EP4021181A1 - Formulation fumigante pour application en goutte a goutte - Google Patents

Formulation fumigante pour application en goutte a goutte

Info

Publication number
EP4021181A1
EP4021181A1 EP20775693.3A EP20775693A EP4021181A1 EP 4021181 A1 EP4021181 A1 EP 4021181A1 EP 20775693 A EP20775693 A EP 20775693A EP 4021181 A1 EP4021181 A1 EP 4021181A1
Authority
EP
European Patent Office
Prior art keywords
composition
weight
formulation
relative
drip
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
Application number
EP20775693.3A
Other languages
German (de)
English (en)
French (fr)
Inventor
Patrick Charles
Thierry FOUILLET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema France SA
Original Assignee
Arkema France SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Arkema France SA filed Critical Arkema France SA
Publication of EP4021181A1 publication Critical patent/EP4021181A1/fr
Pending legal-status Critical Current

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
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M13/00—Fumigators; Apparatus for distributing gases
    • 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
    • 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
    • A01N25/02—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 liquids as carriers, diluents or solvents
    • A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
    • 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
    • A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
    • A01N41/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom not containing sulfur-to-oxygen bonds, e.g. polysulfides

Definitions

  • the present invention relates to the field of fumigation of soils and / or substrates, and more particularly to a fumigant formulation suitable for drip administration, as well as its use.
  • the present invention also relates to a method of pesticide treatment by fumigation of soils and / or substrates using such a formulation, administered dropwise.
  • Fumigants are well-known chemicals that inhibit or kill plant destructive and / or pest organisms such as nematodes, fungi, insects, weeds and others. Fumigants are most commonly presented as volatile liquids, solids or gases. Fumigants have the property of diffusing into the soil and / or the substrate to be treated in the form of a gas once administered.
  • fumigants are most often deposited on the ground or introduced into the ground by injection.
  • two techniques are commonly used to administer fumigants, namely:
  • drip fumigation is ease of operation, flexibility of use and low toxicity since the delivery vehicle (the solvent) of the fumigant is water.
  • dimethyl disulfide also called DMDS
  • DMDS dimethyl disulfide
  • fumigants used are sometimes poorly soluble in water.
  • the drip administration can then pose problems of dosage of the fumigant on the plot to be treated. Due to its low solubility, the fumigant is not distributed evenly and may accumulate in some areas while other areas will not. sufficiently processed.
  • fumigants, including DMDS can accumulate more or less in certain regions of the soil or substrate, resulting in for crops, a local risk of over-dosage or, conversely, of under-dosage.
  • fumigant can clog drippers and alter dripper lines if used alone, which is problematic both in terms of the effectiveness of the fumigation and the equipment used. Indeed, some fumigants, in particular DMDS, are not compatible with most plastics.
  • One of the objectives of the present invention is therefore to provide a fumigant formulation suitable for drip administration.
  • Another objective of the present invention is to provide a stable fumigant formulation, in particular in the form of an emulsion.
  • Another objective of the present invention is to provide a method of pesticide treatment by fumigation by drip which is efficient and allowing a homogeneous distribution of the fumigant on the soil and / or the substrate to be treated, with an improved implementation.
  • composition C at least 80% by weight, preferably at least 90% by weight, of at least one fumigant compound relative to the total weight of composition C;
  • composition C between 0.1% and 20%, preferably between 1% and 10%, by weight of at least one surfactant relative to the total weight of composition C;
  • composition C optionally an odor-masking agent, for example between 0.1% and 0.5% by weight of an odor-masking agent relative to the total weight of composition C.
  • an odor-masking agent for example between 0.1% and 0.5% by weight of an odor-masking agent relative to the total weight of composition C.
  • Formulation F according to the invention is preferably an emulsion, more preferably a microemulsion.
  • the particles of the emulsion have a size less than or equal to 0.1 ⁇ m.
  • Said formulation F can in particular comprise between 0.10% and 0.30%, preferably between 0.15% and 0.25% by volume of said composition C, relative to the total volume of water of formulation F.
