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WP 2 Plant species suitable to control arthropod pests in the vineyard

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Exploit biodiversity in viticultural systems to reduce pest damage and pesticide use, and increase ecosystems services provision

BIOVINE

WP 2 Plant species suitable to control arthropod pests in the vineyard

Patrik Kehrli

Agroscope, KIS & SCV

(2)

Viticultural pests

(3)

main focus within Biovine

Viticultural pests

(4)

Plants against viticultural pests

(5)

Plants against viticultural pests

(6)

1. Repel pests away from crop

2. Attract pests away from crop

Plants against viticultural pests

(7)

Viticultural beneficials

(8)

1. Repel pests away from crop

2. Attract pests away from crop

3. Conserve and

promote beneficials that regulate pests

Plants against viticultural pests

(9)

Objective 1: Plant species to repel Lobesia botrana Objective 2: Trap crops to attract Drosophila suzukii Objective 3: Plant species to promote beneficials

WP 2 Control of arthropod pests

(10)

Plant species to repel Lobesia botrana

WP 2 Control of arthropod pests

Aurora Ranca

Anamaria Petrescu

(11)

Plant species to repel Lobesia botrana

Based on a literature review of ~40 scientific papers by SCV

were selected to be tested on their repellence against L. botrana.

(12)

Plant species to repel Lobesia botrana

Based on a literature review of ~40 scientific papers by SCV

were selected to be tested on their repellence against L. botrana.

Wormwood (Artemisia absinthium) - fermented extract 100

grams dried plan in one liter of rainwater. repellent

Horseradish (Armoracia rusticana) infusion 30 grams per liter of water

repellent

Tagetes (Tagetessp.) infusion 250 grams dried plant in one liter

of rainwater. Insecticide, nematicid

Piretrum (Tanacetum cinerariifolium) infusion 100 grams dried plan in one liter of rainwater

Insecticide, repellent

Lavender (Lavandula angustifolia) infusion 100 grams dried plan in one liter of rainwater

repellent

Garlic (Allium sativum) macerated 12 hours in 3 tablespoons of linseed oil - in one liter of rainwater

repellent, nematicid

(13)

Plant species to repel Lobesia botrana

Toxicity to weak to directly kill larvae under field conditions

(14)

Plant species to repel Lobesia botrana

Larvae are not directly repelled by plant extracts

(15)

Plant species to repel Lobesia botrana

Several plant species repelled females from egg laying

(16)

Extracts of horseradish (Armoracia rusticana), tagetes (Tagetes sp.) and garlic (Allium sativum) were tested in experimental vineyard of SCV at BBCH 83-85.

Plant species to repel Lobesia botrana

(17)

Plant species to repel Lobesia botrana

Further field tests needed to confirm efficacy

(18)

Trap crops to attract Drosophila suzukii

WP 2 Control of arthropod pests

(19)

1. Study of attractivity and development success of D. suzukii on different plant species,

2. Identifying promising trap crop species and test of potential candidates under semi-field and field conditions.

2. High attractiveness for oviposition

3. Low development success

Grape maturation 1. Timing

Trap crops against Drosophila suzukii

(20)

Identification of 229 different host plant species in the

literature, from which 61 species were selected to be tested.

Trap crops against Drosophila suzukii

(21)

Trap crops against Drosophila suzukii

Development success

Prunus lusitanica Rubus fruticosus

Lycium barbarum

Cestrum fasciculatum Cornus amomum

Sambucus ebulus

Ampelopsis brevipeduncula Cornus alba

Vaccinium myrtillus

Mahonia aquilefolium

Eleagnus umbelata

Sambucus nigra Gold Rubus idaeus

Loniceraxylosteum

Frangula alnus

Atropa belladonna

Taxus bacata

Prunus laurocerasus

Lycium chinense

Basellaalba

Rhamnus cathartica

Sambucus nigra

Cornus alba sibirica

Prunus tenellus

Phytolacca americana Cornus mas

Symphoricaposalba

Solanumnigrum

Cornus kousa

Attractiveness

Vitis mara

(22)

Trap crops against Drosophila suzukii

Semi-field tests of 11 potential trap crops

(23)

Trap crops against Drosophila suzukii

(24)

Cage experiment

Ratio trap crop / vines

0 0.5 1

Field experiment

Trap crops against Drosophila suzukii

Semi-field and field tests with Lonicera xylosteum as trap plant

(25)

Trap crops against Drosophila suzukii

No protection of grapes

(26)

Lausanne

Jura

Trap crops against Drosophila suzukii

(27)

Ovipositions/g of grapes

Trap crops against Drosophila suzukii

No protection of grapes

(28)

Plant species to promote beneficials

WP 2 Control of arthropod pests

Jaka Razinger

(29)

Promotion of beneficials

Based upon a literature survey the species rich cover crop mix

Artenreiche Spezial-Dauerbegrünung (Biohelp, Austria) was tested

It contains many target plant species that conserve and promote

beneficials

(30)

Traditional Cover crop

Promotion of beneficials

Sentinel eggs

(31)

Promotion of beneficials

No observation of a significant increase or decrease of predatory mites in the plot with cover crops.

(32)

Observation of a significant increase of beneficials in the plot with cover crops in 2019.

Promotion of beneficials

(33)

Promotion of beneficials

No observation of a significant increase or decrease of pests and beneficials in the plot with cover crops.

(34)

Promotion of beneficials

No observation of a significant increase in egg predation in the plot with cover crops.

(35)

Conclusion

Plant species to repel Lobesia botrana Trap crops to attract Drosophila suzukii Plant species to promote beneficials

WP 2 Control of arthropod pests

(36)

Communications

(37)

Referenzen

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