hi here i want to share some important pests that is involevd in papaya...i hope u all will love this presenation and you can gain more ifo here with colourful pictures...enjoy it

1. PEST OF PAPAYA
Diviner

2. • Crop: Papaya
• Scientific Name: Carica papaya
• Family: Caricaceae

3. PESTS OF PAPAYA
• White fly (Bemisia tabaci )
• Papaya Fruit Fly (Toxotrypana curvicauda)
• Oriental Fruit fly (Bactrocera (Dacus) dorsalis)
• Ash weevils( Myllocerus spp)
• Green peach aphid( Myzus persicae)
• Two-Spotted Mite (Tetranychus urticae)
• Papaya Webworm (Homolapalpia dalera)
• Thrips (Thrips parvispinus)

4. 1)White fly: Bemisia tabaci
Symptoms of damage:
• Nymphs and adults suck the sap from
undersurface of the leaves
• Yellowing of leaves.
Identification of pest
• Egg - pear shaped, light yellowish
• Nymph - Oval, scale-like, greenish white
• Settle down on a succulent part of leaves.
• Adult - White, tiny, scale-like adults.

5. Management
• Field sanitation
• Removal of host plants
• Installation of yellow sticky traps
• Spray application of imidacloprid 200SL at 0.01% or
triazophos 40EC at 0.06% during heavy infestation.
• Spray neem oil 3% or NSKE 5%
• Release of predators viz., Coccinellid
predator, Cryptolaemus montrouzieri
• Release of
parasitoids viz., Encarsiahaitierrsis and E.guadeloupae

6. 2)Fruit Fly (Toxotrypana curvicauda)

7. Fruit Fly (Toxotrypana curvicauda)
• Lays eggs through the papaya fruit peel into
the fruit cavity where the larvae feed.
Eventually emerge from the ruined fruit.
Symptoms: may show yellow areas and drop
from the tree prematurely.
Control:
• place a paper bag over individual fruit when
they are small.
• leave the bag on until harvesting.

8. 3)Oriental Fruit fly
(Bactrocera (Dacus) dorsalis)
Symptoms of damage
• Maggots puncture into semi-ripe fruits with decayed
spots
• Oozing of fluid and brownish rotten patches on fruits.
• Dropping of fruits.
Identification of pest
• Egg - pear shaped, light yellowish
• Nymph - Oval, scale-like, greenish white
• Settle down on a succulent part of leaves.
• Adult - White, tiny, scale-like adults.

9. Oriental Fruit fly
(Bactrocera (Dacus) dorsalis)

10. Management
• Collect fallen infested fruits and dispose them by
dumping in a pit and covering with soil.
• Provide summer ploughing to expose the pupa
• Monitor the activity of flies with methyl eugenol
sex lure traps.
• Heavy application of dust and sprays of pyrethrum or
BHC( benzene hexachloride)
• Spray fenthion 100 EC 2 ml/ lit or malathion 50 EC
2ml/lit.
• Field release of natural enemies
Opius compensates and Spalangia philippines

11. 4)Ash weevil

12. Ash weevils( Myllocerus spp)
Symptoms of damage
• Grub feed on the roots
• Wilting of young saplings
• notching of leaf margin by adults
Identification of pest
• Grub – small, apodous
• Adult – greenish white with dark lines on elytra
Management
• Collect and destroy the adults
• Spray carbaryl 50 WP at 2g/lit

13. 5)Green peach aphid( Myzus persicae)

14. Symptoms of damage
• Nymphs and adults suck the sap from leaves, petioles and
fruits
• Leaf curling and falling
• Premature fruit drop
Identification of pest
• Adult: Dark brown to chocolate brown colour
Management
• Remove and destroy damaged plant parts
• Spray dimethoate 0.03% or methyl demeton 0.025%
• Field release of parasitoid Aphelinus mali and
predators,Coccinella septumpunctata

15. 6)Papaya Webworm
(Homolapalpia dalera)
• It is also known as fruit cluster worm
• It develops under a web between and around
fruits and along stems of plants. Usually found
in or on or near the stem amongst the flower
and fruit.
• The webworm causes injury to fruit and stem,
providing an entrance for the fungus disease,
anthracnose. It is the main pest of the
developing fruit peel and papaya stem.

16. Control:
• hand removal (manually)
• hosing off the plant with a strong jet of water
• use of malathion or Bacillus thuringiensis for
other insects may reduce or aid in the control of
webworms.

17. 7)Two-Spotted Mite
(Tetranychus urticae)

18. Major pest of papaya leaves and causes defoliation
and early leaf drop.
Symptoms:
• browning of the leaf surface, eventually upper leaf
surface
• skeletonizing of the leaf
Control:
• Treatment with sulphur or kelthane (0.1%), (controls
the mites population)
• spraying with diluted manipueira (a liquid extract
from cassava root) in water 1:3, 3 times weekly
intervals gave 100% control.

19. 8)Thrips (Thrips parvispinus)

20. Symptoms:
• the insect attack shoot, young leaves and
flower bud
• causes spots and abnormal fruits size
Control:
• spray with dimethoate (0.1% a.i) or malathion
0.1% a.i

21. THANK YOU