EP4561356A1 - Composition antifongique pulverisable utilisable en agriculture- procede et utilisation associes - Google Patents
Composition antifongique pulverisable utilisable en agriculture- procede et utilisation associesInfo
- Publication number
- EP4561356A1 EP4561356A1 EP23752007.7A EP23752007A EP4561356A1 EP 4561356 A1 EP4561356 A1 EP 4561356A1 EP 23752007 A EP23752007 A EP 23752007A EP 4561356 A1 EP4561356 A1 EP 4561356A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- equal
- composition
- composition according
- mass percentage
- resveratrol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/08—Oxygen or sulfur directly attached to an aromatic ring system
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/14—Boron; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
- A01N59/20—Copper
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/30—Microbial fungi; Substances produced thereby or obtained therefrom
- A01N63/32—Yeast
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/40—Liliopsida [monocotyledons]
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/40—Liliopsida [monocotyledons]
- A01N65/42—Aloeaceae [Aloe family] or Liliaceae [Lily family], e.g. aloe, veratrum, onion, garlic or chives
Definitions
- the present invention relates to an antifungal composition usable in agriculture which comprises compounds of natural origin as active agents.
- Pesticides are a major source of environmental pollution because they accumulate in the soil and diffuse into groundwater.
- a large quantity of pesticides is used to treat particular crops such as vines, fruit trees, vegetables or other plants grown in intensive agriculture. This is also the case for industrial crops like potatoes and cereals like wheat, for example.
- a good approach to reducing the quantity of plant protection products is, on the one hand, to target plant diseases for which the greatest quantities of plant protection products are used.
- WO 2007/139382 Al describes a composition for controlling foliar fungal pathologies of apple trees such as those caused by Venturia inaequalis and Podosphaera leucotricha.
- This document states that yucca extract and potassium bicarbonate have been shown to be active (separately) on leaves at certain concentrations. The combination of yucca extract with sulfur was not found to be more active. Copper in the form of copper hydroxide is the most active agent on leaves and fruits.
- RU 2204 248 Cl describes a treatment for damage to fruit and trees. This damage includes sunburn, injury, grafting.
- the product described contains tripoli stone and a fungicide.
- the fungicide can be copper sulfate, iron sulfate or copper oxychloride (Cu(OH)2).
- the product is intended for bark.
- Tripoli stone contains oxides such as iron oxide, aluminum oxide, calcium oxide, magnesium oxide, sodium oxide and potassium oxide. The product is not applied to the leaves. Additionally, this publication does not cite any fungal pathogens.
- composition of plants varies greatly depending on where they grow, the season and the stage at which they are harvested for use. Using a given plant to make an extract or infusion does not consistently produce a product that contains the active ingredients at their effective dose.
- a composition can be effective against a given pathogen on tomatoes but be ineffective against the same pathogen in another plant.
- pathogens whose life cycle passes through the soil are more difficult to control on plants with low foliage (vegetables for example) than plants with tall vegetation (trees and shrubs) because of contamination by the “splash effect”. » (splashing from mud during rain, for example).
- a technical problem that the present invention proposes to solve is to provide an antifungal composition containing active ingredients of natural origin which can be easily produced according to reproducible and standardized processes to result in a composition whose active contents are identified, standardized and consistent agronomic results.
- Another technical problem that the present invention aims to solve is to provide an antifungal composition which is harmless to animals and in particular to mammals including humans.
- Another technical problem that the present invention aims to solve is to provide an antifungal composition which is not phytotoxic.
- Another technical problem that the present invention proposes to solve is to provide an antifungal composition in particular as mentioned above which is effective against at least one pathogen chosen from: Alternaria solani, Plasmopara viticola, Septoria tritici, Fusarium graminearum, Erysiphe necator. Pythium ultimum, Tilletia caries, Zymoseptoria tritici and Rhizoctonia solani.
- Another technical problem that the present invention proposes to solve is to provide an antifungal composition in particular as mentioned above, which is effective for preventive and/or curative treatment on a plant chosen in particular from the plants of the following families: Brassicaceae including rapeseed , Fabaceae including soya, Vitaceae including vines, Poaceae including wheat, corn, Rosaceae including apple and pear trees, Solanaceae including potato, tomato, eggplant, Alliaceae including onion, garlic, shallot and leeks, Apiaceae including carrots, Asteraceae including lettuce, artichoke, and sunflower, and Chenopodiaceae including beets.
