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

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 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




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




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