1. The document introduces the bean pod borer, Maruca vitrata, a major pest of beans and cowpeas. The larvae feed on buds, flowers, and pods, eating the developing seeds and causing 20-80% crop losses. 2. Bean pod borer moths are nocturnal and shelter in plant canopies during the day. They lay eggs on flowers, and young larvae feed inside flowers before moving to pods. 3. After 10-15 days, larvae exit pods and pupate in soil. Damage includes eaten seeds within pods and entry holes that allow water staining. Control methods include crop rotation, sex pheromones, and biological suppression.

1. Welcome To my Presentation
Name: Md. Abdul Hannan
ID:12309078

2. Topic Name
Pod Borer/Bean Pod Borer

3. Common Name: Pod borer /Bean pod borer
Scientific Name: Maruca vitrata
Family : Crambidae
Order : Lepidoptera
Species: M. vitrata
Economic importan: It is the major pest of Bean and
also cowpea . It can cause losses of 20-80% on the
harvests of cowpeas. The larvae feed on the buds
and flowers and bore into the pod to eat the
developing seeds. Bean pod borer moths are active
at night but shelter within the plant canopy during the
day. Crops are invaded at the beginning of flowering.
The flowers and pods are bound together by frass-
covered web produced by the larva.

4. Similar species
• Moths may be confused with those of the
beet webworm (Spoladea recurvalis) but are
slightly larger, and have predominantly pale
hindwings, as opposed to the predominantly
brown hindwings of S. recurvalis.

5. Life cycle:
Crops may be infested from early budding onwards. The
eggs are laid on or in the flowers (inserted between the
petals). Young larvae feed inside flowers for 5-7 days
before moving to the pods when mid-sized. Favoured
entry points are where flowers and pods are touching.

6. Con,t
• After completing their development (10-15
days from egg hatch), larvae exit pods and
pupate in the soil. Occasionally the larvae
indulge in vegetative feeding and have been
observed tunnelling in the stems and feeding
inside the rolled and webbed leaves of
luxuriantly growing (moisture-stress-free)
peanuts. Larvae can reach 18 mm in length.
Bean pod borer moths have a 20-25 mm
wingspan and a slender body.

8. Damage
• Seeds within damaged pods are totally or
partially eaten out by bean pod borer larvae.
Entry holes also let in water, which stains the
remaining non-eaten seeds. In peanuts, bean
pod borer larvae may web young leaves
together and may tunnel in plant stems. Such
damage is not typical of its behaviour on other
legumes.

9. Control:
1. Crop rotation
2. Sex pheromone
3. Biological suppression

10. Thanks To All