  • Said formulation F may comprise between 0.15% and 0.40% by volume of said composition C, relative to the total volume of water of formulation F.
  • the present invention thus relates to a formulation F comprising water and a composition C, said composition C comprising:
  • composition C at least 80% by weight, preferably at least 90% by weight, of at least one fumigant compound relative to the total weight of composition C;
  • composition C between 0.1% and 20% by weight, preferably between 1% and 10% by weight, of at least one surfactant relative to the total weight of composition C;
  • formulation F being characterized in that the volume ratio [composition C] / [water] is between 0.10 / 100 and 0.40 / 100 (ie between 0.0010 and 0.004), preferably between 0.10 / 100 and 0.30 / 100 (ie between 0.0010 and 0.003), and even more preferably between 0.15 / 100 and 0.25 / 100 (ie between 0.0015 and 0.0025).
  • the emulsifiable concentrate corresponds to composition C as defined above. It can correspond quite preferably to the compositions of dimethyl disulphide marketed by the company Arkema under the names Paladin® EC, Accolade® EC and Atomal® 13. According to one embodiment, said composition C does not comprise water. .
  • Composition C can in particular comprise at least one fumigant compound, preferably DMDS, in an amount at least strictly greater than 90% by weight, preferably between strictly greater than 90% and 95% by weight, relative to the total weight. of composition C.
  • at least one fumigant compound preferably DMDS
  • composition C comprises:
  • composition C at least 90% by weight, for example between 90% and 95% by weight, of dimethyl disulphide relative to the total weight of composition C;
  • composition C between 1% and 10% by weight of at least one surfactant relative to the total weight of composition C;
  • composition C optionally between 0.1% and 0.5% by weight of an odor-masking agent relative to the total weight of composition C.
  • Composition C comprises in particular, or even consists of:
  • composition C - at least 90% by weight of fumigant, for example dimethyl disulphide, relative to the total weight of composition C; - between 1% and 10%, preferably between 1% and 6%, by weight of at least one (C 10 -C 13 ) alkylbenzenesulphonate relative to the total weight of composition C; and
  • composition C optionally between 0.1% and 0.5% by weight of an odor-masking agent relative to the total weight of composition C.
  • Formulations F and compositions C such as according to the invention can be prepared according to methods well known to those skilled in the art. For example, the following method can be used:
  • composition C preparation of composition C by simple mixing of its components, optionally with stirring and heating, the order of addition of the components not influencing composition C; then
  • Formulation F can also be presented in a ready-to-use form.
  • pesticide treatment in particular a treatment having at least one action chosen from nematicide, fungicide, insecticide, herbicide and bactericide, in particular against phytopathogenic organisms.
  • substrates is understood to mean in particular potting soil, peat, rock wool, or other supports commonly used for the cultivation of plants and in particular soilless cultivation.
  • Fumigant compounds are known and widely described in the literature. Fumigants must in particular meet three conditions in order to be able to be used practically in disinfecting soils and / or substrates:
  • R and R ′ radicals mention may be made of methyl, propyl, allyl and 1-propenyl radicals.
  • n 0, that is to say the compounds corresponding to the formula (1 ’):
  • a very particularly preferred compound according to the invention is dimethyl disulfide (DMDS).
  • two or more fumigants can be used, as a mixture or separately, in an alternating or sequenced manner.
  • they can either:
  • formulation F can be used according to the invention in combination or in addition to other fumigants.
  • two or more fumigants for example having complementary or synergistic activities chosen from: 1, 3-dichloropropene, sulfuryl fluoride (S0 2 F 2 ), phosphine, iodide methyl, chloropicrin (CI 3 C-NO 2 ), Metam-sodium (CH 3 -NHCS 2 Na), sodium tetrathiocarbonate (Na 2 CS 4 ), MITC (CH 3 -NCS), Dazomet ( MITC generator), AITC (Allyl Iso thio cyanate), EDN (ethanedinitrile) and the compounds of formula (1), and in particular dialkyl disulfides, for example DMDS.
  • complementary or synergistic activities chosen from: 1, 3-dichloropropene, sulfuryl fluoride (S0 2 F 2 ), phosphine, iodide methyl, chloropicrin (CI 3 C-NO 2 ), Metam-sodium (CH 3 -NHCS 2 Na),
  • formulation F according to the invention comprises DMDS and at least one other fumigant chosen from the group consisting of:
  • DMDS can be combined with 1, 3-dichloropropene, chloropicrin (CI 3 C-NO 2 ), Metam-sodium (CH 3 -NHCS 2 Na), AITC (Allyl Iso thio cyanate ) or EDN (ethanedinitrile); for example the DMDS can be associated with the EDN.
  • DMDS can be combined with chloropicrin.
  • the fumigants according to the invention can also be used alternately or in addition to new pesticides or biocides, for example as described in application PCT / US2019 / 016448.
  • sodium hypochlorate hydrogen peroxide (H 2 O 2 ), or a peroxide source such as peracetic acid, sodium peroxide, potassium oxide, potassium peroxide.
  • a peroxide source such as peracetic acid, sodium peroxide, potassium oxide, potassium peroxide.
  • Such alternate or complementary treatment can be carried out pre- or post-application of formulation F as according to the invention, preferably post-treatment.
  • formulations F comprising DMDS as the sole fumigant.
  • the formulations F according to the invention can be obtained by adding at least one surfactant (s) to the fumigant compound (s), then by adding to the mixture obtained a certain quantity of water so as to obtain an emulsion, preferably a microemulsion.
  • the formulations F according to the invention are aqueous emulsions (having water as solvent).
  • surfactants of predominantly hydrophilic nature, that is to say those having an HLB ("Hydrophilic Lipophilie Balance") greater than or equal to 8, which can be of anionic nature, cationic, nonionic or amphoteric.
  • HLB Hydrophilic Lipophilie Balance
  • anionic surfactants there may be mentioned:
  • alkyl-, aryl- or alkylaryl-sulfonic acids fatty acids at basic pH, sulfosuccinic acid or alkyl, dialkyl, alkylaryl or polyoxyethylene-alkylaryl sulfosuccinic acid;
  • alkali metal or alkaline earth metal salts of alkylarylsulfuric, alkylarylphosphoric, alkylarylsulfoacetic acids, as well as their alkoxylated derivatives are included in the alkylarylsulfuric, alkylarylphosphoric, alkylarylsulfoacetic acids, as well as their alkoxylated derivatives.
  • the cationic surfactants which can be used are, for example, those of the family of quaternary alkylammonium, sulfoniums or fatty amines at acid pH, as well as their alkoxylated derivatives.
  • nonionic surfactants mention may be made of alkoxylated alkylphenols, alkoxylated alcohols, alkoxylated fatty acids, fatty esters of glycerol or fatty derivatives of sugar.
  • amphoteric surfactants which can be used are, for example, alkyl-betaines or alkyl-taurines.
  • the preferred surfactants for the preparation of formulations F according to the invention are compounds based on alkyl-benzene-sulfonate and / or on alkoxylated alkyl-phenol. More particularly, the (C 10 -C 13 ) alkyl-benzene-sulfonates (also called salts of C 10 -C 13 alkyl derivatives of benzene sulfonic acid) are used, for example the calcium salts of C alkyl derivatives 10 -C 13 of benzene sulfonic acid (CAS number 1335202-81-7) and in particular their mixtures in any proportion.
  • Said (C 10 -C 13 ) alkyl-benzene-sulfonates may or may not be mixed with other surfactants, for example with nonionic surfactants, optionally in the presence of an organic solvent such as 2- ethylhexan-1-ol.
  • the surfactants used can be in the form of commercial compositions, for example Atlox TM 4851 B marketed by Croda, T-Mulz® TE-CP marketed by Harcros Chemicals.
  • Odor masking agent Some fumigants have a strong, unpleasant or even aggressive odor.
  • DMDS has a strong and aggressive odor due in part to the presence of strongly odorous impurities and in part to the garlic and ethereal odor intrinsic to this molecule. The same is true for most organic sulphides.
  • the oxides of these organic sulphides in particular DMSO, exhibit a less aggressive odor.
  • this odor can be unpleasant and annoying for the end user.
  • formulation F can also include an odor masking agent.
  • scent masker Any type of known scent masker can be used.
  • odor-masking agent is meant a compound or a composition comprising several compounds making it possible to decrease, eliminate or mask the odor of the fumigant used. Mention may for example be made of chloropicirin, generally used to odorize methyl bromide.
  • Said odor-masking agent can comprise at least one mono-ester, at least one di- and / or tri-ester, at least one alcohol, at least one ketone and optionally at least one terpene.
  • the odor masking agent comprises: a1) from 1% to 40% by weight of at least one mono-ester; a2) from 10% to 70% by weight of at least one di- and / or tri-ester; a3) from 1% to 30% by weight of at least one alcohol; a4) from 0.5% to 20% by weight of at least one ketone of formula R a -CO-R b , in which R a represents a hydrocarbon chain comprising from 1 to 6 carbon atoms, linear or branched, optionally comprising one or more unsaturation (s) in the form of double bond (s), and R b represents a cyclic hydrocarbon chain or else a linear or branched hydrocarbon chain optionally but preferably substituted by a cyclic structure, R b comprising of