- Another technical problem that the present invention proposes to solve is to provide an antifungal composition which is effective against at least one fungal pathogen and preferably effective against several pathogens, chosen from: Altemaria solani, Septoria tritici, Plasmopara viticola, Fusarium graminearum and Erysiphe necator, Pythium ultimum, Tilletia caries, Zymoseptoria tritici and Rhizoctonia solani and in particular against A. solani in tomatoes and Plasmopara viticola in vines.
- pathogens chosen from: Altemaria solani, Septoria tritici, Plasmopara viticola, Fusarium graminearum and Erysiphe necator, Pythium ultimum, Tilletia caries, Zymoseptoria tritici and Rhizoctonia solani and in particular against A. solani in tomatoes and Plasmopara viticola in vines.
- Another technical problem that the present invention proposes to solve is to provide an antifungal composition which is harmless to the environment and easily degradable.
- Another technical problem that the invention proposes to solve is to provide an antifungal composition usable in agriculture which is versatile, that is to say effective against at least two fungal pathogens of the soil and/or foliar.
- Another problem that the present invention aims to solve is to provide a composition which can be diluted before its use and which, depending on its dilution, can be particularly effective against at least one given pathogen on at least two different plants.
- the present invention relates to an antifungal composition usable in agriculture, which contains molybdenum ions, in particular molybdate, and as active ingredient, a combination of at least one compound chosen from resveratrol, smilagenin and hecogenin and preferably three aforementioned compounds with molybdenum/molybdate ions and at least one trace element chosen from iron, potassium, magnesium, copper, manganese ions and in particular a mixture of these 5 ions.
- the composition contains resveratrol, more particularly trans resveratrol.
- the composition contains resveratrol, smilagenin and hecogenin. These compounds are preferably contained in yucca juice.
- composition may also contain resveratrol and hecogenin or resveratrol and smilagenin.
- Yucca extracts which were known as antifungal agents contain numerous compounds including saponins which were considered active. However, many saponins can be harmful to human health. Smilagenin and hecogenin, which are steroidal saponins, are present only in small quantities in the aqueous extract of yucca. It was therefore not clear whether these particular saponins could have an antifungal effect at very low doses.
- resveratrol, smilagenin and hecogenin are known to be harmless to human health.
- Resveratrol is known for its anti-inflammatory and antioxidant effects.
- Smilagenin is the subject of studies for its use in the treatment of orphan diseases, particularly neurological ones.
- Hecogenin is used to alleviate colitis or to treat atopic dermatitis and bronchial hyperreactivity.
- composition of the invention therefore proves effective as an antifungal and harmless to mammals, including humans.
- Smilagenin, hecogenin and resveratrol can be extracted and purified from the juice extracted from plants.
- resveratrol is present in fruit juices, particularly grape juices. Saponins are present in tea, chickpeas, climbing ivy leaves, soapwort, quinoa, fenugreek leaves, licorice root, ginseng roots, horse chestnut cotyledons, leaves of white broth and dioscora tubers, for example. It is therefore possible to use juices, infusions, extracts or decoctions of these plants possibly in a mixture to obtain the composition of the invention.
- Smilagenin, hecogenin and resveratrol can also be synthesized. It is thus easy to produce a standardized composition.
- the aforementioned ions can be introduced in the form of salts, in particular sulfate, chloride, iodide, ammonide, hydrochloride, oxychloride, hydroxide, sulfonate, carbonate, formate, acetate, gluconate, lactate, citrate and sodium and ammonium salts.
- the antifungal composition of the invention may also comprise one or more chelating agents chosen from EDTA, HEEDTA, DTPA, EDDHA, EDDHMA, EDDCHA, EDDHSA, IDHA, HBED, and/or at least one complexing agent chosen from lignosulfonic acid. and ethanolamine. These agents increase the solubility of metal ions and thus stabilize the composition of the invention when it contains a solvent.
- manganese, iron, magnesium and copper can preferably be introduced in the form of sulfates.
- the molybdate can preferably be introduced in the form of sodium molybdate.
- Potassium is preferably introduced in the form of potassium chloride.
- composition of the invention can be liquid or viscous or in powder form.
