1. Controlling Insect Pests in the Garden
Dr. Monica Valentovic
And
Dr. Gary Rankin

2. Control of Pests is a decision making process
Plant selection – Japanese beetles
Horticulture practices
Pesticide management

3. Horticultural practices to minimize disease
Planting
Plant at maximum distances for air flow
28- 30” HT
Prune
Prune centers to maintain air flow
Minimize disease
Prune diseased canes or buds

4. Horticultural practices to minimize disease

5. Horticultural practices to minimize disease

6. Horticultural practices to minimize disease
Water
Essential for growth of roses
Water to minimize splashing of leaves
Overhead watering prior to spraying to cool off roses and remove spray residue
Mulch to minimize water loss
Watering but splashing rose leaves can induce black spot
Remove bottom leaves

7. Check your garden for disease
Or get the Past President of the ARS to survey your garden

8. PESTS?? An undesirable substance in the garden Fungus Insect Weed
blackspot
Insect
Spider mites
Weed
Individual

9. Insecticides Use only when needed Seasonal problems
April Aphids and Midge
May & June Thrip & Japanese beetles
July & August Spider Mites
September Cucumber beetles
-October Scale

10. Insecticides- April & May Aphids and Midge
Water
Insecticidal soap, dish soap
Pyrethrin
Bayer products

11. Insecticides- April & May Aphids and Midge
Water
Insecticidal soap, dish soap
Pyrethrin
Bayer products
Midge
First step eliminate larvae prior to dispersal from soil
Talstar, Imidacloprid & cyfluthrin

12. Midge
Control: Monitor plants in early spring to detect midge. Cut off damaged blooms, foliage.
Treat rosebeds with Triazicide or other soil insecticide.
Spray with insecticide –every two weeks
Add photo of midge fly --

13. We need to protect our blooms in the summer from..

14. May & June Thrips & J. Beetles

15. Thrips
Thrips cause damage such as browning on the inside petals of light colored roses.
Tiny, slender, brownish winged insects, barely visible to naked eye.
Look for them in the petals of light colored roses, especially in the spring.
Damage caused by rasping mouthparts.
Cause some blooms not to open.

16. Thrips
Treatment: Mist flowers and top foliage with Orthene, Cygon 2E, Bayer Rose and Flower, Merit, Conserve, flower bonnets.
                                                            
Add picture—See rose insect plate, Chapter IX

17. Japanese Beetles Treat lawn for grubs Treat roses
Carbaryl (Sevin) 2times/week
Remove beetles and place in soapy water
Imidacloprid + cyfluthrin
Pyrethrin + Rotenone
Neem oil is deterrent, tastes bad

18. Rose Cane Borer Bores holes in larger canes Prune below hole
Cut at 45o or greater
Seal cuts
Spray pyr/rotenone, cyfluthrin, cygon 2E

19. July & August Spider Mites
Water underside every 3 days
Water rose beds
Avid
Imidacloprid/cyfluthrin
Pyrethrin/Rotenone
Floramite

20. Life cycle is 5-20 days depending on temperature
Miticides
Life cycle is 5-20 days depending on temperature
Higher temp more eggs are laid, higher infestation
No systemic miticides-Why?
Mites feed near plant veins and midrib not in xylem or phloem so never come in contact with systemic miticides

21. Miticide selection Avid/Lucid Floramite Translaminar Only Kills adults
Works on opening Cl channel in nerves
Floramite
Works by Contact, must spray underside of leaves
Kills all stages of life cycle
Closes Cl channels in nerves

22. Miticide selection Hexygon Forbid 4F Kills adults and Larvae
Contact spray, must spray underside of leaves to be effective
Inhibits embryo and larva formation
Forbid 4F
Translaminar and contact; lipid synthesis inhibitor causes water imbalance and dehydration in mites and whiteflies
Kills all stages
Residual action for 4-8 weeks

23. Miticide selection TetraSan Akari, Sanmite and Shuttle Translaminar
Kills eggs and larva, minimal effect on adults
Inhibits formation of exoskeleton
Prevent eggs and larva developing normally
Akari, Sanmite and Shuttle
Inhibit mitochondria
Akari contact and stomach
Akari, Sanmite and Shuttle work by contact

24. Sept & Oct – Cucumber Beetles
-Pyrethrin/rotenone
-Neem oil
-Ultrafine oil
-Cyfluthrin
-Water jet for eggs

25. October - Rose Scale Rose scale is an insect Attaches to canes
May look scaly
Appears in Fall
Lime Sulfur, Dormant oil

26. Enjoy your roses

28. Thank you for your attention