EP4447671A1 - Dispositifs contenant des ingrédients actifs vis-à-vis des plantes appliqués sur le sol ou les parties aériennes des plantes - Google Patents
Dispositifs contenant des ingrédients actifs vis-à-vis des plantes appliqués sur le sol ou les parties aériennes des plantesInfo
- Publication number
- EP4447671A1 EP4447671A1 EP22847554.7A EP22847554A EP4447671A1 EP 4447671 A1 EP4447671 A1 EP 4447671A1 EP 22847554 A EP22847554 A EP 22847554A EP 4447671 A1 EP4447671 A1 EP 4447671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formulation according
- weight
- plants
- trees
- ethephon
- 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
-
- 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
-
- 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
- A01N25/10—Macromolecular compounds
-
- 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
-
- 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
-
- 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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
Definitions
- the field of the present invention is that of devices containing active ingredients with respect to plants applied to the soil or the aerial parts (foliar system or trunk) such as, for example, stimulants, fertilizers, pesticides, fungicides or more nutrients.
- Improper use of these products in liquid or solid form causes adverse effects on plants, environmental contamination, reduced soil fertility and damage to non-target organisms due to runoff processes, leaching or volatilization.
- Fertilizers using nanoparticles of nutrients have also been considered (Gomes, DG et al., Advances in Nano-Fertilizers and Nano-Pesticides in Agriculture, Woodhead Publishing, 2021, chap. 5, Pages 111-143).
- agents for stimulating plants for an agricultural application in particular rubber trees, such as Hevea brasiliensis.
- Rubber tree latex such as Hévéa brasiliensis
- Rubber tree latex is produced by the bark of the tree, in particular the laticiferous vessels. Cutting the bark in a process called bleeding allows the latex to ooze out, allowing it to be harvested and used as a raw material for the production of natural rubber. The latter is then transformed to be used in formulations of rubber articles, in particular tires.
- the amount of latex harvested depends on the frequency of tapping, the rate of latex production by the tree and the rate of latex regeneration in the tree. The good health of the tree, from which stems the quality of the bark and therefore the quality and quantity of latex produced, is therefore essential.
- GB1320870 (1973) more specifically describes a composition containing approximately 12% ethephon, 0.08% thickener, 1.6% ethanol, 75% water and palm oil (10%), while BR7506379 (1975) describes a formula composed of 10% ethephon and 90% of a mixture of almond oil, fat, propylene glycol and acetic anhydride.
- the majority of existing formulations applied to trees consist of diluting concentrated commercial solutions of ethephon in water at levels of the order of %.
- the frequency of stimulation and the concentration of stimulant must be modulated according to the time of year, the variety and the age of the tree and the method of bloodletting.
- the applicant has developed a formulation comprising, on the one hand, a biosourced, biodegradable, biocompatible polymer, showing a certain antimicrobial activity and, on the other hand, a stimulant, in particular ethephon.
- the material used is poly(glycerol sebacate) or PGS.
- PGS poly(glycerol sebacate) or PGS.
- the PGS material is harmless to the tree and the environment.
- This formulation contains a precise concentration of ethephon and allows a targeted application of a defined quantity of stimulant on the tree, limiting losses in environment due to application techniques and climatic conditions.
- This formulation also allows a controlled release of the stimulant over time, guaranteeing continuous and regular stimulation throughout the year, which not only limits bleeding frequencies, but also significantly stimulates frequencies. Finally, the controlled release allows a continuous stimulation of the rubber trees in the year, which allows a significant gain in productivity of the plots compared to the plots stimulated with the existing aqueous solutions.
- Figure 1 Photographs taken during the test of Example 1 (a. Composition after 5 days, b. Composition after 90 days)
- FIG. 2 Photographs taken during the test of Example 1 (a. Untreated shrub, b. Shrub treated with 2 g of the composition)
- biocompatible is meant: which is tolerated by the body, here in particular which is tolerated by plants.
- Biodegradable means: capable of being decomposed by living organisms.
- biodegradable copolyester means a biodegradable copolyester under the culture conditions, in particular of temperature and humidity, of the plants whose treatment falls within the scope of the present invention.
- biodegradable copolyester is understood to mean a copolyester that is more than 80% biodegradable in one year.
- biodegradable copolyester means a biodegradable copolyester according to standard EN13432.
- a phytosanitary product, plant protection product or phytopharmaceutical product is a substance or a mixture of substances of a chemical or biological nature (of natural or synthetic origin) used in agriculture, horticulture or silviculture to protect cultivated plants against bioaggressors (animal pests, plant pathogens, parasitic plants, weeds) or to optimize crops by promoting the growth of cultivated plants and by treating their environment (in particular the soil).
