Formulation based on essential oils and its use in the fight against fruit flies, specifically the species Drosophila suzukii

Abstract

The invention relates to a mixture of essential oils comprising, relative to the total volume of the essential oil mixture, 2 to 35% by volume of eugenol; 2 to 35% by volume of methyl salicylate; and 2 to 35% of carvone. The invention also relates to the use of this mixture of essential oils in plant protection compositions for the pesticide treatment of plants, particularly in the control of fruit flies, more preferably the species Drosophila suzukii. No figure.

Description

Title of the invention: Formulation based on essential oils and its use in the control of the fruit fly, specifically the species Drosophila suzukii Field of invention

[0001] The present invention relates to a combination of essential oils and formulations comprising such a combination useful for the insecticide treatment of plants, particularly in the control of the fruit fly, specifically the species Drosophila suzukii. Technical background

[0002] Drosophila suzukii is a dipteran insect of the family Drosophilidae. This fly, native to Asia, was identified in France in the 2010s. It causes significant damage to many fruit species, particularly cherries and small red fruits (strawberries, raspberries, blackberries, blueberries). Since 2010, this invasive pest has widely colonized French orchards, becoming the main pest of cherry crops and almost replacing the endemic cherry fruit fly, Ragoletis cerasi. Its high potential for damage and invasion is due to its polyphagy, rapid reproduction, and mobility.

[0003] The only method of controlling Drosophila suzukii that is sufficiently effective to date for maintaining a satisfactory level of plant health remains protection with synthetic plant protection products. The three reference chemical active substances that are sufficiently effective for treating Drosophila suzukii on cherries have been withdrawn from the market or are in the process of being withdrawn from the market due to their toxicity to humans and the environment. Dimethoate was withdrawn from the market in 2016. Phosmet was withdrawn from the market in 2022. The last remaining active substance, widely used by producers in 2023, is cyantra-niliprole, which can only be used under a derogation from the marketing authorization.

[0004] There are few truly effective alternative solutions on the market to replace chemical control. The alternatives are either very expensive, such as insect netting (more than €20,000 investment per hectare) with drawbacks for biodiversity (resurgence of mites), or very ineffective, such as mass trapping.

[0005] Regarding other synthetic products, such as pyrethroid insecticides, these are broad-spectrum insecticides that are not sufficiently effective against Drosophila suzukii and generate resistance problems. Furthermore, their continued availability on the market for the next 5 years is not guaranteed. from the point of view of their toxicity.

[0006] The technical sustainability of cherry production is no longer assured and the industry is urgently seeking effective solutions against Drosophila suzukii.

[0007] There is therefore an interest in providing effective compositions, particularly against Drosophila sizukii. There is an interest in providing such compositions that do not cause toxicity to plants. Summary of the invention

[0008] The invention relates primarily to a mixture of essential oils comprising, with respect to the total volume of the mixture of essential oils: - 2 to 35% by volume of eugenol; and - 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone.

[0009] In one embodiment, the essential oil mixture further comprises: - 2 to 35% by volume of limonene; and / or - 2 to 35% by volume of geraniol; and / or - 2 to 35% by volume of citronellol; and / or - 2 to 35% by volume of citronellal,

[0010] The total of eugenol, methyl salicylate, carvone, limonene, geraniol, citronellol and citronellal represents 50 to 90% by volume relative to the total volume of the mixture of essential oils.

[0011] Preferably, the essential oils are chosen from Java citronella (Cymbopogon winterianus) essential oil, Ceylon citronella (Cymbopogon nardus) essential oil, palmarosa (Cymbopogon martini) essential oil, rose geranium (Pelargonium graveolens) essential oil, Ceylon cinnamon leaf (Cinnamomum verum) essential oil, clove (Eugenia caryophyllus) essential oil, allspice (Pimenta dioica) essential oil, wintergreen (Gaultheria fragrantissima) essential oil, creeping wintergreen (Gaultheria procumbens) essential oil, Securidaca longepedonculata essential oil, caraway (Carum carvi) essential oil, spearmint (Mentha) essential oil spicata), dill essential oil (Anethum graveolens) or any of their mixtures.

