1. 1) corn 2) tobacco 3) sugarcane
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
Ulat kuntum (budworm)/damage: larva
Leaf eater, preferable young shoots
Control: use Bt

7. Spodoptera litura Lepidoptera:Noctuidae
Ulas ratus/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. Saccharicoccus sacchari
Homoptera:Pesuducoccidae
Koya tebu/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 %