  • the percentages of a1, a2, a3, a4 and a5 are percentages by weight expressed relative to the total weight of the odor-masking agent.
  • ppm means parts per million by weight.
  • Said odor masking agent can therefore comprise from 1% to 40%, preferably from 2% to 35%, more preferably from 5% to 30% by weight, relative to the total weight of the odor masking agent , of at least one mono-ester mentioned under a1).
  • esters of saturated or unsaturated C2-C20 acids such as acetates, propionates, butyrates, methylbutyrates, pentanoates, hexanoates, heptanoates, caproates, oleates, linoleates, linolenates, ethyl, propyl, butyl, pentyl, 2-methylbutyl, iso-amyl, hexyl, benzyl, phenylethyl, menthyl, carvyl, and others , as well as their mixtures.
  • iso-amyl acetate More particularly preferred are iso-amyl acetate, hexyl acetate, 2-methylbutyl butyrate, iso-amyl butyrate, benzyl acetate, phenylethyl acetate and mixtures thereof. compounds.
  • the odor-masking agent may also comprise at least one di- and / or tri-ester a2), in an amount of between 10% and 70% by weight, preferably between 15% and 65% by weight, preferably still between 20% and 60% by weight, relative to the total weight of the odor-masking agent. Mention may be made, in a nonlimiting manner, of at least one di- and / or tri-ester chosen from ortho-phthalates, such as diethyl ortho-phthalate; citrates, such as triethyl citrate; and malonates, such as diethyl malonate.
  • ortho-phthalates such as diethyl ortho-phthalate
  • citrates such as triethyl citrate
  • malonates such as diethyl malonate.
  • the odor-masking agent may also comprise from 1% to 30%, preferably from 5% to 25% by weight relative to the total weight of the odor-masking agent, of at least one alcohol a3), advantageously at least one monoalcohol comprising from 1 to 30 carbon atoms, preferably from 6 to 20 carbon atoms, more preferably from 8 to 11 carbon atoms, said carbon atoms forming a linear or branched chain optionally comprising one or more unsaturation (s) in the form of double bond (s), and optionally comprising a 5 or 6-membered cyclic structure, saturated, or totally or partially unsaturated.
  • at least one alcohol a3 advantageously at least one monoalcohol comprising from 1 to 30 carbon atoms, preferably from 6 to 20 carbon atoms, more preferably from 8 to 11 carbon atoms, said carbon atoms forming a linear or branched chain optionally comprising one or more unsaturation (s) in the form of double bond (s), and optionally comprising a 5 or
  • the alcohols defined above are preferably monoalcohols, the hydroxyl function preferably being carried by a sp2 carbon atom. It should be understood that the hydroxyl function can also be carried by a carbon atom included in a cyclic structure as defined above.
  • the ketone or ketones indicated under a4) above are chosen, by way of nonlimiting examples, and preferably from damascones, damascenones, ionones, irisones, methyl ionones, rambinone (CAS No. 5471-51-2), and others, as well as mixtures thereof.
  • the amount of ketone (s) is advantageously between 0.5% and 20%, preferably between 1% and 10% by weight relative to the total weight of the odor-masking agent.
  • the odor-masking agent can optionally also comprise up to 20%, preferably from 1% to 10% by weight relative to the total weight of the odor-masking agent, of at least one terpene.
  • terpenes As examples of terpenes, indicated under a5), which can be used, there may be mentioned, without limitation, terpinenes, myrcene, limonene, terpinolene, pinenes, sabinene, camphene, and others, mixtures of two or more of them, as well as essences based on terpenes, in particular those comprising these ingredients.
  • the odor-masking agent which can be used in the context of the present invention may comprise, in minor amounts, other agents (fragrances) usually used in the field of perfumery, and in particular one or more compounds carrying cyclic aldehyde and / or ketone function (s), among which there may be mentioned, without limitation, géranial, additionral, citronellal, menthone, iso-menthone, 1, 8-cineole, ascaridole , flavonone, and mixtures thereof.
  • the odor-masking agent can, if necessary, or if necessary also include one or more additives commonly used in the field.
  • additives can for example be chosen from, and without limitation, solvents, pigments, dyes, preservatives, biocides, and others.
  • the solvents very particularly preferred examples are alcohols, ethers, esters and glycols.
  • the solvent is chosen from diethyl phthalate, ethylene glycol, propylene glycol, di-ethylene glycol, dipropylene glycol, polyethylene glycols, polypropylene glycols, and their mixtures, and of even more advantageously from diethyl phthalate, dipropylene glycol, and mixtures thereof.
  • a typical odor-masking agent composition includes (by weight based on the total weight of the odor-masking agent):