[0012] The present invention relates to a composition Cl comprising, with respect to the total volume of the composition Cl: - 60% to 95% by volume, preferably 80% to 95% by volume, of at least one surfactant; - from 2.5 to 20% by volume, preferably from 2.5 to 10% by volume, of the mixture of essential oils according to the invention; and from 2.5 to 20% by volume, preferably from 2.5 to 10% by volume, of at least one vegetable oil.

[0013] The present invention also relates to a Cld composition comprising, with respect to the total volume of the Cld composition: from 0.03 to 0.3% by volume, preferably from 0.03 to 0.15% by volume, of the mixture of essential oils according to the invention; 0.03 to 0.3% by volume, preferably 0.03 to 0.15% by volume, of vegetable oil; 0.5 to 2% by volume, preferably 0.5 to 1.5% by volume, of surfactant; 98% to 99.44% by volume, preferably 98% to 99% by volume, of water.

[0014] The present invention also relates to a composition C2 comprising, with respect to the total volume of composition C2: from 7.5 to 30% by volume, preferably from 7.5 to 15% by volume, of a mixture of essential oils according to the invention; from 7.5 to 30% by volume, preferably from 7.5 to 15% by volume, of at least one esterified vegetable oil; and 40 to 85% by volume, preferably 70 to 85% by volume, of water.

[0015] The present invention also relates to a C2d composition comprising, with respect to the total volume of the C2d composition: from 0.05 to 0.30% by volume, preferably from 0.05 to 0.15% by volume, of the mixture of essential oils according to the invention; 0.05 to 0.30% by volume, preferably 0.05 to 0.15% by volume, of esterified vegetable oil; 99.4 to 99.9% by volume, preferably 99.4 to 99.7% by volume, of water.

[0016] The present invention also relates to the use of the mixture of essential oils according to the invention or of compositions Cl, Cld, C2, C2d, for the pesticide treatment of plants, in particular in the control of the fruit fly, specifically the species Drosophila suzukii.

[0017] The present invention also relates to a method of pesticide treatment of plants, in particular in the control of the fruit fly, specifically the species Drosophila suzukii, comprising the application on the plant, preferably by foliar application, of a composition comprising 0.5 to 2.5, preferably 0.5 to 1.5 of a Cl or C2 composition per 100 of phytosanitary treatment composition. Detailed description

[0018] The invention is now described in more detail and in a non-limiting manner in the following description.

[0019] Unless otherwise indicated, all percentages are volume percentages.

[0020] In this text, the quantities indicated for a given species may apply to that species according to all its definitions (as mentioned in this text), including more restricted definitions. Essential oil blend

[0021] The invention relates primarily to a mixture of essential oils comprising, with respect to the total volume of the mixture of essential oils: - 2 to 35% by volume of eugenol; and - 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone.

[0022] The essential oil mixture of the invention may further comprise, relative to the total volume of the essential oil mixture: - from 2 to 35% by volume of limonene; and / or - 2 to 35% by volume of geraniol; and / or - 2 to 35% by volume of citronellol; and / or - 2 to 35% by volume of citronellal.

[0023] A particular blend of essential oils according to the invention is a blend of essential oils comprising, relative to the total volume of the blend of essential oils: - from 2 to 35% by volume of eugenol; and - 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone; And - 2 to 35% by volume of geraniol.

[0024] Another particular mixture of essential oils according to the invention is a mixture of essential oils comprising, relative to the total volume of the mixture of essential oils: - 2 to 35% by volume of eugenol; and - 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone; And - 2 to 35% by volume of citronellal.

[0025] Another particular mixture of essential oils according to the invention is a mixture of essential oils comprising, relative to the total volume of the mixture of essential oils: - 2 to 35% by volume of eugenol; and - 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone; And - 2 to 35% by volume of citronellal; and - 2 to 35% by volume of geraniol.

[0026] Another particular mixture of essential oils according to the invention is a mixture of essential oils comprising, in relation to the total volume of the essential oil mixture: - 2 to 35% by volume of eugenol; and - 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone; And - 2 to 35% by volume of limonene; etu - 2 to 35% by volume of geraniol; and - 2 to 35% by volume of citronellol; and - 2 to 35% by volume of citronellal.

