WO2015172238A1

WO2015172238A1 - Liquid fertilizer compositions comprising an auxin. corresponding preparation methods and uses

Info

Publication number: WO2015172238A1
Application number: PCT/CA2015/000422
Authority: WO
Inventors: Régis BAZIRAMAKENGA
Original assignee: Agro-100 Ltée
Priority date: 2014-05-15
Filing date: 2015-05-13
Publication date: 2015-11-19
Also published as: CA2852126A1

Abstract

The present disclosure concerns aqueous fertilizer compositions which contain water; at least one compatibility agent chosen from organic acids, organic acid derivatives, and amines; at least one natural or synthetic auxin; and, optionally, at least one adjuvant. These compositions may be used, for example, as liquid fertilizers, growth regulators, and stimulators of the natural defense mechanisms of plants against pathogens. According to one aspect, the disclosure concerns a stable liquid fertilizer which is composed of an aqueous solution with at least one main element (nitrogen, phosphorus and potassium), one secondary element (calcium, magnesium and sulfur) and/or one minor element (boron, copper, iron, manganese, molybdenum and zinc), and which is characterized in that the solution contains at least one compatibility agent, the composition comprising an appreciable quantity of 2, 4-dichlorophenoxyacetic acid in aminated form, and optionally comprising at least one or a mixture of adjuvants.

Description

LIQUID FERTILIZER COMPOSITIONS COMPRISING AN AUXINE. PREPARATION METHODS AND CORRESPONDING USES

FIELD OF DISCLOSURE

001) The present disclosure relates to the field of liquid fertilizers such as fertilizers containing auxins, methods for their manufacture and their uses.

[002] The fertilizer compositions of the disclosure are in liquid form and particularly stable in storage.

STATE OF THE ART

[003] Natural and synthetic auxins are used in agriculture to control apical dominance, stem elongation, fruit growth and many processes involving cell division and differentiation. The main auxin is indole-3-acetic acid but there are other natural active molecules, among them 3-indole-butyric acid and 4-chloro-3-indole acetic acid, of similar structures, or still phenylacetic acid. Among the synthetic auxins, there are, for example, 1-naphthalene acid, 2,4-dichlorophenoxyacetic acid, 2,4-dichlorophenoxypropionic acid, 2-methoxy-3,6-dichlorobenzoic acid, or 2,4,5-trichlorophenoxyacetic acid.

[004] The exogenous contribution of auxins is very interesting for controlling crop yields. The spectrum of use of these molecules in agriculture is very wide. Moore's (1998) article "Tree growth regulators: issues of control, matter of management" describes the uses of growth regulators in fruit trees. For example, spraying small amounts of 2,4-dichlorophenoxyacetic acid or other auxins is sometimes done just after flowering fruit trees (apple, pear, oranges) to limit the number of fruits and therefore promote training more beautiful fruits. Auxin is sometimes applied after flowering to improve fruit size, sugar content, color and delay the development of the abscission zone.

[005] The article by Thornton et al. (2013) entitled "Influence of growth regulators on plant growth, yield and skin color of specialty potatoes" investigates the effect of foliar applications of 2,4-dichlorophenoxyacetic acid and 1-naphthaleneacetic acid on red coloring of potato tubers.

[006] Thompson and collaborator's article (2013) entitled "Determination of optimal timing of 2,4-dichlorophenoxyacetic acid foliar applications for common scab control in

I potato "presents the effects of this auxin on the incidence of potato tuber scab.

[007] There are many species of fusarium, some of which are only pathogenic and / or are likely to emit mycotoxins (fusariotoxins in this case), posing problems in agriculture or in human medicine and for the food industry. Fusarium wilt is a common disease of plants, and sometimes of the animal, caused by certain decomposing fungi commonly present in soils, of the genus Fusarium but having in these cases a parasitic development. The development of Fusarium wilt in crops varies greatly according to the species and varieties considered and according to the weather at the time of heading and early flowering (in dry weather, it does not appear on straw cereals but may appear on the corn, for example). In general, it does not appear in silos or storage areas because of the low humidity of cereals; however, toxins produced prior to storage are retained. The article by Petti et al. (2013) entitled "Auxin as a player in the biocontrol of Fusarium head blight disease of barley and their potential as a disease control agent" relates the effects of the applications of 3-indole acetic acid on reduction of Fusarium wilt in the barley crop.