- it can consist of the aforementioned ingredients and in particular consist of a mixture of resveratrol, smilagenin, hecogenin and salts of the six aforementioned ions. It can also be in the form of a suspension.
- the vehicle contains a vehicle.
- the vehicle is not limited according to the invention.
- R is preferably water.
- the composition of the invention is preferably sprayable and/or capable of coating a solid.
- the composition may be a solution, a biphasic mixture, an emulsion or a micellar solution. It is advantageously an aqueous solution.
- the composition contains a mass percentage of trans resveratrol greater than or equal to 0.01 and/or a mass percentage of hecogenin greater than or equal to 0.00032 and/or a mass percentage of smilagenin greater than or equal to 0.004.
- the composition may contain resveratrol and hecogenin or resveratrol and smilagenin. It may also contain all three compounds.
- the composition contains the aforementioned ions with the exception of the copper ion and/or the manganese ion.
- the composition contains, as a trace element, molybdenum in the form of molybdate, magnesium and potassium.
- some of the active compounds are contained in yucca trunk juice and the composition therefore contains yucca trunk juice, which contains the three aforementioned compounds.
- the composition of the invention contains a mass percentage of yucca trunk juice greater than or equal to 0.0012.
- table 19 groups together the main preferred degrees of hydration of the salts.
- composition of the invention can be presented in two forms, a diluted form which can be used as is or a concentrated form to be diluted or dissolved before use.
- the composition of the invention may contain a mass percentage of yucca juice greater than or equal to: 1; 2; 2.5; 3; 3.5; 4; 4.5;5; 5.5; 6; 6.5 or 10.
- the mass percentage of yucca juice can, whatever the embodiment of the invention, can be equal to: 0.025; 0.03; 0.05; 0.06; 0.075; 0.09; 0.1; 0.15; 0.18; 0.2; 0.25; 0.3; 0.6; 1 (diluted form); 1.5; 2; 2.5, 3; 3.5; 4; 4.5;5; 5.5; 6; 6.5; or 10 (concentrated form).
- the mass percentage of yucca juice can be less than 30 or 20.
- the composition of the invention may contain a mass percentage of iron greater than or equal to 0.1 and less than or equal to 4 or 5 and/or a mass percentage of copper greater than or equal to 0, 1 and less than or equal to 4 or 5 and/or a mass percentage of potassium greater than or equal to 0.05 and less than or equal to 0.5 and/or a mass percentage of molybdenum greater than or equal to 0.01 and less than or equal to 0.05 and/or a mass percentage of manganese greater than or equal to 0.1 and less than or equal to 5 and/or a mass percentage of magnesium greater than or equal to 0.01 and less than or equal to 1.
- the composition of the invention may contain more particularly a mass percentage of iron greater than or equal to 0.6 and less than or equal to 0.9 and in particular equal to 0.77 and/or a percentage mass of copper greater than or equal to 0.3 and less than or equal to 0.45 and in particular equal to 0.375 and/or a mass percentage of magnesium greater than or equal to 0.12 and less than or equal to 0.19 and in particular equal to 0 .15, and/or a mass percentage of potassium greater than or equal to 0.09 and less than or equal to 0.13 and in particular equal to 0.109 and/or a mass percentage of molybdenum greater than or equal to 0.0035 and less than or equal to 0.005 and in particular equal to 0.004 and/or a mass percentage of manganese greater than or equal to 0.9 and less than or equal to 2.7 and in particular equal to 1.18 or 2.24.
- composition of the invention may, in addition, contain at least one ingredient chosen from humic acids, boron salts, zinc salts, acetic acid, citric acid, fructose, yeasts in particular Saccharomyces cerevisiae, iodine salts, lignosulfates, selenate salts, tungstate salts and liquid coffee extract.
- humic acids boron salts, zinc salts, acetic acid, citric acid, fructose, yeasts in particular Saccharomyces cerevisiae, iodine salts, lignosulfates, selenate salts, tungstate salts and liquid coffee extract.
- it contains acetic acid, citric acid, fructose, iodine salts in particular potassium iodide, lignosulfates, in particular calcium lignosulfates, salts tungstate, in particular sodium tungstate, selenate salts, in particular sodium selenate, liquid coffee extract, and yeast extract in particular Saccharomyces cerevisiae.