[0027] Preferably, the total of eugenol, methyl salicylate, carvone, limonene, geraniol, citronellol and citronellal represents 50 to 90% by volume relative to the total volume of the essential oil mixture

[0028] The mixture of essential oils according to the invention can consist of 3 to 13 different essential oils.Among the essential oils that can be used are Java citronella (Cymbopogon winterianus), Ceylon citronella (Cymbopogon nardus), palmarosa (Cymbopogon martini), rose geranium (Pelargonium graveolens), Ceylon cinnamon leaf (Cinnamomum verum), clove (Eugenia caryophyllus), allspice (Pimenta dioica), wintergreen (Gaultheria fragrantissima), creeping wintergreen (Gaultheria procumbens), securidaca (Securidaca longepedonculata), caraway (Carum carvi), and spearmint (Mentha spicata). dill (Anethum graveolens) or any mixture thereof.

[0029] A person skilled in the art can easily determine the essential oils to be mixed and the quantity of these oils in order to obtain the mixture of essential oils according to the invention.

[0030] Essential oils being corrosive and acidic, they cannot be used undiluted, as this can cause burns. The mixture of essential oils according to the invention, which is a concentrated mixture, must therefore be formulated in a composition suitable for phytosanitary use, and in particular for application by spraying. Phytosanitary composition

[0031] Thus, in a particular embodiment, the present invention relates to a composition (Cl), preferably a plant protection composition (Cl), comprising, with respect to the total volume of the composition (Cl): - from 60% to 95% by volume, preferably from 80% to 95% by volume, of at least a surfactant; - from 2.5 to 20% by volume, preferably from 2.5 to 10% by volume, of the mixture of essential oils according to the invention; and - 2.5 to 20% % by volume, preferably 2.5 to 10% by volume, of at least one vegetable oil.

[0032] Preferably, in the composition (Cl) of the invention the volume ratio of the mixture of essential oils to the volume of at least one vegetable oil is between 0.5 and 2, preferably is about 1.

[0033] The molecules composing essential oils have low molecular weights and are, therefore, more volatile and more susceptible to breakdown in solution. Thus, combining essential oils with at least one vegetable oil helps protect the molecules contained in the essential oils and consequently preserve the biochemical properties of the essential oils. Advantageously, the mixture of essential oils according to the invention is first mixed with at least one vegetable oil, thus forming an oily solute, which is then mixed with at least one surfactant. The mixture with the surfactant generates microencapsulation of the oily solute and the formation of micelles.

[0034] The composition (Cl) according to the invention is therefore preferably obtained according to the following process: a. mixture of at least one vegetable oil with the mixture of essential oils according to the invention; b. mixing the composition obtained in step a) with at least one surfactant.

[0035] The vegetable oil used in the composition (Cl) is preferably a vegetable oil rich in unsaturated fatty acids (preferably between 60 and 90% by weight) and saturated fatty acids (between 40 and 10% by weight) and having a high molecular weight (preferably between 14 and 26 carbon atoms). Among the vegetable oils that can be used in the context of the present invention, coconut oil, olive oil, palm oil, rapeseed oil, sunflower oil, or any mixture thereof, may be mentioned in particular.

[0036] In the context of the present invention, the surfactant may be a composition comprising a surfactant, for example a composition comprising water and a surfactant.

[0037] The surfactant is an amphiphilic compound having a lipophilic (nonpolar) portion and a hydrophilic (polar) portion. The surfactant used in the composition (Cl) according to the invention can be any type of surfactant typically used in plant protection compositions; preferably, it is vegetable oil-based. The surfactant of the invention is preferably black soap (obtained from olive and / or linseed oil).

[0038] Preferably, the composition (Cl) of the invention comprises from 0.15 to 7% in volume, preferably 0.15 to 1.5% by volume, eugenol, 0.15 to 7% by volume, preferably 0.15 to 1% by volume, methyl salicylate, 0.15 to 7% by volume, preferably 0.15 to 1% by volume, carvone and optionally 0.15 to 7% by volume, preferably 0.15 to 0.5% by volume, citronellal and / or 0.15 to 7% by volume, preferably 0.15 to 0.5% by volume, of citronellol and / or 0.15 to 7% by volume, preferably 0.15 to 0.5% by volume, of geraniol and / or 0.15 to 7% by volume, preferably 0.15 to 0.5% by volume of limonene relative to the total volume of the composition (Cl).