- Biostimulant means a substance which stimulates the nutrition processes of plants independently of the nutrients it contains with the aim of improving one or more of the following characteristics of plants or their rhizosphere: the efficiency of use of nutrients , abiotic stress tolerance, quality characteristics, availability of nutrients confined in the soil or rhizosphere (in accordance with EU Regulation 2019/1009).
- Biostimulants can be certain natural preparations of low concern (PNPP).
- PNPP natural preparations of low concern
- the PNPPs are:
- the invention relates to a controlled-release formulation
- a biocompatible and biodegradable copolyester obtainable by the polycondensation of a diacid and a polyol, and a phytosanitary active principle and/or a biostimulant.
- the formulation according to the invention comprises a biocompatible and biodegradable copolyester capable of being obtained by the polycondensation of a diacid and a polyol.
- polyol it is necessary to understand within the meaning of the present invention an organic molecule comprising at least two alcohol functions.
- the copolyesters according to the invention are polyesters composed of at least two different diacid and polyol units.
- the diacid is chosen from aliphatic carboxylic diacids, preferably (C3-C2o)alkyldiacids, more preferably (Cs-Cis)alkyldiacids.
- the diacids are preferably chosen from diacids having two terminal carboxylic acid functions.
- the diacid is sebacic acid.
- the polyol is chosen from diols and triols, preferably from triols, preferably the polyol is glycerol.
- the biocompatible and biodegradable copolyester is advantageously poly(glycerol sebacate) (PGS) and its derivatives, more preferably poly(glycerol sebacate) of general formula below.
- the polyol monomer: diacid monomer ratio is advantageously between 0.3:1 and 1:0.3.
- Poly(glycerol sebacate) can be obtained using a two-step synthesis: a first esterification step and a second polycondensation step, and optionally a 3rd crosslinking step.
- the first step consists of an esterification reaction between an acid function of sebacic acid and an alcohol function of glycerol.
- the terminal alcohol functions react preferentially.
- the second step is to grow the chains to obtain a PGS resin.
- the biocompatible and biodegradable copolyester is biobased. In this case, it can be obtained from renewable raw materials from biomass.
- the formulation according to the invention advantageously comprises 1% to 99% by weight, preferably 2% to 98% by weight, more preferably 3% to 96%, particularly preferably 5% to 95% by weight, of a biocompatible and biodegradable copolyester capable of being obtained by the polycondensation of a diacid and a polyol.
- the biocompatible and biodegradable copolyester is in elastomeric form, i.e. which has elastic properties after crosslinking.
- the formulation advantageously comprises residual monomers which have not been integrated into the chains of the biocompatible and biodegradable copolyester (diacid and/or polyol), at contents ⁇ 90% by weight, of more preferably ⁇ 80% by weight, more preferably ⁇ 70% by weight.
- the formulation according to the invention comprises a phytosanitary active principle and/or a biostimulant chosen from the group consisting of stimulants, fertilizers, pesticides, fungicides, nutrients, bactericides, insecticides, growth regulators.
- a biostimulant chosen from the group consisting of stimulants, fertilizers, pesticides, fungicides, nutrients, bactericides, insecticides, growth regulators.
- the formulation according to the invention comprises a phytosanitary active principle and/or a biostimulant which is a precursor of ethylene, preferentially ethephon.
- the formulation according to the invention relates to a formulation in which the biocompatible and biodegradable copolyester is poly(glycerol sebacate) (PGS) and the phytosanitary active principle and/or a biostimulant is ethephon.
- PGS poly(glycerol sebacate)
- the formulation according to the invention advantageously comprises from 1% to 99% by weight, preferably from 2% to 98% by weight, in a particularly preferred manner 5% to 95% by weight, of a phytosanitary active principle and/or a biostimulant.
- the formulation according to the invention advantageously comprises 5% to 95% by weight of ethephon.
- the formulation according to the invention advantageously comprises from 0.1% to 99% by weight, preferably from 0.5% to 95% by weight, particularly preferably 1% to 90% by weight of water.
- the formulation according to the invention may comprise one or more additives chosen from the group consisting of stabilizers, compatibilizers, shaping agents, release regulators of the active principle, antioxidants.
- the formulation according to the invention can be in the form of a paste, a patch, granules or a solution to be propelled, preferably in the form of a paste.
- the formulation according to the present invention advantageously comprises 20% to 80% by weight, preferably 30% to 70% by weight, more preferably 40% to 70 % by weight of a biocompatible and biodegradable copolyester obtainable by the polycondensation of a diacid and a polyol.