- the composition of the invention in its concentrated or diluted form contains the 6 ions in combination, each present in particular in the aforementioned ranges.
- the composition contains iron, magnesium, potassium and molybdenum.
- the composition also contains, as active ingredient, humic acids and/or boron and/or zinc.
- Boron can be in the form of boron ethanolamine, for example.
- each of the embodiments contains as a trace element zinc and/or iron and/or manganese and/or copper.
- the mass percentage of boron is equal to or greater than 0.01 and less than or equal to 1 and more particularly greater than or equal to 0.04 and equal to or less than 0.06 and in particular equal to 0.05.
- the mass percentage of humic acids is equal to or greater than 0.01 and less than or equal to 10 and more particularly greater than or equal to 0.17 and equal to or less than 0.26 and in particular equal to 0.21.
- Zinc can be in the form of zinc sulfate.
- the present invention also relates to a sprayable antifungal composition, usable in agriculture which contains the composition of the invention diluted in a solvent and in particular water; more particularly the sprayable composition may contain from 0.05% to 10% by weight of the composition of the invention and in particular 0.05%, 0.2%, 0.4%, 0.5%, 1%, 2%, 3%, 6% or 10% by mass of the aforementioned composition, diluted in a solvent and in particular water.
- the sprayable composition has an acidic pH greater than or equal to 3.2. At these pH values, the sprayable composition appears, at effective doses, to be non-phytotoxic.
- the present invention also relates to the use of a composition or a sprayable composition according to the invention as an antifungal against at least one pathogen chosen from Alternaria solani, Septoria tritici, Plasmopara viticola, Fusarium graminearum and Erysiphe necator, Pythium ultimum and Rhizoctonia solani.
- pathogen chosen from Alternaria solani, Septoria tritici, Plasmopara viticola, Fusarium graminearum and Erysiphe necator, Pythium ultimum and Rhizoctonia solani.
- the present invention also relates to a method of treating a plant in particular chosen from plants of the following families: Brassicaceae including rapeseed, Fabaceae including soya, Vitaceae including vines, Poaceae including wheat, corn, Rosaceae including apple pear trees, Solanaceae including potato, tomato, eggplant, Alliaceae including onion, garlic, shallot or leeks, Apiaceae including carrots, Asteraceae including lettuce, artichoke or sunflower and Chenopodiaceae including beet.
- the sprayable composition is applied to the leaves of said plant or the composition or said sprayable composition according to the invention is applied to the seeds of said plant.
- the present invention also relates to the use of resveratrol and/or smilagenin and/or hecogenin and in particular a mixture of trans resveratrol and smilagenin and/or hecogenin as an antifungal and in particular as an antifungal against a foliar fungal pathogen or a soil fungal pathogen chosen in particular from Fusarium graminearum, Pythium ultimum and Rhizoctonia solani.
- the present invention also relates to the use of a yucca juice for the treatment of a plant chosen in particular from vines, nightshades including potatoes, tomatoes and eggplants, cereals including wheat and corn. against at least one fungal pathogen living in the soil and in particular chosen from Alternaria solani, Septoria tritici, plasmopara viticola, Fusarium graminearum and Erysiphe necator, Pythium ultimum and Rhizoctonia solani.
- the present invention also relates to an antifungal composition which contains as active ingredients at least one compound chosen from resveratrol, smilagenin and hecogenin and preferably which contains these three compounds and humic acids and/or boron.
- This composition can be declined according to the same embodiments as the aforementioned composition, with regard to the concentrations of active agents, the vehicles or solvents and the pH, in particular. It can also be diluted in water according to the same dilutions as for the aforementioned sprayable composition. It can also be sprayed on the same plants as those described with reference to the composition described in the present application and containing at least one ion. Boron can be found in the form of boron ethanolamine.
- the present invention also relates to an antifungal composition which contains as active ingredients at least one compound chosen from resveratrol, smilagenin and hecogenin and preferably which contains these three compounds and zinc, in particular zinc sulfate, for example example.
- This composition can be declined according to the same embodiments as the aforementioned composition with regard to the concentrations of active agent, the vehicles or solvent and the pH, in particular. It can also be diluted in water according to the same dilutions as for the aforementioned sprayable composition. It can also be sprayed on the same plants as those described with reference to the composition described in the application and containing at least one ion.