() 08) Formulations of agrochemicals (pesticides and / or plant growth regulators) with liquid fertilizers are desirable in agriculture because of the multiple benefits of a single application in a single equipment. An application of such a combination or formulation allows both to provide nutrients for the growth of plants, to control pathogens that can affect the health and vitality of desirable plants or to control the beneficial or undesirable traits of the plant. culture. Spraying liquid fertilizer combined with other agrochemicals limits the number of tractor passes in the field, providing economic and environmental benefits.

Mixtures of auxins, more particularly 2,4-dichlorophenoxyacetic acid, with liquid fertilizers have been made unsuccessfully because of problems of physical stability. For example, US patent application 3918952 mentions that the stability of liquid fertilizers concentrated in nitrogen is decreased by the addition of synthetic auxins.

[010] In fact, 2,4-dichlorophenoxyacetic acid is insoluble in water and must be neutralized with amines or solubilized with organic solvents before being applied to the cultures. The organic form, generally ester, is very volatile, requires continuous agitation during application and can not be incorporated into a fertilizer solution concentrated because it separates from the liquid phase at rest. In addition, after volatilization, these esters have a high risk of vapor drift and can cause significant damage to non-target plants. Despite their very high solubility in water, the amino forms have a problem of compatibility with liquid fertilizers. Crystallization phenomena occur when the amines of 2,4-dichlorophenoxyacetic acid are brought into contact with liquid fertilizers. Applicators must use large dilutions and / or crystallization inhibitors.

[011] In the patent application WO 2012 / 027349Λ1, mention is made of the compatibility between glyphosate and 2,4-dichlorophenoxyacetic acid in a ready-to-use formulation occurs when the concentration exceeds 0.3%, the fold of the solution is less than 6 and / or in the presence of inorganic cations such as potassium, sodium calcium magnesium, ammonium, iron, zinc, copper, manganese and others. According to the application, this problem can be solved by adding the crystallization inhibitors of the polyethylenimine or polyvinylamine groups at concentrations of between 0.05 and 10% (weight by weight) of the composition.

[012 | The application of US 2009/0305896 A1 discloses a method of minimizing the formation of precipitates of 2,4-dichlorophenoxyacetic acid salts in the spray solution. The method consists of (1) a compatibilizer mixture, a 2,4-dichlorophenoxyacetic acid salt in amine form and an agrochemical (fertilizer or pesticide) containing non-amino grouped cations in an aqueous solution to form a stable solution that does not clog the sprayer ducts; and (2) an application of said solution to the target plants. It lists potential compatibility agents with a preference for alkoxylated quaternary surfactants. It also gives examples of obtaining a homogeneous mixture of 2,4-dichlorophenoxyacetic dimethylamine with the fertilizer 28-0-0 (urea plus ammonium nitrate).

[013] The patent application US Pat. No. 8076267B2 also discloses the production of ready-to-use formulations comprising metal trace elements (copper, iron, manganese, zinc or their mixture) and auxinic-type herbicide formulations. The metal ions are chelated with organic acids or amino acids before mixed with 2,4-dichlorophenoxyacetic acid.

[014] US patent application 2010 / 0273656A1 discloses ready-to-use formulations of the compositions containing the metal nutrients at a final concentration of between 0.1 and 5% by weight and the 2,4-acid-related compounds. dichlorophenoxyacetic. [015] Patent Application US005637553A discloses the production of ready-to-use formulations containing secondary and minor elements with herbicides; the nutrients are solubilized beforehand in the aqueous solution of ammonia and acetic acid.

[016] Patent Application US4581056 discloses the production of ready-to-use formulations containing the major and minor elements with auxins; the metal elements are previously chelated.

[017] The teaching according to these documents only partially solves the problems of the prior art because the suggested methods only apply to compositions of very low nutrient concentration. For example, patent WO 2012/027349-1 tests a water solution with a hardness of 342 ppm (approximately 0.0342% Ca, by weight per volume) and 2% ammonium sulphate (approximately 0.42% N and 0.48% S, w / v). We have observed precipitation problems at concentrations at relatively low concentrations, for example at 2% calcium or 5% nitrogen despite the presence of the crystallization inhibitor TEPA (Tetraethylenepentamine). It has also been found that the pH of the compositions greater than 6.5 does not guarantee the obtaining of stable compositions.

