays, dusts,
or granules.
 Their greatest strength is their specificity as most
are essentially non toxic and non pathogenic to
animals and humans.
 Microbial pesticides includes insecticides,
fungicides, herbicides and growth regulators of
microbial growth.

5. . Bacillus thuringiensis
• Discovered in Japan in early 20th century and first become a
commercial product in France in 1938.
• Controls lepidopterous pests like
American bollworm in cotton
and stem borers in rice.
Fig: Bacillus thuringiensis
• When ingested by pest larvae, Bt releases toxins which damage the
mid gut of the pest, eventually killing it.
• Main sources for the production of Bt preparations are the strains of
the subspecies kurstaki, galeriae and dendrolimus

6. • Plant incorporated protectants are plants that have had
genes inserted causing the plants to produce a pesticide
inside its own tissues.
• Gene inserted in the genetic material of the plant
regulates the process.
• Manufacture of the pesticidal protein within the plant
takes place.
• As the pests feed on these plants they eventually die.
• Such plants are regulated by Environmental Protection
Agency (EPA).

7.  Fungi are a diverse group with close ties to
agriculture.
 These are used successfully to protect crops from a
variety of pests.
 Most fungi that are used to control the insect pest
belong to the group Hyphomycetes.
 Special fungal strains in commercial products target
whiteflies, aphids, weevils, ants etc.
 It is easy to produce mass spores of fungi of
hyphomycetes group.

8. Biological Pest Control
 It is contrary to the convectional farming practices which often
kill both useful and harmful life forms indiscriminately.
 Biological methods of pest control maintain a balance and does
not completely destroy the population of any species.
 Example:
 Ladybirds and dragonflies are useful to get rid of aphids and
mosquitoes.
 Microbial biocontrol agents that can be introduced in order to
control butterfly caterpillars is the bacteria Bacillus
thuringenesis .
 Trichoderma species are free living fungi that are very common
in root ecosystem and they prevent the growth of several
pathogens.
 Baculoviruses are used as biological agents against insects and
pests that infect plants.

9. • Biopesticides are typically microbial biological pest control that are
applied in a manner similar to chemical pesticides.
• Available in different formulations
• Also used to control soil borne and seed borne fungal pathogens
• Disadvantages of them are, high specificity, slow speed of action and
their requirement of suitable condition for their survival.
• Eventhough, biopesticides are best for controlling the pests of
agriculture then the chemicals
• Therefore there should be more works on production on biopesticides
and encourage people to use biopesticides to control the pests.