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Rice insect pests - GM
- 1. 1 AGB 22012: Crop pests and Management
- 2. 2 Insect pest of Rice a) Stem borers 1. Yellow stem borer, Scirpophaga incertula 2. Gall fly or Gall midge, Orseolia oryzae GM
- 3. 3 Insect pest of Rice b) Leaf feeders 1.Whorl maggot, Hydrellia sasakii 2. Swarming caterpillar, Spodoptera mauritia 3. Case worm, Nymphula depunctalis 4. Leaf folder, Cnaphalocrosis medinalis Marasmia patnalis 5. Skipper butterfly, Pelopides mathias GM
- 4. 4 Insect pest of Rice b) Leaf feeders … 6. Green horned caterpillar, Melanitis leda ismene 7. Hispa or spiny beetle, Dicladispa armigera 8. Grass hopper, Oxya nitidula Hieroglyphus banyan GM
- 5. 5 Insect pest of Rice c) Sap feeders 1. Thrips, Stencheatothrips biformis 2. Green leafhopper, Nephotettix nigropictus N. cincticeps , N. impicticeps 3. White leaf hopper, Cofana spectra 4. Zig zag leaf hopper, Recilia dorsalis 5. Brown plant hopper, Nilaparvata lugens 6. Ear head bug, Leptocorisa acuta GM
- 6. 6 Yellow stem borer Scirpophaga incertula Lepidoptera : Pyralidae White ear Dead heart GM
- 7. 7 Yellow stem borer Scirpophaga incertulas Lepidoptera : Pyralidae White ear Dead heart GM
- 8. 8 Scirpophaga incertula Excreta indicate the holes Stem hole with larva Stem with larva and excreta GM
- 10. 10 Fecundity: •15-80 eggs/Adult - in mass near tip on upper surface of tender leaf blade during night and cover them with buff coloured hairs and scales – derived from anal tuft. • 2-3 egg masses /female • Incubation period : 5 – 8 days GM
- 11. 11 • One larva bores into the stem near nodal region • Usually 1 larva/stem, but 2-4 larvae/stem also reported • Larva – Migratory • come out of stem and prepare an enclosing case • infest new plant GM • Pale white with dark brown head and prothoracic shield • Enter leaf sheath and feed for 2-3 days Larva:
- 12. 12 Larva.. Cont.. • Larval period – 33 - 41 days • length – 20 mm • Before pupation, larva plug the exit hole GM Pupa: in silken cocoon • Dark brown • 12 mm long • Pupal period - 6-10 days (may get prolonged depending upon the weather condition)
- 13. 13 Moth • Attracted to light • Female:male – 2:1 • Cold weather • high humidity & • low temperature
- 14. 14 Natural enemies Egg Parasitoids • Tetrastichus sp. • Telenomus beneficians • Trichogramma sp. Larval parasites Amauromorpha accepta Isotima javensis
- 15. 15 Hollow cavity in the rice stem Symptoms of Rice gall midge Orseolia oryzae Diptera : Cecidomyiidae Silver shoots of gall midge larvae. GM Onion Leaf
- 17. 17 pupa Rice Whorl Maggot Hydrellia sesakii Diptera : Ephyridae egg Adult Maggot GM
- 18. 18 Symptoms of Rice Whorl Maggot Hydrellia sesakii Diptera : Ephyridae Yellow spots and streaks on leaves GM
- 19. 19 egg larva Rice case worm Nymphula depunctalis Lepidoptera : Pyralidae adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 20. 20 Damage field leaves dry up and turn white Floating larval case Leaf blades are cut as by scissors Larval head come out from case Rice case worm Nymphula depunctalis Lepidoptera : Pyralidae GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 21. 21 adult Spineless adult pupa grub Rice Hispa beetle Dicladispa armigera Coleoptera : Chrysomelidae GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 22. 22 Damage of Rice Hispa beetle Dicladispa armigera Coleoptera : Chrysomelidae Leaf mining GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 23. 23 Swarming caterpillar/ Army worm Spodoptera mauritia Lepidoptera : Noctuidae Adults feeding on the plants Remove the leaf blades GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 24. 24 Swarming caterpillar/ Army worm Spodoptera mauritia Lepidoptera : Noctuidae Egg masses covered with hairs Larva hatching from the egg masses Larva GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 25. 25 Pupate on the plant/ into the soil Adult Swarming caterpillar/ Army worm Spodoptera mauritia Lepidoptera : Noctuidae GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 26. 26 Ear cutting caterpillar (Army worm) Mythimna separata Lepidoptera : Noctuidae Plant damage Egg mass Egg mass folded in leaf GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 27. 