[018] There is a need for agrochemical formulations (pesticides and / or plant growth regulators) with liquid fertilizers desirable in agriculture because of the multiple advantages offered by a single application in a single equipment. An application of such a combination or formulation allows both to provide nutrients for the growth of plants, to control pathogens that can affect the health and vitality of desirable plants or to control the beneficial or undesirable traits of the plant. culture. Spraying liquid fertilizer combined with other agrochemicals limits the number of tractor passes in the field, providing economic and environmental benefits.

[019] There was currently a need for stable solutions soluble in water with not only a high concentration of nutrients and auxins but also a low risk of auxin drift.

[020] In addition, it would be interesting that these solutions are stable over time not only at room temperature but also at temperatures representative of the storage conditions. [021] There was also a need for a method of manufacturing liquid fertilizers without at least one of the disadvantages of liquid fertilizer manufacturing processes of the prior art.

[022] In particular, there was a need for an efficient method of manufacturing liquid fertilizers having at least one of the following advantages, to allow:

[023] the preparation of a fertilizer solution with a high content of nutrients (nitrogen, phosphorus, potassium, trace elements or a combination of at least two elements),

[024] the incorporation of a growth regulator of the auxin family during the manufacture of the composition.

[025] There was also a need for methods for implementing liquid fertilizers in crops and lacking at least one of the disadvantages of prior art methods of implementation.

There was a particular need for a method of using liquid fertilizers having at least one of the following advantages:

[027] the use of a ready-to-use concentrated fertilizer containing 2,4-dichlorophenoxyacetic acid, thereby reducing the risk of errors and loss of time due to the handling of several containers, and

[028] the use of a fertilizer compatible with other fertilizers and phytosanitary products.

[029] There was particularly a need for a method of using liquid fertilizers having at least one of the following advantages:

[030] the use of a ready-to-use fertilizer containing 2,4-dichlorophenoxyacetic acid, thus reducing the risk of errors and loss of time due to the handling of several containers, and

[031] no adverse effect on the target crop and neighboring crops.

SUMMARY OF DISCLOSURE

A liquid composition of fertilizer and / or phytosanitary treatment agent and / or growth regulator which comprises: a. some water; b. at least one compatibilizer selected from organic acids, organic acid derivatives and amines; vs. at least one natural or synthetic auxin; and D. optionally, at least one adjuvant.

| 033] A liquid composition of fertilizer and / or phytosanitary treatment agent and / or growth regulator which comprises: a. some water; b. at least one compatibilizer selected from organic acids, organic acid derivatives and amines, the compatibilizer being from about 1 to about 47.5% by weight based on the total weight of said liquid composition; vs. at least one natural or synthetic auxin representing from about 0.25% to about 10% relative to the total weight of said liquid composition; and D. optionally, at least one adjuvant.

| 034 | Liquid composition, concentrated and stable, fertilizer and / or phytosanitary treatment agent and / or growth regulator which consists of an aqueous solution comprising at least one of the group consisting of the major elements, the elements micronutrients and mixtures of at least 2 of the previously named elements; said liquid composition being characterized in that it also contains:

[035 | at least one compatibilizer selected from the group consisting of organic acids, organic acid derivatives, amines and mixtures of at least 2 thereof, the compatibilizer being from about 1 to about 47 5% by weight relative to the total weight of said liquid composition;

[036] at least one natural or synthetic auxin; and

[037] optionally, at least one adjuvant,

at. said liquid composition comprising:

[038] a total amount of minor agent and major agent may represent from about 15 to about 55% relative to the total weight of said liquid composition; or [039] a quantity of minor agent of between 5 and 15% by weight relative to the total weight of said liquid composition or

[040] a major agent amount of between 15 and 40% relative to the total weight of said liquid composition.

[041] Manufacturing process and corresponding uses in concentrated or diluted form as a liquid composition, concentrated and stable, of fertilizer and / or phytosanitary treatment agent and / or plant growth regulator.