- trans-resveratrol refers to 5-[(E)-2-(4-hydroxyphenyl)-ethenyl] benzene-1,3-diol.
- Similarin refers to (25R)-5beta-Spirostan-3beta-ol.
- hecogenin refers to (3p,5a,25)-3-Hydroxyspirostan-12-one
- mass percentage of A designate the mass fraction of A in a mixture of at least two constituents.
- volume percentage of A designate the volume fraction of A in a mixture of at least two constituents.
- yucca trunk juice designate an aqueous composition containing in particular resveratrol, saponins including smilagenin, trans-3,3',5,5'-tetrahydroxy-4'-methoxystilbene, larixinol and phenol derivatives. designated by the terms yuccaols A, B, C, D and E of yuccaone A and hecogenin.... Steroidal saponins represent only 6.8% by mass of saponins. Yucca trunk juice may also contain juice from yucca leaves but preferably only contains the juice from the trunk.
- yucca refers to all plants of the yucca genus and preferably yucca schidigera or yucca gloriosa.
- the juice may be a mixture of juices from different types of yucca.
- the yucca trunk juice is preferably heated to a temperature between 80°C and 120°C for a period equal to or greater than 1 min and equal to or less than 10 min and preferably heated to 100°C for 3 min.
- boron ethanolamine refers to the complex formed by the combination of ethanolamine and boric acid.
- humic acids refers to high molecular weight, negatively charged polymers, black to dark brown in color, resulting from a process of oxidative condensation of phenolic compounds and linked to amino acids, peptides and polysaccharides. They are present in humus.
- Fig. 1 represents the percentage of sporulating leaf surface depending on the treatments
- the reference GA342 designates the preferred mixture which makes it possible to obtain by dilution the composition of the invention, the volume percentage is indicated next to it, the control is pure water .
- the yucca juice used is obtained by crushing and pressing Yucca schidigera trunks. The liquid obtained was heated to 100°C for 3 min so as to be sterilized. This juice is used in all the experiments documented in the application.
- Yucca juice is a complex mixture. It contains a large number of saponins, including steroidal saponins. It also contains resveratrol, especially in its trans form.
- the inventors have identified compounds in yucca juice that are effective as antifungal agents: these are resveratrol, smilagenin and hecogenin.
- Aqueous solutions containing a given concentration of resveratrol or smilagenin were tested on a calibrated suspension of Alternaria solani spores.
- the % indicated in the tables with reference to the compositions tested are % by mass; the inhibition produced by the compositions tested is indicated in % in the tables.
- trans-3,4',5-trihydroxystilbene (resveratrol trans form) of the stilbene family at a concentration of 100 ppm in water is capable of reducing by 54.7%%. growth of A. solani.
- smilagenin which is a steroidal saponin, reduces the growth of A. solani by 30% at a concentration of 40 ppm in water.
- Hecogenin has no antifungal action on the pathogen studied. It is likely that the antifungal action of yucca juice comes mainly from the combined presence of resveratrol and smilagenin in yucca juice.
- the reduced antifungal action of yucca juice is due to the lower concentration of resveratrol and smilagenin in yucca juice. Indeed, in the table above resveratrol and smilagenin are used diluted in water. As the concentration of smilagenin and resveratrol in yucca juice is lower than in the tested compositions of smilagenin and resveratrol, the antifungal activity of yucca juice is lower at a dose of 2.5%. By increasing the concentration of yucca, the quantities of resveratrol and smilagenin increase in the same proportions and the effectiveness of Yucca juice becomes notable at 10%. Synergy of active compounds with trace elements
- compositions described below have a density equal to or greater than 1.15 and equal to or less than 1.2.
- the pH of each solution is acidic. It is for example adjusted by adding citric acid and/or acetic acid.
- compositions were prepared:
- Composition VI contains the ingredients indicated in the following Table 3. Table 3
- the salts are sulfates except for potassium which is introduced in the form of potassium chloride Molybdate is introduced in the form of sodium molybdate.
- Composition V6 contains the ingredients indicated in Table 4 below.
- the salts are sulfates except for potassium which is introduced in the form of potassium chloride.
- Molybdate is in the form of sodium molybdate.
- the salts used are the same as those used in composition V6.