- the formulation according to the present invention advantageously comprises 1% to 50% by weight, preferably 2% to 40% by weight, more preferably 3% to 30% by weight of a biocompatible and biodegradable copolyester obtainable by the polycondensation of a diacid and a polyol.
- the formulation according to the invention advantageously comprises 50% to 99% by weight, preferably 60% to 98% by weight, more preferably 70% to 97% of a biocompatible and biodegradable copolyester obtainable by the polycondensation of a diacid and a polyol.
- the formulation according to the present invention is in the form of a paste, it advantageously comprises from 1% to 50% by weight, preferably from 2% to 40% by weight, particularly preferably 3% to 30% by water weight.
- the formulation according to the present invention when in the form of a solution to be propelled, it advantageously comprises from 50% to 99% by weight, preferably from 60% to 98% by weight, particularly preferably from 70% to 97% by weight of water.
- the formulation according to the present invention when in the form of granules, it advantageously comprises from 0.1% to 30% by weight, preferably from 0.2% to 20% by weight, particularly preferably from 0.3 % to 10% by weight of water.
- copolyester with the phytosanitary active principle and/or the stimulating biostimulant can be employed. Mention may be made, without limitation, of a mixture of molten copolyester with the phytosanitary active principle and/or the biostimulant in solution, for example in aqueous solution.
- This mixture can be produced in a conventional reactor stirred at relatively mild temperatures to limit the risks of degradation of the phytosanitary active principle and/or of the biostimulant, preferably ⁇ 120°C, preferably ⁇ 110°C, preferably ⁇ 100°C , using conventional spindles or spindles of the shearing ultraturax type while limiting the contact time.
- the mixing process can be batch, semi-batch or continuous.
- the formulation according to the invention is intended to be applied to the trunk of shrubs and trees, in particular when it is in the form of a paste, patch or solution to be propelled.
- Another object of the invention relates to a process for treating plants comprising the application to at least one part of the plants, preferably one or more aerial part(s), or to the soil of a formulation according to the 'invention.
- the formulation according to the present invention is in the form of a paste, a patch or a solution to be propelled, it is preferably applied to at least one part of the plants, preferably one or more part(s) aerial(s).
- the trees or shrubs are preferably chosen from the group consisting of rubber trees, vines, olive trees, fruit trees and ornamental plants, preferably rubber trees.
- the formulation according to the present invention is in the form of a paste, it is preferentially sticky and can be spread with a spatula or with an application device of the mastic gun type, allowing application of a controlled mass on the plant.
- a device composed of a “hard” layer in contact with a “sticky” layer of the patch type pre-cut to adequate dimensions can also be envisaged. It can be attached to one or more aerial part(s) of the plant, for example on the trunk or for example on the leaves or the fruits.
- the formulation according to the present invention When the formulation according to the present invention is in the form of granules, it will be applied to the ground.
- the PGS samples were dissolved at a concentration of approximately 1.5 g.L'1 in THF, then stirred for 2 hours before being injected.
- the analytical conditions used are described in the table below:
- the analyzable mass range is between 162 g/mol and 7,500,000 g/mol.
- the number-average molecular mass (Mn) is expressed in g/mol in PS equivalent, likewise the weight-average molecular mass (Mw) is expressed in g/mol in PS equivalent.
- the dispersity D is defined by the relation Mw/Mn.
- the free ethephon is analyzed by 13 C NMR.
- a Bruker AVANCE III 500 MHz spectrometer fitted with a 5 mm z-gradient BBFO cryogenic probe is used to acquire samples solvated in acetone-d6 with calibration at 29.9 ppm.
- the ethephon solution used is a concentrated aqueous commercial solution (Ethrel®) around 480 g/L of ethephon, i.e. around 42% by mass of ethephon.
- EXAMPLE 1 Aging test of the formulation according to the invention without active principle on rubber trees (Hevea brasiliensis)
- a sample of PGS was prepared by mixing 3 molar equivalents of glycerol (230 g) with 1 molar equivalent of sebacic acid (169 g) and water (72 g) in a 500 mL reaction vessel topped with a column distillation unit and a condenser connected to a distillate recipe. The mixture is brought to 130° C. for 24 hours at atmospheric pressure under an inert atmosphere (N2), the water is recovered in the distillate recipe. The middle is finally carried under vacuum (5 mbar) at the same temperature for one hour.
- compositions without active principle on a rubber tree trunk The PGS obtained is either used as it is, or mixed with water in a stirred reactor at 30° C, for 15 min. Preparations with water contents of 0.1% and 5% were thus obtained.