BRIEF DESCRIPTION OF THE FIGURES

[042] FIG. 1 represents the solutions containing nitrogen and / or calcium at concentrations of between 1 and 5%, 2,4-dichlorophenoxyacetic acid and the crystallization inhibitor ΊΈΡΛ used in WO 2012 / 027349A1 ( incorporated by reference) at different pH's. Tube 1: 5% N 1% 2,4-dichlorophenoxyacetic acid with pH 4.75 (15% NH ₄ N0 25 ammonium sulfate, 2% TEPA, 2% 2,4-dichlorophenoxyacetic acid solubilized in dimethylamine and 79% water); Tube 2: 1% N, 1% Ca and 1% 2,4-dichlorophenoxyacetic acid with pH 6.45 (6% Ca (N0 ₃ ) ₂ .4H ₂ O, 2% ΤΈΡΛ, 2% 2,4- dichlorophenoxyacetic acid solubilized in dimethylamine and 90% water); Tube 3: 1% Ca 1% 2,4-dichlorophenoxyacetic acid with pH 9.5 (4% CaCl ₂ at 27.8% Ca, 2% TEPA, 2% 2,4-dichlorophenoxyacetic acid solubilized in dimethylamine and 92% water ). Precipitation problems are observed independently of the pH values of the solutions, despite the presence of a crystallization inhibitor.

[043] Figure 2 compares the stability of the 8% zinc solutions with a pH of 8 in the presence of prior art crystallization inhibitors WO 2012 / 027349A1 with one of the compatibilizers of the present disclosure. Tube 1 contains a solution containing 4.5% nitrogen and 7% zinc (20.8% ammonium oxide, 9% zinc oxide, 21.2% anhydrous citric acid and 49% water). In Tube 2, 1% 2,4-dichlorophenoxyacetic acid (solubilized in dimethylamine, 46.6% active ingredient by weight by weight) was added to the solution of Tube 1. In Tube 3, 1% was added. of 2,4-dichlorophenoxyacetic acid and 2% of TEPA used in WO 2012 / 027349A1, Tube 4 contains the solution of Tube 1 with 1% 2,4-dichlorophenoxyacetic acid and 2% LUPASOL G20 (polyethylenimine ) used in WO 2012 / 027349A1. Tube 5 contains the solution of Tube 1 with 1% 2,4-dichlorophenoxyacetic acid and 20% monoethnolamine (one of the compatibilizers according to the present disclosure). The crystallization inhibitors (Tube 3 and 4) had no effect in comparison with the composition containing monoethaolamine (Tube 5) which remained stable for more than 3 months. DETAILED DESCRIPTION OF THE DISCLOSURE

[044] Preliminary definitions:

[045] Ambient temperature: as used in the context of disclosure, this term refers to any temperature found in laboratories or other working conditions, this temperature is generally not below about 18 ° C or greater than about 23 ° C.

[046] Liquid fertilizer: this term refers to a fertilizer in fluid or liquid form containing various ratios of major, secondary and minor elements.

[047] Concentrated fertilizer: This term refers to a fertilizer that requires the addition of a diluent [usually water] prior to application to a plant.

[048] Ready-to-use formulation: this expression usually means a formulation with a very low concentration of agrochemicals and which is used without dilution or mixing. This term is sometimes referred to as a spray mixture or a tank mix.

| 049] Major element: this expression designates the essential elements required by the plant in relatively large quantities: nitrogen [N], phosphorus [P] and potassium [K].

[050] Secondary element: this expression designates the elements calcium [Ca], magnesium [Mg] and sulfur [S).

[051] Minor element or trace element: means essential nutrient other than primary or secondary: iron [Fe], manganese [Mn], copper [Cu], zinc (Zn), molybdenum (Mo), chlorine [Cl], and boron [B], because of their relatively small amounts needed by plants.

[052] Stable product: means, in the context of the disclosure, for example, a composition that can be stored under normal conditions (between 5 and 50 ° C) for at least 6 months without deposit formation, crystallization or separation of phases. This is a property that can provide a consistent and easy-to-apply fertilizer solution.

[053] Efficient and non-phytotoxic quantity: means in the context of the disclosure: a quantity of composition according to the disclosure sufficient to allow the regulation of the growth and / or the control of the disease of the cultures, and entailing for said cultures no symptoms of phytotoxicity. Such an amount is likely to vary within wide limits depending on the purpose pursued, the type of culture and the climatic conditions and the compounds included in the composition. This amount can be determined by systemic field trials.

[054] For example, said at least one compatibilizer may be selected from citric acid, ethylene-diamine tetraacetic acid, monoethanolamine and mixtures of at least 2 thereof.