- Table 6 below groups together the ECso and EC95 values of the different mixtures tested on A. solani.
- compositions VI and V6 diluted in water are effective against A. solani, which is not the case for the composition containing only yucca juice at 2 .5% or only yucca juice and one of the trace elements.
- composition V 1 is effective as soon as it is at a mass percentage of 0.05% while composition V6 is effective against R. solani from 1% or 2%.
- yucca juices 1 and 2 which are yucca schidigera juices from different producers do not have the same effectiveness on R. Solani.
- Yucca juice 1 has an effectiveness of 0 while “Yucca juice 2” records a performance of 95.2%.
- This difference in effectiveness clearly shows that it is not possible to produce a standard effective composition in a reproducible manner by directly using products derived from plants.
- compositions VI and V6 are manufactured from the aforementioned yucca juice 1.
- Evaluations were made with a 96-well microtiter assay to evaluate the in vitro fungicidal activity of each solution. A range of concentrations (up to 8) of each solution was tested against a calibrated suspension of Fusarium graminearum spores and against a calibrated suspension of Zymoseptoria tritici.
- Fusarium graminearum belongs to the species Gibberella zeae, ascomycete fungi of the Nectriaceae family. This fungus is the pathogenic agent of fusarium wilt in cereals and corn, causing heavy yield losses. It causes contamination of harvested grains with mycotoxins (fusariotoxins) which are dangerous for human and animal health. This disease develops both on seeds in the soil and on foliage during the season.
- mycotoxins mycotoxins
- Septoria tritici is an ascomycete fungus responsible for wheat septoria. Its average harmfulness is estimated at 17 q/ha (up to 50 q/ha in the most exposed situations). By its frequency and the extent of the potential damage, 5. tritici is the most important disease of soft wheat.
- Tables 10 and 11 The same experiments as mentioned above were carried out. The results are grouped in Tables 10 and 11 below. The percentages indicated are mass percentages. Table 10
- composition VI shows total effectiveness at a concentration of 6% by mass of composition VL. At this concentration, the water + yucca juice mixture shows 100% effectiveness.
- the diluted V6 composition has a effectiveness as soon as it is present at 0.5% or 1% by mass. It turns out to be more effective than composition VI.
- the addition of trace elements increases the antifungal character of yucca juice and therefore the antifungal character of at least one of the identified active compounds which are resveratrol, smilagenin and hecogenin.
- the antifungal nature of the active compounds was tested on S. tritici. The results are grouped in Table 12 below. The numbers show the % inhibition of pathogen growth.
- Resveratrol and hecogenin show effectiveness against Septoria tritici at very low concentrations, 100 ppm and 20 ppm respectively.
- c) Test on P. ultimum The same experiments as mentioned above were carried out. The results are grouped in Tables 13 and 14 below. The percentages indicated are mass percentages except for the % inhibition.
- composition VI provides 100% effectiveness at low concentrations, from 0.05% (Table 13).
- the combination of the active molecules resveratrol and hecogenin combined with trace elements makes it possible to achieve complete effectiveness at the lowest concentrations, from 0.05%. d) Test on Rhiz. octonia solani
- composition VI is more active than composition V6 probably due to the presence of humic acids and/or boron salt.
- the objective is to evaluate the direct in vitro effect of the composition of the invention on the mobility of zoospores of grape downy mildew (Plasmopara viticola) suspended in water.
- Downy mildew (Plasmopara viticola) is a population strain originating from Burgundy vineyards, maintained by weekly transplanting on plants.
- the experiment is carried out in vitro: sporangia of Plasmopara viticola are collected from a sporulating vine leaf (inoculated 7 days previously) and cultured in suspension in ultrapure water at a concentration of at least 106 sporangia/ml. The sporangia release mobile zoospores within an hour. This mobility is checked at the end of the experiment on the control suspension.
- Dilutions from sporangia solutions are prepared extemporaneously in ultrapure water to obtain a final zoospore concentration of 0.33% by mass.
- the diluted composition VI blocks the mobility of the zoospores of Plasmopara viticola at the reference concentration of 0.033% (v/v). Even diluted to 0.0033%, the mixture blocks or disrupts the mobility of the pathogen's zoospores.