  • a1 from 5% to 30% by weight of at least one mono-ester a1), chosen from iso-amyl acetate, ethyl-2-methyl butyrate, iso-amyl butyrate, l phenylethyl acetate, ethyl caproate, benzyl acetate, hexyl acetate and mixtures thereof;
  • Component a1) 16.00% comprising benzyl acetate, hexyl acetate, iso-amyl acetate, phenylethyl acetate, ethyl caproate, ethyl 2-methyl butyrate
  • Component a2) 50.00% comprising diethyl malonate, diethyl phthalate
  • Component a3) 20.60% comprising phenylethyl alcohol, citronellol, geraniol, linalool, cis-3-hexenol
  • Component a4) 4.50% comprising 1- (4-hydroxyphenyl) butan-3-one, alpha-irisone Component a5): 7.00% orange terpenes Others: 1. 90% comprising citral, ethylmaltol, ethylmethyl phenylglycidate These compositions are given by way of example.
  • the present invention also relates to a method of pesticide treatment by fumigation of soils and / or substrates, in which formulation F as defined above is administered by dropwise.
  • the fumigation of soils and / or substrates according to the invention is useful for the cultivation of fruits, vegetables, flowers and ornamental plants, in particular for tomatoes, strawberries, melons, cucumbers, eggplants, peppers. , potatoes, carrots, pineapple, zucchini, watermelon, onions, garlic, vines, fruit trees and cut flowers.
  • Formulation F is particularly suitable for drip administration. It makes it possible to dissolve the fumigant and in particular the DMDS.
  • the fumigant is solubilized so stable, which prevents its accumulation in the drippers, which clogs them.
  • Formulation F is in particular stable for at least 30 minutes.
  • it makes it possible to obtain a homogeneous diffusion of the fumigant over the entire surface to be treated and over the entire duration of the fumigation, without an under or over dosage zone, which is obviously not desirable.
  • DMDS is used under the conditions of the invention, and in particular in the form of formulation F, with drip application, maximum efficiency can be obtained for this fumigant.
  • the treatment can be easily adapted by a person skilled in the art depending on the crop to be treated, the nature of the soil and / or the substrate and the climatic conditions.
  • Drip administration can be accomplished by any conventional drip irrigation system.
  • drip irrigation systems or devices also called trickle irrigation systems or micro-irrigation or drip systems
  • Irrigation such as liquid fertilizer to plants to be grown in the soil of agricultural land, plantations or other substrates.
  • these systems are also called drip fumigation systems when they deliver the fumigant formulation F according to the invention.
  • these systems include, for example, a supply and / or a reservoir for composition C as defined above and optionally a device for dosing said composition C.
  • composition C can be supplied by any means known per se, and for example from a reservoir containing it.
  • the reservoir can be equipped with a pump and advantageously with a plunging rod, as described in international application WO 2014/147034.
  • the drip application is most preferably carried out by a drip irrigation device comprising a device for dosing said composition C.
  • formulation F is advantageously prepared using the device for dosing by mixing. with water, where fumigation is to take place.
  • the dosage can be carried out using an Atex pump (pump for Explosive Atmosphere, for the use of flammable or easily flammable product) or a venturi system or a volumetric metering pump.
  • the metering is advantageously carried out using a volumetric metering pump, preferably a hydraulic volumetric proportional metering pump, preferably without electricity, such as those offered by the company Dosatron International® or by the company FLUIDEO®.
  • a volumetric metering pump preferably a hydraulic volumetric proportional metering pump, preferably without electricity, such as those offered by the company Dosatron International® or by the company FLUIDEO®.
  • a pump is for example described in application WO 2006/016032.
  • the dosage of formulation F is controlled by the flow of water and can therefore be constant throughout the duration of the fumigation.
  • the drip fumigation system may in particular include drip lines (or pipes) connected to a main supply line and the main supply line may be connected to the metering device as mentioned above.
  • the drip lines are spaced approximately 20 cm to 1.5 m from each other.
  • Each drip line is in particular equipped with drippers which can be spaced 10 cm to 50 cm from each other and can have a flow rate of between 0.5 and 4 L / hour.
  • the application time of formulation F according to the invention can be between 45 min and 5 h, preferably between 1 h and 2 h.
  • the quantity of water may be between 10 and 50 L / m 2 , preferably between 10 and 30 L / m 2 , for example approximately 20 L / m 2 of the surface to be treated.
