Ornamentals Insect and Mite Update – 2002-03

1. Ornamentals Insect and Mite Update – 2002-03 David J. Shetlar, Ph.D. The “BugDoc” The Ohio State University, OARDC & OSU Extension Columbus, OH © October, 2002, D.J. Shetlar, all rights reserved

2. Ornamentals Insect and Mite Update – 2002-03 • Information resources • Pest activity review • Life after FQPA??!! Alternate insecticides Alternate miticides

3. http://ohioline.osu.edu

4. Check OSU FactSheets - quarterly

5. Bulletin 504 – to be revised by February, 2003

6. http://webgarden.osu.edu/

7. BYGL OnLine – weekly update of Ohio nursery, landscape and turf pests

8. The P.E.S.T. Newsletter available from: Ohio Nursery & Landscape Association 72 Dorchester Square Westerville, OH 43081 614-899-1195 800-825-5062

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

10. Insect and Mite Activity in 2002 • Still suffering from borers because of plant stresses – mainly drought (Agrilis borers, flatheaded appletree borer, bark beetles, white pine weevil) • Sucking pests – lace bugs, scales, spider mites • Caterpillar/sawfly complex changes • New Pests Detected – Asian emerald ash borer ?; viburnum leaf beetle in Ohio; Asian longhorn beetle ?

11. Emerald Ash Borer Photo: A. J. Storer Photo: D. Roberts

12. Viburnum Leaf Beetle Photos: Cornell University

13. Borers Continue – Agrilis species Bronze birch borer

14. Twolined chestnut borer Borers Continue – Agrilis species Honeylocust borer

15. Borers Continue – Flatheaded Appletree Borer

16. Borers Continue – Clearwing borers Rhododendron borer

17. Borers Continue – Bark Beetles – mainly conifers

18. Asian Ambrosia Beetle – “toothpicks” Photos: bugwood

19. Borers Continue – White Pine Weevil – white pine & SPRUCE

20. Traditional Dursban Lindane DiSyston (disulfoton) Cygon (dimethoate) Bidrin injection Orthene injection Alternatives Tempo, Talstar, Deltagard, Scimitar, Astro Merit injection (beetles only!) ??? ??? Borer Insecticides X X X ?? X

21. Borer Control Approaches Cultural – Use plants that are not prone to borer attack! Plant health care – plants in good growing conditions can usually repel borer attacks. Avoid Plant Damage – damaged plants are prone to attack. Biological – Usually not effective because they attack after infestation.

22. Caterpillars – The Gypsy Moth

23. Caterpillars – Fall Webworm, Mimosa Webworm, Bagworm

24. Traditional Dursban Sevin Orthene Malathion Alternatives Tempo, Talstar, Deltagard, Scimitar, Astro Conserve Bt Soaps or Oils Caterpillar Insecticides X ? X

25. Cool-Season Pests – Spruce Spider Mite – inactive most of summer!

26. Traditional Kelthane Morestan Cygon Orthene ? Alternatives Avid Hexygon (eggs & larvae only, spider mites only) Floramite (spider mites only) Sanmite (spider mites only) Conserve Pyrethroids?? Soaps or Oils Miticides X X ??

27. Pine tortoise scale mature females on stem. Pine needle scale second instar nymphs and male “pupae” on needles.

28. Pine needle scale females. Note pinkish eggs at end of scale test (shell) and a settled crawler at upper left. Group of pine needle scale settled crawlers (tan) and a couple of fresh crawlers (pinkish) in color.

29. Traditional Diazinon Dursban Sevin Orthene Malathion Cygon DiSyston (disulfoton) Alternatives Tempo, Talstar, Deltagard, Scimitar, Astro Merit (soft scales) Meridian (Flagship)? Soaps & Oils Scale Control (crawlers) X X ? X ?? X

30. Black Vine Weevil Management What’s Lost? Ficam (Turcam) Orthene is on the way out! What are the Alternatives? Merit! (home owner product available, apply to soil, NOT mulch, not for adults!) Pyrethroids for Adults DiSyston (disulfoton) (home owner products available, BVW not named on label, apply to soil!)