- the density of the product being equal to or greater than 1.15 and equal to or less than 1.2
- the mass percentage of composition VI equivalent to the dilution of 0.0033 is equal to 0.004% which is equivalent to a mass percentage of juice of yucca equal to 0.00012%.
- Yucca juice alone at a dose of 0.33% has an action against the mobility of zoospores at a concentration 100 times higher (0.33%).
- the plant material consists of 2-month-old herbaceous cuttings of the Marselan variety (Grenache x Cabemet-Sauvignon) multiplied in INRAE greenhouses, grown in 0.5 L pots (2/3 potting soil - 1/3 perlite) . At 2 months, the cuttings have 5-6 spreading leaves.
- the downy mildew inoculum (Plasmopara viticola) is a population strain originating from the Burgundian vineyard, maintained by weekly transplanting on plants. A minimum of five plants are used per modality.
- composition of the invention to be tested is sprayed on the cuttings with a manual sprayer below the runoff point, on both sides of the leaves.
- the droplets are allowed to dry for 2 to 3 hours before placing the plants back in the greenhouse.
- the plants are inoculated 48 hours post-treatment, by spraying a suspension of Plasmopara viticola sporangia (104 sporangia/ml) prepared extemporaneously, on the underside of the leaves. After inoculation, the plants are placed in a humid tent for at least 3 hours to allow the zoospores to encyst, then they are placed back in a greenhouse. In vines, very young leaves (approximately 1/3 of their final size) and older leaves are resistant to the disease (ontogenic resistance). For this reason, the observation of the disease generally takes place on 2 sensitive leaves designated row 1 leaf and row 2 leaf. Row 1 corresponds to a leaf which has reached approximately 2/3 of its final surface, the Row 2 leaf, located immediately below that of row 1, is an adult-sized leaf, still susceptible to mildew.
- the first test was carried out with the initially recommended doses of IL, 2L and 3L/ha diluted in 150 L/ha, i.e. 6.67 ml/L, 13.33 ml/L and 20 ml/L.
- the following 2 experiments were carried out with lower doses: 1.67 ml/L, 3.33 ml/L and 6.67 ml/L.
- the reference GA342 designates composition V 1 in FIG. 1. The dilution is shown next to it.
- the means were compared with Tuckey's T-test (comparison of the solution containing composition V 1 with the water control).
- composition VI The average effectiveness of composition VI at a dose of 0.33% over 5 tests is 98.7%.
- effectiveness of composition VI against vine downy mildew is almost total from a dose of 1.7 mL/L or 0.17% by volume. Inhibition in in vitro conditions correlates well with that in in vivo conditions.
- the density of the composition being equal to or greater than 1.15 and equal to or less than 1.2.
- V6 composition it proved effective in vivo on the vine against Plasmopara viticola at a concentration of 0.50% or 2% by weight of a mother tincture containing 10% by weight of the V6 composition diluted in the water.
- the salts are sulfates except for potassium which is used in the form of potassium chloride.
- composition according to the invention used in the light and on a plant remains effective as an antifungal.
- composition VI Field tests (composition VI)
- the composition V 1 makes it possible to significantly reduce the first mildew infestations on the leaves and bunches compared to a control.
- the dose of 31/ha improves efficiency compared to the lower doses 1 and 2 1/ha.
- the efficiency level reaches 60% on leaves and bunches.
- the percentage (%) is a volume percentage.
- 0.17% indicates that 1.7mL of composition VI was dissolved in 998.3 rnL of water.
- the solution tested contains 0.20% of composition VI.
- compositions obtained from composition V 1 had different pHs, as indicated in Table 18 below.
- the percentages (%) indicated are volume percentages.
- compositions V9, VIO, GAST 1 and GAST 2 were also tested.
- the values of EC50 and EC95 on the different pathogens were determined in vitro as previously indicated. The results are grouped in the following table 20.
- the EC correspond to the mass percentage of VIO composition diluted in water to obtain respectively a 50% or 95% reduction in the growth of the pathogen.
- Plasmopara It has proven effective against Plasmopara viticola and grape powdery mildew (Erysiphe necator) in vivo at dilutions in water at 0.05% or 2% by weight of a stock solution containing 10% by weight of the composition V9 shown in Table 19.
- the GAST 1 and GAST 2 compositions are grouped in the following table 21.
