Pest of papaya

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