Corn pest complete

• 1. Corn Pest

2. Corn leaf aphidRhopalosiphum maidis 3. TaxonomyCommon name: Cornleaf aphidKingdom: AnimaliaPhylum: ArthropodaClass: InsectaOrder: HemipteraSuborder: SternorrhynchaSuperfamily: AphidoideaSubfamilies: EriosomatidaeGenus: RhopalosiphumScientific name: maidis 4. Description oval wingless adult is approx. 2 mm long Pale bluish-green with black antennae Legs, and cornicles and a dark area around thebase of the cornicles The head is marked with two longitudinal darkbands, and the abdomen with a row of blackspots on each side The body have a powdery coating. The wingedform is about the same size. Host plan usually cereal crop(maize,wheat,barley) 5. Symptom First it will colonize whorl leaves and immaturetassel. Will attack pollen shed and stunt the plant. Maize dwarf mosaic virus may spread mostly bygreen peach aphids. Can render the ears unmarketable. 6. ControlNature:lady beetleslacewingpirate bugs}not adequate controlInsecticide: such spinosad. 7. Corn root wormDiabrotica virgifera 8. Taxonomy Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Chrysomelidae Subfamily: Galerucinae Tribe: Luperini Genus: Diabrotica Species: virgifera 9. Description White and slender About 0.5 inch long when fully grown Brown heads Dark plate on the top side of their tails 10. Description Southern adult Yellow to green in color with a black stripealong the sides of their wing covers About 7.5 mm long. Male wing covers are often nearly entirelyblack or at least darker in pigmentation Female, which usually appears as more regularstripes. Slight variations in these color patterns mayoccur. Female adults have larger abdomens than themales. 11. Description Northern adult Tan to pale green beetle about 6 mm long. Newly emerged beetles are usually cream orlight brown in color, but gradually turn green withage. No marked differences in coloration existbetween sexes, but female beetles with theirlonger and larger abdomens are typically largerthan the males 12. Symptom Rootworm larvaechew the aerial rootsof maize stalks Penetrate the damageroot and gain accessto the inner stalk. Maize stalks prone totipping Damaged root servedas 2nd infection Severe root damageresult in lodging ofcorn plants 13. Control Early planting Crop rotation Insecticide Lorsban 15GInsecticide Lorsban AdvancedInsecticide Chlorpyrifos 14. ArmywormSpodoptera frugiperda 15. Taxonomy s Kingdom : Animalia Phylum : Arthropoda Class: Insecta Order : Lepidoptera Family : Noctuidae Genus : Spodoptera Species : frugiperda 16. Description Their name is from their behavior movingarmy-like fashion They migrate as an army to new host plant.. They feed primarily on grass such as oats,wheat, barley and forage grasses. But due to hunger stress, they can be a pestto other plants such maize, radish and sweetpotato. Have 4 stages of growth. 17. Egg Egg are usually round shaped 0.75 to 1 mm size in diameter Shiny and smooth on egg surface Flat on the lower surface Bluntly pointed at the top Have sculpturing, lines and ridges on the surface Lay about 100-300 of eggs Egg hatches in 1 to 2 weeks affect bytemperature Greenish-white in colour. 18. Larvae Pale green in colour Mature larvae basically yellowishor brownish-green with greenish-brown head mottled. Hairless body mark with threedark longitudinal stripes. Full grown are 30-35 mm long. Active at night feeding ontender leaf tissue. 19. Pupa Brown, reddish-brown or black 13 to 22 mm long The antennae, wing pads andlegs are firmly joined together. Abdomen free to twist aroundif disturbed. At the tip of abdomen have apairs of hook Live in the soil under debris. Stage duration is up from 7 to14 days in summer. 20. Adult Are light reddish brown mothswith wingspan measuring about 4 cm. The forewing is pointed with whitespot at the center. The hind wing are grayish andmore lighter. Adults are nocturnal. Active during the evening, feeding onnectar, mating and searching foroviposition side. Eggs are deposited in a row or clusterat the base of plants. 21. Symptom Consume leaf tissue ofmaize plant. Chewing the leaves, strip theentire plant, and leaving onlythe midribs of the plant. Move up the plant to feed onpanicles and flower. Larvae will feed on the flag leaves,kernels and stems. Also eat the center of the youngstalk and destroy the plants. 22. Ways of control Scouting procedure (identify hot spots)- the besttime to scout is at night or dawn. Insecticide technique based on the group size. Use BT (Bacillus thruingiensis)- a product thatcontain toxin that derived from bacterium. 23. CutwormsAgrotis ipsilon 24. Taxonomy Common name: Black cutworm Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Lepidoptera Family: Noctuidae Genus: Agrotis Species: Agrotis ipsilon 25. Descriptions Eggs Flattened on top White to dull or off-white in color Ribbed Eggs may be deposited on crop foliage Frequently found on weeds 26. Descriptions Larvae Fully grown larvae range from 1 to 1.75 inches inlength Commonly curl into a C-shape when disturbed 27. Descriptions Adult Pale brown forewings with dark brown, blackmarkings Translucent hindwings, greyish white with brownvenation hindwings have a thin dark line along themargins of the hindwings Approximately 1 inch long with a wing span of 1.25to 2 inches 28. Symtomps Attack seedlings Cut seedlings at the base1. Active eater at night2. Hide under debris on the soil surface during morning3. Climb into the host plant to feed 29. Control Spray of insecticide: Ambush Pounce Sevin 30. Japanese BeetlePopillia japonica 31. Taxonomy Common name: Japanese beetle Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Scarabaeidae Genus: Popillia Species: Japonica 32. Descriptions About 0.6 inch long 0.4 inch wide Iridescent copper-colored elytra Green thorax and head Clumsy flier, dropping several centimeters when ithits a wall 33. Symptoms Attack leaf and fruits Skeletonizing the foliage Consuming only the leaf material between theveins May feed on fruit on the plants if present. 34. Control Soil insecticide (short term control) Traps (large quantity) Soap water spray mixture} small amount pest Shaking a plant in morning 35. GrasshopperMelanoplus differentialis 36. Taxonomy Common name: Differential grasshopper Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Orthoptera Family: Acrididae Subfamily: Melanoplinae Genus: Melanoplus Species: differentialis 37. Description Adult males grow to 2837 mm Females grow to 3450 mm Brownish or greenish and as they age the colorwill darken Male has boot-like appendages at the end of itsabdominal tip Inverted chevrons along the hind femur Hind part the tibia is yellowish with black spikes Adults tarsi are yellow along with its antennae 38. Symptoms Kernels in the ear tips, plus along the side of theear were consumed or heavily scared Exposed eated kernels Complete kernel removal Clip silks (hot & dry conditions) 39. Control Sprays of insecticide Addition of canola oil to insecticide sprays Improve control by making treated foliage moreattractive Baits containing carbaryl (Sevin) can be used. It would be more effective when the baits aremixed with some insecticide and bran or someother carrier and kill the grasshoppers that feedon that bait.