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