- the composition is in the form of a paste at room temperature. About 2 g of the composition were finally deposited on the trunk of a rubber tree using a spatula in a representative medium (temperature, hygrometry, watering).
- a sample of PGS was prepared by mixing 3 molar equivalents of glycerol (230 g) with 1 molar equivalent of sebacic acid (169 g) and water (72 g) in a 500 mL reaction vessel topped with a column distillation unit and a condenser connected to a distillate recipe. The mixture is brought to 130° C. for 24 hours at atmospheric pressure under an inert atmosphere (N2), the water is recovered in the distillate recipe. The middle is finally carried under vacuum (5 mbar) at the same temperature for one hour.
- the PGS obtained (9.1 g) is placed in a reactor brought to 30° C. for 15 min with stirring.
- An aqueous solution of ethephon concentrated at 480 g/L, i.e. 42% by weight of ethephon, is added drop by drop to the medium (1.9 mL, i.e. 0.9 g of ethephon).
- the composition is stirred for an additional 5 minutes in order to obtain a homogeneous paste, containing 8% by mass of ethephon, 11% by mass of water and 81% by mass of PGS.
- composition is finally applied with different amounts to the trunks of the calamondins bearing green fruits with a spatula (2 g, or approximately 160 mg of ethephon and 5 g, or approximately 400 mg of ethephon).
- Control 1 shock without treatment
- Control 2 composition above deposited on an inert surface (aluminum plate).
- the ethephon content decreases significantly after 15 days in the paste applied to the shrubs (decrease in the concentration of more than 80%), much less in Control 2 (composition deposited on an inert surface, with a decrease in the concentration of ethephon less than 50%).
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Fertilizers (AREA)
- Cultivation Of Plants (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2113693A FR3130508B1 (fr) | 2021-12-16 | 2021-12-16 | Dispositifs contenant des ingrédients actifs vis-à-vis des plantes appliqués sur le sol ou les parties aériennes des plantes |
| PCT/FR2022/052377 WO2023111468A1 (fr) | 2021-12-16 | 2022-12-15 | Dispositifs contenant des ingrédients actifs vis-à-vis des plantes appliqués sur le sol ou les parties aériennes des plantes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4447671A1 true EP4447671A1 (fr) | 2024-10-23 |
Family
ID=82019641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22847554.7A Pending EP4447671A1 (fr) | 2021-12-16 | 2022-12-15 | Dispositifs contenant des ingrédients actifs vis-à-vis des plantes appliqués sur le sol ou les parties aériennes des plantes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250151718A1 (fr) |
| EP (1) | EP4447671A1 (fr) |
| FR (1) | FR3130508B1 (fr) |
| WO (1) | WO2023111468A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3147685A1 (fr) * | 2023-04-14 | 2024-10-18 | Compagnie Generale Des Etablissements Michelin | Dispositifs contenant des ingrédients actifs vis-à-vis des plantes |
| FR3149897A1 (fr) * | 2023-06-16 | 2024-12-20 | Compagnie Generale Des Etablissements Michelin | Procédé de stimulation de la production de latex |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1281524A (en) | 1968-10-22 | 1972-07-12 | Rubber Res Inst Of Malaya | A method of stimulation of rubber yield in hevea brasiliensis |
| PH9673A (en) | 1970-11-02 | 1976-02-10 | J Esposito | Latex stimulant and method of use |
| GB1498948A (en) | 1974-10-02 | 1978-01-25 | Malaysia Rubber Res Inst | Stimulation of rubber yield from hevea brasiliensis |
| DE19645842A1 (de) * | 1996-11-07 | 1998-05-14 | Bayer Ag | Pflanzenbehandlungsmittel |
| WO2013158620A1 (fr) * | 2012-04-16 | 2013-10-24 | North Carolina State University | Système relevant de la nanotechnologie pour applications agricoles |
| EP3149067B1 (fr) * | 2014-05-30 | 2021-03-17 | The Secant Group, LLC | Préparations de matériaux polymères à médiation par l'eau |
-
2021
- 2021-12-16 FR FR2113693A patent/FR3130508B1/fr active Active
-
2022
- 2022-12-15 EP EP22847554.7A patent/EP4447671A1/fr active Pending
- 2022-12-15 US US18/719,998 patent/US20250151718A1/en active Pending
- 2022-12-15 WO PCT/FR2022/052377 patent/WO2023111468A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3130508A1 (fr) | 2023-06-23 |
| WO2023111468A1 (fr) | 2023-06-22 |
| FR3130508B1 (fr) | 2026-03-06 |
| US20250151718A1 (en) | 2025-05-15 |
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