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PESTS OF FIELD CROPS

PESTS OF FIELD CROPS. 1) corn 2) tobacco 3) sugarcane. CORN. Ostrinia furnacalis (CORN). Lepidoptera: Pyralidae stemborer. Damage: Larva start by chewing holes in the leaves (best time to control) Then go into stem or stalk (drill hole) (difficult to control)

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PESTS OF FIELD CROPS

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  1. PESTS OF FIELD CROPS 1) corn 2) tobacco 3) sugarcane

  2. CORN

  3. Ostrinia furnacalis (CORN) • Lepidoptera: Pyralidae • stemborer

  4. Damage: Larva • start by chewing holes in the leaves (best time to control) • Then go into stem or stalk (drill hole) (difficult to control) • Leaf with holes(outside), cut nutrient flow (once inside), stem weakening, collapse, the corn bud undevelop • Control: • 1) Intercropping: (sweet potatoe & legumes) • 2) Light trap, catch adults • 3) crop rotation • 4) plant flowering plant: attract parasitoid wasps: Trichogramma spp. (parasitize eggs) • 5) insecticide: dibrom and gusathion

  5. TOBACCO

  6. Helicoverpa armigera (TOBACCO) • Lepidotera: Noctuidae • Ulatkuntum (budworm)/damage: larva • Leaf eater, preferable young shoots • Control: use Bt

  7. Spodoptera litura • Lepidoptera:Noctuidae • Ulasratus/armyworm ,damage: larva

  8. voracious feeders eating large pieces out of the leaves • nocturnal feeders Control: during outbreak, insecticide application at dusk (senja).  • Insecticides • 1) Dipterex • 2) Dibrom

  9. SUGARCANE

  10. Saccharicoccussacchari • Homoptera:Pesuducoccidae • Koyatebu/pink sugarcane mealybug • Adult & nymph sucking the sap of sugarcane • Vector for virus: Surgarcane Bacilliform Virus • Insufficient chlorophyll, leaves turn yellowish or pale white • Control: destroy the infected sheath • If serius, spray 0.03% a.i. Monocrotophos, Dimethoate,

  11. Chilo sacchariphagus • Lepidoptera:Pyralidae • stemborer • Larva drills the stem • Control: endosulfan 0.1 %

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