Woody Ornamentals Insect and Mite Update 2003-2004

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Notice 504

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Woody Ornamentals Insect and Mite Update – 2003-2004 David J. Shetlar, Ph.D. The "BugDoc" The Ohio State University, OARDC & OSU Extension Columbus, OH © February, 2004, D.J. Shetlar, all rights saved

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Bulletin 504 – reconsidered in February, 2003 (2005 - next) Available at: http://ohioline.osu.edu

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Come visit the BugDoc at: http://bugs.osu.edu

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Major Insect and Mite Groups Can slaughter plants – basic bugs: borers!, a few scales, a few defoliators. Can deform plants – significant irritations: leafhoppers, defoliators, leafminers, a few bugs. Transitory harm – fundamentally aggravations: aphids, bind bugs, most delicate scales, most caterpillars, bugs, and so on

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Borers Continue – Agrilis species Bronze birch borer

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Borers Continued – Agrilis species Twolined chestnut borer Honeylocust borer

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Bark Beetles (Scolytidae) (likewise called etcher or ambrosia creepy crawlies) Cedar bark scarab grown-up. Cedar bark creepy crawly hatchlings. Pine Ips creepy crawly and rise gap. These scarabs are some of the time called shothole creepy crawlies.

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Borers Continue – White Pine Weevil – white pine & SPRUCE

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Clearwing Borers (Sesiidae) This gathering is normally recorded as the Aegeriidae Lesser peachtree borer grown-up. Fiery debris/lilac borer hatchling in lilac branch. Maple callus borer grown-up. Peachtree borer hatchling in sand plum.

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Traditional Dursban Lindane DiSyston (disulfoton) Cygon (dimethoate) Bidrin infusion Orthene infusion (Professional just) Alternatives Tempo, Talstar (Onyx), Deltagard, Scimitar, Astro Merit infusion (creepy crawlies just!) Flagship? (nursery) ??? Borer Insecticides X ??

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Borer Control Approaches Cultural – Use plants that are not inclined to borer assault! Plant medicinal services – plants in great developing conditions can for the most part repulse borer attacks. Keep away from Plant Damage – harmed plants are prone to assault. Natural – Usually not powerful in light of the fact that they assault after pervasion.

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Scales (defensively covered) – Oystershell Scale Oystershell scale assaults an assortment of deciduous trees. The crawlers develop about the time that dark beetle trees are in full blossom. This scale frequently murders littler trees and branches if not controlled!

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Pine needle scale females. Note pinkish eggs at end of scale test (shell) and a settled crawler at upper left. Gathering of pine needle scale settled crawlers (tan) and a few new crawlers (pinkish) in shading.

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Traditional Diazinon Dursban Sevin Orthene (Professional just) Malathion Cygon DiSyston (disulfoton) Alternatives Tempo, Talstar, Deltagard, Scimitar, Astro Merit (delicate scales) Flagship (nursery) Soaps & Oils Scale Control (crawlers) X ??

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Caterpillars – The Gypsy Moth

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Bagworm hatchling stretching out from sack. Bagworms on spruce. Male bagworm grown-up. Female bagworms stay taken care of as a pupa that contains the prepared eggs.

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Traditional Dursban Sevin Orthene (Professional just) Malathion Alternatives Tempo, Talstar, Deltagard, Scimitar, Astro Conserve Merit (???) Flagship? (nursery) Bt Soaps or Oils Caterpillar Insecticides X

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Typical leaf dotting from rose leafhoppers. Rose leafhopper fairy. Rose leafhopper grown-up.

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Elm cockscomb nerves are a kind of bladder or tote annoy delivered by an aphid. The Cooley spruce irk adelgid delivers a pinecone molded annoy that is shaped by swollen bases of needles. The youthful rankle is on the left and the opened irk is on the privilege.

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Galls – Bladder & shaft nerves (eriophyid vermin)

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Oaks have more than 300 various types of nerves! This is a little specimen – oak apple nerves (upper left), oak slug nerves (above) and oak spangle nerves (left). These are delivered by annoy wasps.

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Scales – Lecanium (a few) & Calico scales, develop females. Delicate scale fairies more often than not settle on the undersurface of leaves for the initial two instars. They can be controlled here!

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Tent caterpillars taking after web trail. Eastern tent caterpillar settle in roadside cherry tree. Develop hatchling and cover. Egg mass.

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Fall webworm grown-up male. Early fall webworm settle. Purpleleaf plum with many fall webworm settles in September.

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Honeylocust arachnid vermin occupy leaf undersurfaces. Oak parasites occupy the upper leaf surface. European red vermin grouping to inflatable to new plants. European red vermin overwintering eggs

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Cool-Season Pests – Spruce Spider Mite – inert the greater part of summer!

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Hemlock rust vermin are minute eriophyids that cause the foliage to seem yellowish or rust shaded.

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Traditional Kelthane Morestan Cygon Orthene ? (Proficient just) Alternatives Avid Hexygon (eggs & hatchlings just, bug bugs just) Floramite (insect bugs just) Sanmite (creepy crawly parasites just) Conserve Pyrethroids?? Cleansers or Oils Miticides X ??

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Azalea bind bug harm. Note obvious leaf spotting. Commonplace trim bug grown-up. Note tar spots.

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Lace Bug Control with imidacloprid (Merit): Some Issues Imidacloprid foliar showers and soil douses – work awesome, can give season long trim bug control! Insect bugs, particularly twospotted, appear to pizazz up after imidacloprid applications. Gives the idea that predators of creepy crawly bugs likewise "test" have plants and are murdered by the imidacloprid!

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Pine tortoise scale develop females on stem. Pine needle scale second instar fairies and male "pupae" on needles.

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Mimosa webworm settle in honeylocust. Mimosa webworm grown-up.

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Black Vine Weevil Management What's Lost? Ficam (Turcam) Orthene is proficient as it were! What are the Alternatives? Justify! (mortgage holder item accessible, apply to soil, NOT mulch, not for grown-ups!) Pyrethroids for Adults DiSyston (disulfoton) (property holder items accessible, BVW not named on name, apply to soil!)

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Emerald Ash Borer Discovered in Detroit zone, now in more than 1000 square miles in southeastern Michigan. Pervasions found in Toledo range, far northwestern Ohio, and in Columbus territory in November! Look for declining cinder trees – tops ceasing to exist descending. In the event that D-formed openings are available, then emerald fiery remains borer is likely the main source! Bigger, round or oval openings are from other local borers.

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Periodical Cicada – Brood X This expansive brood will develop in May and grown-ups will persevere through June.