For example, the compatibilizer may be from about 20 to about 25% by weight based on the total weight of said liquid composition.

For example, the amount of auxin may be from about 0.2 to about 10% based on the total weight of said liquid composition.

For example, the composition may comprise at least one nutrient selected from nitrogen, phosphorus, potassium, a solubilized trace element and mixtures of at least 2 thereof.

For example, the composition may comprise an amount of at least 2% and preferably at least 5% by weight of nutrients, based on the total weight of the liquid composition.

[059] For example, the pH of the composition can be from about 7 to about 8.5.

[060] For example, the pH of the composition can be from about 7.5 to about 7.8.

[061] For example, the composition can be stable at temperatures between 5 and 50 ° C, substantially without color change and / or substantially without appearance of suspended matter or precipitate.

| 062 | For example, the composition may be stable, in a sealed container, at a temperature between 5 and 50 ° C, for more than 6 months.

[063] For example, the composition may be in the form of a concentrated aqueous solution comprising from about 21.5 to about 87.5% water.

[064] For example, the composition may be in the form of an aqueous concentrate which comprises: about 5 to about 20% nitrogen; about 2 to about 10% phosphorus (20);

about 4 to about 10% potassium (K 2 O);

about 0.25 to about 3% magnesium;

about 0.01 to about 3% sulfur;

about 0.025 to about 5% micronutrients;

about 1 to about 10% compatibilizer;

about 0.1 to about 5% auxin; and

about 34 to about 87.5% water.

(065] For example, the composition may comprise: about 2 to about 10% nitrogen;

about 4 to about 15% micronutrients;

from about 30 to about 47.5% compatibilizer;

about 0.25 to about 5% auxin;

about 21.5 to about 63.75% water; and

optionally, up to about 0.2% antifoam.

[066] For example, the trace element can be selected from boron, iron, copper, manganese, zinc, molybdenum and mixtures of at least 2 of these.

[067] For example, auxin can be solubilized beforehand in a solvent which is itself soluble in water.

[068] For example, auxin can be solubilized beforehand in an alcohol (for example ethanol).

For example, auxin may be solubilized beforehand in an amine chosen from mono-, di- and tri-ethanolamine, as well as their derivatives and homologues, such as methyl diethanolamine, dimethylethanolamine, ethanolamine, diethyletone ethanolamine, ethanolamine di-n-butyl, mono-, di-tri-isopropanolamine, and n-butyl diethanolamine and mixtures of at least some of these.

For example, the amine compound may be dimethylamine, dimethylethanolamine or a mixture of dimethylamine and dimethylethanolamine. [071] For example, auxin may be previously solubilized in a sulfoxide (for example dimethyl sulfoxide).

[072] For example, auxin may be chosen from 2,4-dichlorophenoxyacetic acid, 1-naphthalene acid, 2,4-dichlorophenoxypropionic acid and 2-methoxy-3,6-dichlorobenzoic acid. , and again the acid, 2,4,5-trichlorophenoxyacetic acid

For example, the antifoam may be selected from the group consisting of siloxane or silicone derivatives.

[074] For example, the composition can freeze at temperatures below 0 ° C.

[075] For example, the composition can allow a contribution of 2,4-dichlorophenoxyacetic acid of 10 to 100 g per hectare, preferably this contribution is made in a single treatment.

[076] For example, the disclosure may relate to a method of manufacturing a liquid composition, fertilizer and / or phytosanitary treatment agent and / or growth regulator, as defined in the disclosure.

[077] For example, the method may comprise the following steps:

a) preparation of an aqueous solution containing one or more sources of nutrients and preferably with stirring;

b) adding the compatibilizer in the aqueous solution prepared in step a);

c) stirring the mixture obtained in step b) until complete dissolution of the ingredients and obtaining a homogeneous mixture;

d) adding to the homogeneous mixture obtained in step c) at least one auxin, which is preferably solubilized beforehand in a water-miscible solvent; e) optionally, an addition of adjuvants; and

f) stirring the mixture obtained in step d) and / or e) above until a homogeneous mixture is obtained,

[078] the different steps a) to f) being preferably carried out at room temperature.

[079] For example, the pH can be maintained between 7.5 and 7.8 throughout said process of preparation.