  • the water pressure in the dripper lines can be between 0.2 and 3 bar, preferably between 1 and 1.5 bar.
  • the fumigation system according to the invention can be placed on the surface of the soil and / or the substrate to be treated or be buried in the earth, for example between 5 cm and 2 m deep, preferably between 5 cm and 80 cm deep.
  • All the lines comprising the drippers, or even the entire drip fumigation system as well as the soil and / or substrate to be treated can be covered with a barrier film (i.e. impermeable to the vapors of the (des) fumigant (s)) before application of formulation F.
  • a barrier film i.e. impermeable to the vapors of the (des) fumigant (s)
  • formulation F formulation F
  • barrier films such as SIF (“semi-impermeable film”), VIF (“virtually waterproof film”), or TIF (“totally waterproof film”) type films, are now used during the treatment of soils and / or substrates by fumigation.
  • Said barrier film can be a photocatalytic film as described in application WO 2013/030513 or a self-adhesive or tackifying film as described in application WO 2016/075392.
  • the films “BARRIER-FILM NFT54-195-1 / 2 CL2”, Film Accolade® and Film Paladin® marketed by Arkema can be used.
  • the present invention also relates to a kit for the fumigation of soils and / or substrates by drip comprising composition C as defined above, as well as a device for dosing said composition C, and optionally a drip device. drip as defined above (comprising in particular lines of drippers and a system for supplying water and composition C).
  • Said kit makes it possible to prepare, from composition C, formulation F according to the invention, by dosage, and optionally its application with the drip system.
  • Said kit can optionally comprise a barrier film as mentioned above.
  • Composition C is mixed with water.
  • Composition C consists of approximately:
  • Formulations F according to the invention make it possible to obtain good emulsification of DMDS in a stable manner. Up to a dose of about 0.25% by volume of composition C, a clear microemulsion is obtained which is stable for at least 30 minutes.
  • composition C Between> 0.25% and 0.4% by volume of composition C, an emulsion is obtained which becomes slightly cloudy and which remains stable for at least 30 minutes. For doses of composition C greater than 0.40% by volume, the emulsification is poor and the emulsion is not stable.
  • the test was carried out using an experimental design of 6 randomly selected plots, treated with 6 different treatments, with 4 tests per treatment.
  • the plot size was 50 m 2 and the amount of water used was 20 L / m 2 .
  • DMDS and / or metam sodium were applied with water through a drip irrigation system (DMDS with a Dosatron® pump and then metam sodium with an electric pump) one month before planting. eyelets. All the plots treated with DMDS were covered for 4 weeks with a completely impermeable film (TlF); the plot treated with metam sodium was covered with a polyethylene film.
  • composition C used consists of approximately:
  • metam sodium an aqueous solution (at 510 g / L of metam sodium) is used is injected into a stream of water. The injection of metam sodium takes place after the application of DMDS.
  • the concentrations are expressed in% by volume relative to the total volume of water.
  • the soil assessment was performed 90 and 180 days after planting the carnations.
  • the percentage of mortality was evaluated in 300 plants per plot. The data were processed with the Abbot formula and the percent efficacy of the treatments was calculated. Analysis of variance was performed using Duncan's test (0.05). In the test plots, samples were taken from the infected carnation. Using isolation studies, Fusarium spp. has been determined to be the infectious disease causing root rot in carnations.
  • composition C When the concentration of composition C is between 0.10% and 0.40% by volume (relative to the total volume of water) in the drip:
  • - DMDS formulations are stable throughout the fumigation process.
  • the formulations such as according to the invention are therefore quite suitable for drip application and allow effective and homogeneous pesticide treatment, without failure of the fumigation equipment.
  • composition C When the concentration of composition C is strictly greater than 0.40% by volume (relative to the total volume of water) in the drip:
  • the application was stopped by a drop in pressure in the dripper lines which dilated.
  • the dripper lines in PE for polyethylene, or in PVC for polyvinyl chloride
  • DMDS supernatant DMDS (which is therefore less well solubilized) which is not compatible with these materials.
  • the lines of the drippers swell and expand, which can cause fumigant to leak under the plastic film.
  • the drippers get clogged. This clogging can be induced can be induced:

