PESTS OF FIELD PESTS OF FIELD CROPSCROPS

1) corn1) corn

2) tobacco2) tobacco

3) sugarcane3) sugarcane

CORNCORN

Ostrinia furnacalis Ostrinia furnacalis (CORN)(CORN)

Lepidoptera: PyralidaeLepidoptera: Pyralidae stemborerstemborer

Damage: LarvaDamage: Larva start by chewing holes in the leaves (best time to start by chewing holes in the leaves (best time to

control)control) Then go into stem or stalk (drill hole) (difficult to Then go into stem or stalk (drill hole) (difficult to

control)control) Leaf with holes(outside), cut nutrient flow (once Leaf with holes(outside), cut nutrient flow (once

inside), stem weakening, collapse, the corn bud inside), stem weakening, collapse, the corn bud undevelopundevelop

Control: Control: 1) Intercropping: (sweet potatoe & legumes)1) Intercropping: (sweet potatoe & legumes) 2) Light trap, catch adults2) Light trap, catch adults 3) crop rotation3) crop rotation 4) plant flowering plant: attract parasitoid wasps: 4) plant flowering plant: attract parasitoid wasps: TrichogrammaTrichogramma spp. (parasitize eggs) spp. (parasitize eggs)

5) insecticide: dibrom and gusathion 5) insecticide: dibrom and gusathion

TOBACCOTOBACCO

Helicoverpa armigera Helicoverpa armigera (TOBACCO)(TOBACCO)

Lepidotera: NoctuidaeLepidotera: Noctuidae Ulat kuntum (budworm)/damage: Ulat kuntum (budworm)/damage:

larvalarva Leaf eater, preferable young shootsLeaf eater, preferable young shoots Control: use BtControl: use Bt

Spodoptera lituraSpodoptera litura

Lepidoptera:NoctuidaeLepidoptera:Noctuidae Ulas ratus/armyworm ,damage: larvaUlas ratus/armyworm ,damage: larva

voracious feeders eating large voracious feeders eating large pieces out of the leaves pieces out of the leaves

nocturnal feeders Control: during nocturnal feeders Control: during outbreak, insecticide application at outbreak, insecticide application at dusk (senja).  dusk (senja). 

InsecticidesInsecticides 1) Dipterex1) Dipterex 2) Dibrom2) Dibrom

SUGARCANESUGARCANE

Saccharicoccus sacchariSaccharicoccus sacchari Homoptera:PesuducoccidaeHomoptera:Pesuducoccidae Koya tebu/pink sugarcane mealybugKoya tebu/pink sugarcane mealybug Adult & nymph sucking the sap of Adult & nymph sucking the sap of

sugarcanesugarcane Vector for virus: Surgarcane Vector for virus: Surgarcane

Bacilliform Virus Bacilliform Virus Insufficient chlorophyll, leaves turn Insufficient chlorophyll, leaves turn

yellowish or pale whiteyellowish or pale white Control: destroy the infected sheathControl: destroy the infected sheath If serius, spray 0.03% a.i. If serius, spray 0.03% a.i.

Monocrotophos, Dimethoate, Monocrotophos, Dimethoate,

Chilo sacchariphagusChilo sacchariphagus

Lepidoptera:PyralidaeLepidoptera:Pyralidae stemborerstemborer Larva drills the stem Larva drills the stem Control: endosulfan 0.1 %Control: endosulfan 0.1 %