Controlling insect pests in the garden
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Controlling Insect Pests in the Garden. Dr. Monica Valentovic And Dr. Gary Rankin. Control of Pests is a decision making process. Plant selection – Japanese beetles Horticulture practices Pesticide management. Horticultural practices to minimize disease. Planting

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Controlling Insect Pests in the Garden

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Controlling insect pests in the garden

Controlling Insect Pests in the Garden

Dr. Monica Valentovic

And

Dr. Gary Rankin


Control of pests is a decision making process

Control of Pests is a decision making process

  • Plant selection – Japanese beetles

  • Horticulture practices

  • Pesticide management


Horticultural practices to minimize disease

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


Horticultural practices to minimize disease1

Horticultural practices to minimize disease


Horticultural practices to minimize disease2

Horticultural practices to minimize disease


Horticultural practices to minimize disease3

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


Check your garden for disease

Check your garden for disease

  • Or get the Past President of the ARS to survey your garden


Pests

PESTS??

  • An undesirable substance in the garden

  • Fungus

    • blackspot

  • Insect

    • Spider mites

  • Weed

  • Individual


Insecticides

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


Insecticides april may aphids and midge

Insecticides- April & MayAphids and Midge

  • Aphids

    • Water

    • Insecticidal soap, dish soap

    • Pyrethrin

    • Bayer products


Insecticides april may aphids and midge1

Insecticides- April & MayAphids and Midge

  • Aphids

    • Water

    • Insecticidal soap, dish soap

    • Pyrethrin

    • Bayer products

  • Midge

    • First step eliminate larvae prior to dispersal from soil

    • Talstar, Imidacloprid & cyfluthrin


Midge

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


We need to protect our blooms in the summer from

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


May june thrips j beetles

May & June Thrips & J. Beetles


Thrips

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.


Thrips1

Thrips

  • Treatment: Mist flowers and top foliage with Orthene, Cygon 2E, Bayer Rose and Flower, Merit, Conserve, flower bonnets.


Japanese beetles

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


Rose cane borer

Rose Cane Borer

  • Bores holes in larger canes

  • Prune below hole

  • Cut at 45o or greater

  • Seal cuts

  • Spray pyr/rotenone, cyfluthrin, cygon 2E


July august spider mites

July & August Spider Mites

  • Water underside every 3 days

  • Water rose beds

  • Avid

  • Imidacloprid/cyfluthrin

  • Pyrethrin/Rotenone

  • Floramite


Miticides

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


Miticide selection

Miticide selection

  • Avid/Lucid

    • 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


Miticide selection1

Miticide selection

  • Hexygon

    • 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


Miticide selection2

Miticide selection

  • TetraSan

    • 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


Sept oct cucumber beetles

Sept & Oct – Cucumber Beetles

-Pyrethrin/rotenone

-Neem oil

-Ultrafine oil

-Cyfluthrin

-Water jet for eggs


October rose scale

October - Rose Scale

  • Rose scale is an insect

  • Attaches to canes

  • May look scaly

  • Appears in Fall

  • Lime Sulfur, Dormant oil


Controlling insect pests in the garden

Enjoy your roses


Controlling insect pests in the garden

Thank you for your attention


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