27 Ear cutting caterpillar (Army worm) Mythimna separata Lepidoptera : Noctuidae Larva pupa Adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 28. 28 Cut worm Spodoptera litura Lepidoptera : Noctuidae Larva Adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 29. 29 Damage Leaf folder Lepidoptera : Pyralidae Folded leaves GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 30. 30 Leaf folder Cnaphalocrocis medinalis Lepidoptera : Pyralidae Eggs Larva pupa adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 31. 31 Leaf folder Marasmia patnalis Lepidoptera : Pyralidae Adult Larva GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 32. 32 Thrips Stenchaetothrips biformis Thysanoptera : Thripidae Damage Larva Mature larva Adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 33. 33 Green horned caterpillar Melanitis leda ismene Lepidoptera : Satyridae Adult Egg Larva pupa Damage GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 34. 34 Green horned caterpillar Mycalesis sp. Lepidoptera : Satyridae Adult Larvae pupa GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 35. 35 Skipper butterfly Pelopidas mathias Lepidoptera : Hesperiidae adult egg larva pupa Leaf tip folded symptom GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 36. 36 Hairy caterpillar Creatonotus gangis Lepidoptera : Arctiidae Larva pupa Adult Egg mass GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 37. 37 Oxya Acrida Atractomorpha Rice Grasshopper Orthoptera : Acrididae Egg covered with frothy secretions GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 38. 38 Green leaf hoppers Nephotettix virescens Hemiptera : Cicadellidae Nymph Adult eggs GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 39. 39 Green leaf hoppers Nephotettix nigropictus Hemiptera : Cicadellidae Nymph Adult AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 40. 40 Adult Nymph Nephotettix malayanus Nephotettix cincticeps Adult Nymph AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 41. 41 Zig zag hoppers Recilia dorsalis Hemiptera : Cicadellidae Adult Nymph AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 42. 42 White leaf hopper Cofana spectra Hemiptera : Cicadellidae Egg Adult Nymph GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 43. 43 Brown Plant hopper Nilaparvata lugens Hemiptera : Delphacidae Adult Egg Nymph Hopper burn Hopper burn GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 44. 44 White backed Plant hopper Sogatella furcifera Hemiptera : Delphacidae Male Female Egg Nymph Hopper burn GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 45. 45 Rice ear head bug Leptocorisa acuta Hemiptera : Alydidae Adult Nymph egg GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 46. 46 Damage grain Rice ear head bug Leptocorisa acuta Hemiptera : Coreidae GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 47. 47 Sting bug Nezara viridula Hemiptera : Pentatomidae eggs Nymph Adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 48. 48 Sting bug Dolicorus indicus Hemiptera : Pentatomidae Adult Eggs & Nymphs GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 49. 49 Root aphid Rhopalosiphum rufiabdominalis Hemiptera : Aphididae Yellowing adult Nymphs GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 50. 50 Mole cricket Gryllotalpa orientalis Orthoptera : Gryllotalpidae Damage Adult GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 51. 51 White grub Holotrichia sp. Coleoptera :Scarabaeidae Damage Grub pupa adult AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 52. 52 Black beetle Phyllophaga sp. Coleoptera :Scarabaeidae AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 53. 53 Termite Macrotermes gilvus Isoptera : Termitidae Adult Damage AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 54. 54 Ants Solenopsis geminata Hymenoptera : Formicidae Adult Reduce seed germination GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan
- 55. 55 End of Part 1:Insect pests GM AGB 3201 :Plant Protection and Epidemiology – Rice ecosystem-Insect pests Dr.G.Mikunthan Acknowledgement: 1. International Rice Research Institute, Philippines 2. Department of Agriculture, Ministry of Agriculture, Sri Lanka