Banana Root Borer Stink Bugs (Gandhi) and leaf-footed bugs - - PowerPoint PPT Presentation

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Banana Root Borer Stink Bugs (Gandhi) and leaf-footed bugs - - PowerPoint PPT Presentation

Jul 25, 2023 357 likes •478 views

Banana Root Borer Stink Bugs (Gandhi) and leaf-footed bugs Management | Insecticides Beetle Karatax (Lambda-Cyhalothrin) MoA: 3A Foliar; broad spectrum can target beneficial insects as well Attacks all species of AzaDirect

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SLIDE 1

Stink Bugs (Gandhi) and leaf-footed bugs

Management | Insecticides Karatax (Lambda-Cyhalothrin)

  • MoA: 3A
  • Foliar; broad spectrum can target beneficial insects as well

AzaDirect (Azadirachtin)

  • MoA: UN
  • Only active against immatures/eggs
  • Some translaminar activity

Advance 10EC (Pyriproxyfen)

  • MoA: 7C
  • Only active against immatures/eggs

Sevin (Carbaryl)*

  • MoA: 1A
  • Organophosphate; older chemistry, not good for beneficial insects

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Illustration by FDACS - Division of Plant Industry.

Banana Root Borer

  • Beetle
  • Attacks all species of

banana

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Banana Root Borer

Life cycle Complete life cycle: 30 - 40 days

Illustration by Cook Islands Biodiversity Database.

83 Q-type

Bemisia tabaci

  • Higher resistance to

pyriproxyfen and imidacloprid than B-type

B-type

Bemisia argentifolii

  • More common
  • Less pesticide resistance

Whiteflies

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SLIDE 2

I II III IV Pupa Adult Eggs 85

Whiteflies

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Whiteflies

Can vector plant viruses

Varun & Saxina (2007)

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Whiteflies

Tomato yellow leaf curl virus

Severe yield loss

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SLIDE 3

Whiteflies

Cassava Mosaic Disease

12 - 82% loss in yields

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Whiteflies

Monitoring 90

Whiteflies

Monitoring 91

Whiteflies

Management | Biological 92

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SLIDE 4

Whiteflies

Management | Biological 93

Whiteflies

Management | Pesticide

Azadirect (Azadirachtin)

  • MoA: UN
  • Some translaminar; Insect Growth Regulator

Advance 10EC (Pyriproxfen)

  • MoA: 7C
  • Insect Growth Regulator

Abamectin 18C (Abamectin)

  • MoA: 6

Pronto (Imidacloprid)

  • MoA: 4A
  • Systemic activity

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Nematodes

  • Infect plant roots
  • Prevent uptake of water

and nutrients

  • Plant wilting, reduced

yields, and ultimately plant mortality

Jonathan D. Eisenback, Virginia Polytechnic Institute and State University, Bugwood.org

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Root-knot nematodes

21 - 28 days 96

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SLIDE 5

Nematodes

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Nematodes

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Root-knot nematodes

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Root-knot nematodes

Management | Solarization

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SLIDE 6

Root-knot nematodes

Management | Solarization

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Root-knot nematodes

Management | Solarization

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Root-knot nematodes

Management | Solarization

  • Leave for 4 weeks
  • Clear plastic
  • Bury the sides
  • Less effective in sandy soils
  • Need to form steam daily
  • Soil temp: 130F (55ºC) for 5

minutes to kill nematodes

  • Kills weeds & nematodes

top 12 inches of soil

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Root-knot nematodes

Management | Solarization

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SLIDE 7

Root-knot nematodes

Management | Solarization

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Root-knot nematodes

Management | Solarization

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Root-knot nematodes

Management | Marigolds

  • French marigolds, i.e.

varieties include Nemagold, Petite Blanc, Queen Sophia, and Tangerine

  • Avoid: signet marigolds, T.

signata or tenuifolia

  • Avoid ‘intercropping’; not as

effective for nematode suppression

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Root-knot nematodes

Management | Weed Management

  • Source of nematode

reproduction

  • Remove nearby weeds
  • Do not introduce soil from

nearby soils/weed areas into garden

  • Pay special attention to weeds

‘upstream’

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SLIDE 8

Leaf Miner

Central Science Laboratory, Harpenden , British Crown, Bugwood.org

  • eg. Liriomyza trifolii

On shallot

109 110

Leaf Miner

Monitor | Yellow sticky cards

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Leaf Miner

Monitor | Yellow bowl with soapy water

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SLIDE 9

Leaf Miner

Management | Biological Control

  • Parasitic wasps
  • Broad spectrum insecticides

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Leaf Miner

Management | Biological Control

Trap crop

Cucumber around the border or within crop - showed higher attractiveness in some studies

Shallot Cucumber Cucumber

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Leaf Miner

Management | Mechanical

Remove infested plant matter; bury deep or place in plastic bag & solarize

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Leaf Miner

Management | Insecticides

Acetamiprid - Caprid 20 SL

  • MoA: 4A
  • Systemic; several weeks of control

Azadirachtin - AzaDirect

  • MoA: UN
  • Translaminar

Cyromazine - LeafGuard

  • MoA: 17
  • Translaminar

Lambda-Cyhalothrin - Karatax

  • MoA: 3A

Abamectin - Abamectin 18C

  • MoA: 6

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SLIDE 10

Leaf Miner

Management | Market Threshold

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Thrips

Thysanoptera “Thysanos” = fringe “ptera" = wings 118

Thrips

Foliage Soil/Leaf litter

egg (in plant tissue) (2.5 - 4 days) 1st instar (1-2 days) 2nd instar (2-4 days) Prepupa (1-2 days) Pupa (1-3 days) Adult (30-45 days) (150 - 300 eggs)

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Thrips

UGA1327079

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