[0039] Before use on plants, the composition (Cl) can be diluted in a plant protection treatment composition (also called spray mixture) (to form a composition (Cld) comprising, relative to the total volume of the composition (Cld): - from 0.03 to 0.3% by volume, preferably from 0.03 to 0.15% by volume, of the mixture of essential oils according to the invention; - 0.03 to 0.3% by volume, preferably 0.03 to 0.15% by volume, of vegetable oil; - 0.5 to 2% by volume, preferably 0.5 to 1.5% by volume, of surfactant; - 98% to 99.44% by volume, preferably 98% to 99% by volume, of water.

[0040] Preferably, the composition (Cld) of the invention comprises, relative to the total volume of the composition (Cld), from 0.002% to 0.1%% by volume, preferably from 0.002 to 0.02% by volume, eugenol, from 0.002% to 0.1% by volume, preferably from 0.002 to 0.02% by volume of salicylate methyl, from 0.002% to 0.1% by volume, preferably from 0.002 to 0.01% by volume of carvone and optionally from 0.002% to 0.1% by volume, preferably from 0.002 to 0.009% by volume, citronellal, from 0.002% to 0.1% by volume, preferably from 0.002 to 0.002% by volume, 0.009% by volume, of citronellol, from 0.002% to 0.1% by volume, preferably from 0.002% to 0.009% by volume, geraniol, from 0.002% to 0.1% by volume, preferably from 0.002% to 0.009% by volume, limonene.

[0041] In another embodiment, the present invention relates to a composition (C2), preferably a plant protection composition (C2), comprising, with respect to the total volume of the composition (C2): - from 7.5 to 30% by volume, preferably from 7.5 to 15% by volume, of a mixture of essential oils according to the invention; - 7.5 to 30% by volume, preferably 7.5 to 15% by volume, of at least one esterified vegetable oil; and - 40 to 85% by volume, preferably 70 to 85% by volume, of water.

[0042] Preferably, in composition (C2) the ratio of the volume of the oil mixture is essential on the volume of esterified vegetable oil is between 0.5 and 2, preferably is about 1.

[0043] An esterified vegetable oil according to the invention can be obtained by reaction between a vegetable oil and a fatty alcohol.

[0044] Preferably, the vegetable oil according to the invention is chosen from olive oil, coconut oil, palm oil, sunflower oil, linseed oil, sweet almond oil, macadamia oil, argan oil, rapeseed oil, camelina oil, rice oil, wheat germ oil, or any mixture thereof.

[0045] Preferably, the fatty alcohol is glycerol.

[0046] The composition (C2) of the invention is preferably obtained according to the following process: a. Heating the esterified vegetable oil to make it more liquid; b. Mixing the esterified vegetable oil obtained in step a) with the mixture of essential oils; and c. Mixing the solution obtained in step b) with water. The composition (C2) of the invention preferably comprises from 0.3 to 7% by volume, preferably from 0.3 to 2% by volume, of eugenol, from 0.3 to 7% by volume, preferably from 0.3 to 2% by volume, of methyl salicylate, from 0.3 to 7% by volume, preferably from 0.3 to 1.5% by volume, of carvone and possibly 0.3 to 7% in volume, preferably 0.3 to 1% by volume, of citronellal and / or 0.3 to 7% in volume, preferably 0.3 to 1% by volume, of citronellol and / or 0.3 to 7% in volume, preferably 0.3 to 1% by volume, of geraniol, and / or 0.3 to 7% by volume, preferably 0.3 to 1% by volume of limonene.

[0048] Before use on plants, the composition (C2) according to the invention can be diluted in a plant protection treatment composition (also called spray mixture) to form a composition (C2d) comprising, relative to the total volume of the composition (C2d): - from 0.05 to 0.30% by volume, preferably from 0.05 to 0.15% by volume, of the mixture of essential oils according to the invention; - 0.05 to 0.30% by volume, preferably 0.05 to 0.15% by volume, of esterified vegetable oil; - 99.4 to 99.9% by volume, preferably 99.4 to 99.7% by volume, of water. Preferably, the composition (C2d) of the invention comprises, relative to the total volume of the composition (C2d), from 0.002% to 0.1% by volume, preferably from 0.002 to 0.02% by volume, of eugenol, from 0.002% to 0.1% by volume, preferably from 0.002 to 0.02% by volume of methyl salicylate, from 0.002% to 0.1% by volume, preferably from 0.002 to 0.01% by volume of carvone and optionally from 0.002% to 0.1% by volume, preferably from 0.002 to 0.009% by volume, citronellal, 0.002% to 0.1% by volume, preferably 0.002 to 0.009% by volume, of citronellol, 0.002% to 0.1% by volume, preferably 0.002 to 0.009% by volume, of geraniol, 0.002% to 0.1% by volume, preferably 0.002 to 0.009% by volume, of limonene.