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Agronomy & Crop Science (AREA)
  • Dentistry (AREA)
  • Plant Pathology (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Insects & Arthropods (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Catching Or Destruction (AREA)
EP20775693.3A 2019-08-30 2020-08-24 Formulation fumigante pour application en goutte a goutte Pending EP4021181A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1909556A FR3100105B1 (fr) 2019-08-30 2019-08-30 Formulation fumigante pour application en goutte a goutte
PCT/FR2020/051494 WO2021038165A1 (fr) 2019-08-30 2020-08-24 Formulation fumigante pour application en goutte a goutte

Publications (1)

Publication Number Publication Date
EP4021181A1 true EP4021181A1 (fr) 2022-07-06

Family

ID=68138571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20775693.3A Pending EP4021181A1 (fr) 2019-08-30 2020-08-24 Formulation fumigante pour application en goutte a goutte

Country Status (16)

Country Link
US (1) US20220354113A1 (uk)
EP (1) EP4021181A1 (uk)
JP (2) JP2022546506A (uk)
KR (1) KR20220050223A (uk)
CN (1) CN114340392A (uk)
AR (1) AR119599A1 (uk)
AU (1) AU2020339763A1 (uk)
CL (1) CL2022000473A1 (uk)
CR (1) CR20220073A (uk)
FR (1) FR3100105B1 (uk)
IL (1) IL290895A (uk)
JO (1) JOP20220048A1 (uk)
MX (1) MX2022001905A (uk)
UA (1) UA127981C2 (uk)
WO (1) WO2021038165A1 (uk)
ZA (1) ZA202201835B (uk)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6908592B1 (en) * 2000-12-13 2005-06-21 Trical, Inc. emulsified soil biocides used in drip irrigation systems
US6923937B2 (en) * 2000-12-13 2005-08-02 Trical, Inc. Emulsified soil biocides used in drip irrigation systems
FR2822022B1 (fr) * 2001-03-19 2005-11-04 Atofina Traitement pesticide des sols agricoles avec des composes soufres
FR2873172B1 (fr) 2004-07-15 2007-11-02 Dosatron Internat Sa Dispositif de dosage pour introduire un additif dans un courant de liquide
CN101491242B (zh) * 2008-01-24 2012-03-28 中国农业科学院植物保护研究所 二甲基二硫作为土壤熏蒸剂的应用技术
FR2948661B1 (fr) * 2009-07-31 2011-07-29 Arkema France Composition a base de sulfure organique a odeur masquee
US20110252694A1 (en) * 2010-04-19 2011-10-20 Honeywell International, Inc. Compositions for drip fumigation
FR2979521B1 (fr) 2011-09-01 2013-08-23 Arkema France Film photocatalytique pour la fumigation des sols
FR3003330B1 (fr) 2013-03-18 2015-07-17 Arkema France Dispositif de raccord de tube plongeur pour conteneur de conditionnement d'un produit, notamment d'un produit chimique
CN104365600B (zh) * 2014-09-30 2016-09-14 北京格林泰姆科技有限公司 二甲基二硫乳油、其制备方法以及水乳剂和胶囊
FR3028148B1 (fr) 2014-11-10 2017-05-19 Arkema France Film autoadhesif pour la fumigation des sols