- the mass percentage refers to the compositions described in Table 19, which are diluted in water. For the mass percentage of composition indicated, an effectiveness of 100% in vitro is obtained.
- the GAST 1 and GAST2 compositions are preferably used to treat seeds.
- Mo designates sodium molybdate
- Bo designates boron ethanolamine
- Plasmopara viticola at concentrations higher than that in which they are found in the composition of the invention.
- the AUDCP trapezoidal area
- the method used is that of Campbell and Madden published in 990.
- DSI stands for Disease Symptom Intensity, the intensity of disease symptoms.
- DPI corresponds to Day Post Inoculation, the number of days following inoculation.
- Table 25 The results in Table 25 show that compositions VI and V9 used at 2% by weight in water are very effective on vines in vivo against vine powdery mildew (Erysiphe necator).
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Abstract
Description
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MA71610A MA71610A (fr) | 2022-07-27 | 2023-07-26 | Composition antifongique pulverisable utilisable en agriculture- procede et utilisation associes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2207712A FR3138264B1 (fr) | 2022-07-27 | 2022-07-27 | Composition antifongique pulverisable utilisable en agriculture- procede et utilisation associes |
| PCT/FR2023/051169 WO2024023446A1 (fr) | 2022-07-27 | 2023-07-26 | Composition antifongique pulverisable utilisable en agriculture- procede et utilisation associes |
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| EP4561356A1 true EP4561356A1 (fr) | 2025-06-04 |
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| EP23752007.7A Pending EP4561356A1 (fr) | 2022-07-27 | 2023-07-26 | Composition antifongique pulverisable utilisable en agriculture- procede et utilisation associes |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20260076372A1 (fr) |
| EP (1) | EP4561356A1 (fr) |
| AU (1) | AU2023314225A1 (fr) |
| CA (1) | CA3260418A1 (fr) |
| CL (1) | CL2025000167A1 (fr) |
| FR (1) | FR3138264B1 (fr) |
| MA (1) | MA71610A (fr) |
| MX (1) | MX2025000961A (fr) |
| WO (1) | WO2024023446A1 (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2204248C1 (ru) * | 2002-04-22 | 2003-05-20 | Чувашский государственный университет им. И.Н.Ульянова | Средство для защиты и лечения поврежденных фруктовых и декоративных деревьев |
| US7641920B2 (en) * | 2004-10-05 | 2010-01-05 | Sartec Corporation | Methods and compositions for maintaining or enhancing feeding characteristics in post-receiving stressed animals |
| AR060980A1 (es) * | 2006-05-29 | 2008-07-23 | Praktijkonderzoek Plant & Omge | COMPOSICIoN PARA EL CONTROL DE ENFERMEDADES FOLIARES. |
| FR3093893B1 (fr) * | 2019-03-21 | 2021-09-17 | Timab Magnesium | Hydroxyde de magnésium comme fongicide de contact en agriculture |
-
2022
- 2022-07-27 FR FR2207712A patent/FR3138264B1/fr active Active
-
2023
- 2023-07-26 CA CA3260418A patent/CA3260418A1/fr active Pending
- 2023-07-26 US US18/997,579 patent/US20260076372A1/en active Pending
- 2023-07-26 WO PCT/FR2023/051169 patent/WO2024023446A1/fr not_active Ceased
- 2023-07-26 MA MA71610A patent/MA71610A/fr unknown
- 2023-07-26 AU AU2023314225A patent/AU2023314225A1/en active Pending
- 2023-07-26 EP EP23752007.7A patent/EP4561356A1/fr active Pending
-
2025
- 2025-01-20 CL CL2025000167A patent/CL2025000167A1/es unknown
- 2025-01-23 MX MX2025000961A patent/MX2025000961A/es unknown
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| Publication number | Publication date |
|---|---|
| AU2023314225A1 (en) | 2025-01-16 |
| MA71610A (fr) | 2025-05-30 |
| FR3138264B1 (fr) | 2025-06-27 |
| WO2024023446A1 (fr) | 2024-02-01 |
| CL2025000167A1 (es) | 2025-05-02 |
| CA3260418A1 (fr) | 2024-02-01 |
| US20260076372A1 (en) | 2026-03-19 |
| MX2025000961A (es) | 2025-03-07 |
| FR3138264A1 (fr) | 2024-02-02 |
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