[0050] The present invention also relates to the use of esterified vegetable oil, in particular as a stabilizer, for the emulsification of a mixture of essential oils in water.

[0051] In the context of the present invention, "water" means any type of water, such as demineralized water, ionized water, salt water, water in which plants or vegetables have been infused or macerated, etc. Use and processing method

[0052] The present invention also relates to the use of a mixture of essential oils according to the invention or of any of the compositions (Cl), (Cld), (C2) or (C2d) according to the invention for pesticide treatment, preferably insecticide treatment, of plants, in particular for the control of the fruit fly, more preferably the species Drosophila suzukii.

[0053] The present invention also relates to the use of a mixture of essential oils according to the invention in a plant protection composition for its pesticidal effect and, in particular, for its insecticidal effect, preferably on the fruit fly, more preferably the species Drosophila suzukii. Preferably, the compositions according to the invention act as both a repellent and an insecticide.

[0054] The present invention also relates to a pesticide treatment method, preferably an insecticide treatment, in particular for the control of the fruit fly, more preferably the species Drosophila suzukii, comprising the application, on plants, of a composition (Cld) or (C2d) according to the invention.

[0055] Preferably, compositions (Cl) and (C2) are used at a ratio of 0.5 L to 2.5 L, preferably 0.5 L to 1.5 L, per 100 L of plant protection treatment composition (also called spray mixture). In one embodiment, the plant protection treatment composition is water or water containing at least one active plant protection compound.

[0056] Preferably, the mixture of essential oils or the compositions (Cl), (Cld), (C2) or (C2d) according to the invention are used by spraying on plants, in particular on the leaves of plants.

[0057] The use of the compositions according to the invention relates to all types of plants and, in particular, all types of crops. Preferably, the use according to the invention is particularly suited to external treatment, especially for open-field crops but also for greenhouse crops. Preferably, the invention relates to fruit crops (cherry, fig, etc.) and vegetable crops (strawberry, etc.).

[0058] The invention will be explained in more detail in the examples that follow. Examples

[0059] Unless otherwise stated, percentages are expressed by volume relative to the total volume of the composition. Compositions according to the invention

[0060] A composition (Cl) is prepared according to the invention and comprising: - 90.90% by volume of black soap; - 4.55% by volume of olive oil; and - there 1.25% by volume of eugenol, 0.8 to 1% by volume of methyl salicylate, 0.4 to 0.6% by volume of carvone, 0.2 to 0.4% by volume of citronellal, 0.1 to 0.4% by volume of citronellol, 0.1 to 0.4% by volume of geraniol, 0.2 to 0.5% by volume of limonene.

[0061] A composition (C2) is prepared according to the invention and comprising: - 83.34% by volume of water; - 8.33% by volume of olive oil esterified with glycerol; - 1 to 1.5% by volume of eugenol, 1.5 to 1.8% by volume of salicylate methyl, 0.7 to 1.5% by volume of carvone, 0.4 to 0.8% by volume of citronellal, 0.4 to 0.8% by volume of citronellol, 0.3 to 0.8% by volume of geraniol, 0.5 to 0.83% by volume of limonene

[0062] In the following treatments, the entire composition is sprayed onto the plants to be treated. Plant treatment

[0063] Composition Cl was tested on Belgian cherry trees at a rate of 7.5 L per 500 L of spray volume, with 5 treatments every 7 days. Fruit infested by Drosophila suzukii was then assessed 10 days after the last treatment. Trees treated with composition Cl showed: 0% infested fruit, compared to the untreated control: 28% infested fruit, compared to the producer's chemical reference: 0% infested fruit. Product efficacy = 100%, equivalent to the chemical reference

[0064] Composition C2 was tested on Belgian cherry trees at a rate of 5 L per 500 L of spray volume, with 3 treatments every 7 days. Fruit infested by Drosophila suzukii was then assessed 4 days after the last treatment. Trees treated with composition C2 showed 3.3% infested fruit, compared to the untreated control: 96% infested fruit, compared to the producer's chemical reference: 3.3% infested fruit. Product efficacy = 96.7%, equivalent to the chemical reference.