Also Published As

Publication number Publication date
KR20220050223A (ko) 2022-04-22
FR3100105B1 (fr) 2023-12-08
US20220354113A1 (en) 2022-11-10
JOP20220048A1 (ar) 2023-01-30
MX2022001905A (es) 2022-03-17
FR3100105A1 (fr) 2021-03-05
WO2021038165A1 (fr) 2021-03-04
JP2022546506A (ja) 2022-11-04
AR119599A1 (es) 2021-12-29
CR20220073A (es) 2022-04-22
CN114340392A (zh) 2022-04-12
ZA202201835B (en) 2023-11-29
CL2022000473A1 (es) 2022-10-21
IL290895A (en) 2022-04-01
AU2020339763A1 (en) 2022-03-24
TW202112235A (zh) 2021-04-01
UA127981C2 (uk) 2024-02-28
JP2024059749A (ja) 2024-05-01

Similar Documents

Publication Publication Date Title
EP1370137B1 (fr) Traitement pesticide des sols ou des substrats avec des composes soufres
KR20100134105A (ko) 살충 조성물
BE1023957A9 (fr) Le limonene: formulation et utilisation insecticide
EP2253208B1 (fr) Formulations concentrées de CIPC dans un dialkylène glycol et leurs utilisations pour le traitement antigerminatif de bulbes ou tubercules
WO2021038165A1 (fr) Formulation fumigante pour application en goutte a goutte
TWI841773B (zh) 適於滴式使用之薰蒸消毒配方
FR2971399A1 (fr) Emulsion huile dans eau ou eau dans l'huile a base d'huiles vegetales en tant qu'adjuvant phytopharmaceutique.
CA2865360C (fr) Desherbant total des zones non agricoles
EP3791723A1 (fr) Composition répulsive et procédé associé
FR2955741A1 (fr) Composition herbicide et utilisations
EP1538902A2 (fr) Traitement pesticide des denrees stockees, enceintes, structures et oeuvres d'art avec des composes soufres
JP2012180297A (ja) ボウフラ駆除組成物
BE1003881A5 (fr) Procede d'inhibition de la germination des pommes de terre.
FR3130508A1 (fr) Dispositifs contenant des ingrédients actifs vis-à-vis des plantes appliqués sur le sol ou les parties aériennes des plantes
JP2005075753A (ja) 植物害虫防除剤
WO2023057083A1 (fr) Procede de traitement phytosanitaire au moyen d'aldehyde cinnamique encapsule
FR2780613A1 (fr) Composition pour la dessiccation de vegetaux, et procede pour son utilisation
FR2581507A1 (fr) Procede et produits pour la lutte contre le pyrale de la vigne, sparganothis pilleriana
JPH0790279A (ja) 木酢液の液性安定化方法
FR3029392A1 (fr) Formulation herbicide comprenant du diclofop-methyl et du clodinafop-propargyl
BE437474A (uk)
FR2802056A1 (fr) Composition herbicide comprenant une substance allelopathique et son procede d'utilisation
BE704708A (uk)
BE587402A (uk)

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220318

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAV Requested validation state of the european patent: fee paid

Extension state: MA

Effective date: 20220318

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20240521