Claims

Claims

1. A mixture of essential oils comprising, relative to the total volume of the mixture of essential oils: - from 2 to 35% by volume of eugenol; and - from 2 to 35% by volume of methyl salicylate; and - from 2 to 35% by volume of carvone.

2. The essential oil blend of claim 1 further comprising: - from 2 to 35% by volume of limonene; and / or - from 2 to 35% by volume of geraniol; and / or - from 2 to 35% by volume of citronellol; and / or - from 2 to 35% by volume of citronellal, the total of eugenol, methyl salicylate, carvone, limonene, geraniol, citronellol and citronellal represents from 50 to 90% by volume relative to the total volume of the essential oil blend.

3. A mixture of essential oils according to claim 1 further comprising: - from 2 to 35% by volume of geraniol; or - from 2 to 35% by volume of citronellal; or - from 2 to 35% by volume of geraniol and from 2 to 35% by volume of citronellal.

4. A blend of essential oils according to any one of claims 1 to 3, wherein the essential oils are selected from Java citronella essential oil (Cymbopogon winterianus), Ceylon citronella essential oil (Cymbopogon nardus), palmarosa essential oil (Cymbopogon martini), rose geranium essential oil (Pelargonium graveolens), Ceylon cinnamon leaf essential oil (Cinnamomum verum), clove essential oil (Eugenia caryophyllus), allspice essential oil (Pimenta dioica), wintergreen essential oil (Gaultheria fragrantissima), wintergreen essential oil (Gaultheria procumbens), securidaca essential oil (Securidaca longepedonculata), caraway essential oil (Carum carvi), spearmint essential oil (Mentha spicata), dill essential oil

5.

6.

7.

8. (Anethum graveolens) or any of their mixtures. Composition Cl comprising, relative to the total volume of composition Cl: - from 60% to 95% by volume, preferably from 80 to 95% by volume, of at least one surfactant; - from 2.5 to 20% by volume, preferably from 2.5 to 10% by volume, of the mixture of essential oils according to any one of claims 1 to 4; and - from 2.5 to 20% by volume, preferably from 2.5 to 10% by volume, of at least one vegetable oil. Cld composition comprising, in relation to the total volume of the Cld composition: - from 0.03 to 0.3% by volume, preferably from 0.03 to 0.15% by volume, of the mixture of essential oils according to any one of claims 1 to 4; - from 0.03 to 0.3% by volume, preferably from 0.03 to 0.15% by volume, of vegetable oil; - from 0.5 to 2% by volume, preferably from 0.5 to 1.5% by volume, of surfactant; - from 98% to 99.44% by volume, preferably from 98% to 99% by volume, of water. Composition C2 comprising, in relation to the total volume of composition C2: - from 7.5 to 30% by volume, preferably from 7.5 to 15% by volume, of a mixture of essential oils according to any one of claims 1 to 4; - from 7.5 to 30% by volume, preferably from 7.5 to 15% by volume, of at least one esterified vegetable oil; and - from 40 to 85% by volume, preferably from 70 to 85% by volume, of water. Composition C2d comprising, in relation to the total volume of composition C2d: - from 0.05 to 0.30% by volume, preferably from 0.05 to 0.15% by volume, of the mixture of essential oils according to any one of claims 1 to 4; - from 0.05 to 0.30% by volume, preferably from 0.05 to 0.15% by volume, of esterified vegetable oil; - from 99.4 to 99.9% by volume, preferably from 99.4 to 99.7% by volume, of water.

9. Use of the mixture of essential oils according to any one of claims 1 to 4 or of the compositions according to any one of claims 5 to 8, for the pesticide treatment of plants, in particular in the fight against fruit flies, more preferably the species Drosophila suzukii.

10. Method for pesticide treatment of plants, in particular in the fight against fruit flies, more preferably the species Drosophila suzukii, comprising the application to the plant, preferably by foliar application, of a composition comprising 0.5 to 2.5 l, preferably 0.5 to 1.5 l of composition C1 or C2 according to claims 5 or 7 per 100 l of phytosanitary treatment composition.