For example, the process may comprise an addition of an acid and / or a base in a liquid form. For example, the disclosure may include the use of a liquid fertilizer composition, as defined in the disclosure or as obtained by any of the methods disclosed in the disclosure, as a fertilizer and / or an agent. phytosanitary treatment and / or growth regulator, in liquid form.

[082] For example, the composition can be used as a growth regulator and / or thinning fruit trees.

[083] For example, the composition can be used during potato cultivation to improve red colouration of tubers and / or to control potato scab.

[084] For example, the composition can be used as a liquid fertilizer as a crop product for the control of Fusarium wilt.

[085] For example, the composition can be used as fertilizer in liquid form, in the agricultural field, in fertilization of crops.

086] For example, the composition can be used as a liquid fertilizer for the correction and / or prevention of nutrient deficiencies in plants.

[087] For example, the composition can be sprayed and / or sprayed on a plant.

[088] For example, the composition can be applied as a foliar spray.

For example, the composition can be used. The use according to claim 36, wherein the composition is directly applied at a rate of 1 to 10 L / ha as a foliar spray.

For example, the composition can be directly applied at a rate of about 2.5 to 7.5 L / ha as a foliar spray.

[091] For example, the composition may be previously diluted with water or with an aqueous solution consisting essentially of water.

[092 | For example, the composition may be diluted beforehand at a ratio of between 10 and 1000. For example, the composition of the aqueous solution may comprise at least one of the following: 2,4-dichlorophenoxyacetic acid or monoetholamine.

[094] For example, the composition can be applied at a rate of 1 to 10 L / ha as a foliar spray after adding a quantity of water corresponding to a volume of water of 250 to 1000 L / ha. .

For example, the composition can be applied at a rate of about 1 to about 10 L / ha as a foliar spray after adding a quantity of water corresponding to a volume of water of about 500 L. / ha, for market garden crops, cereals, berries and fruit trees.

[096] For example, the disclosure may comprise liquid, concentrated and stable compositions of fertilizer and / or phytosanitary treatment agent and / or growth regulator. These compositions consist of an aqueous solution comprising at least one of the group consisting of major elements, secondary elements, trace elements and mixtures of at least 2 of the previously named elements; these liquid compositions are characterized in that they also contain:

[097] at least one compatibilizer selected from the group consisting of organic acids, organic acid derivatives, amines and mixtures of at least 2 thereof, the compatibilizer being from 1 to 47 5% by weight relative to the total weight of said liquid composition;

[098] at least one natural or synthetic auxin, in an amount depending on the degree of effect desired as a fertilizer and / or as a phytosanitary treatment agent and / or as a growth regulator of at least 0.25% and at most 10% relative to the total weight of said liquid composition; and

[099] optionally, at least one adjuvant, a. said liquid composition comprising:

[0100] a total amount of major, secondary and minor elements that may represent from 15 to 55% relative to the total weight of said liquid composition, when there are simultaneously major elements, secondary elements and minor elements present in said liquid composition; or An amount of minor elements of between 5 and 15 %% relative to the total weight of said liquid composition, when there are no major elements present in said liquid composition; or

An amount of major elements of between 15 and 40% relative to the total weight of said liquid composition, when there are no minor elements present in said liquid composition.

For example, the disclosure may comprise a method for manufacturing a liquid composition, concentrated and stable, fertilizer and / or phytosanitary treatment agent and / or growth regulator, as defined previously in the disclosure.

These methods, in a particular mode of implementation, may comprise the following steps

b) adding the compatibilizer in the aqueous solution prepared in step a);

d) adding to the homogeneous mixture obtained in step c) at least one auxin, which is preferably solubilized beforehand in one of its solvents which is also soluble in water;

e) optionally, an addition of adjuvants; and

The different steps a) to f) being preferably carried out at room temperature.

For example, the disclosure may comprise the use of a stable liquid fertilizer composition as defined in the first subject of the disclosure or as obtained by implementing one of the methods defined in the second object of the disclosure.

[0107 | The compositions of the disclosure may have a pH between 7 and 8.5. For example, the pH may be from about 7.5 to about 8 or about 7.5 to about 7.8. For example, the compositions can be stable for long periods of storage at temperatures between 5 and 50 ° C, substantially without color change and without the appearance of suspended solids, crystals or gel.

For example, the compositions of the disclosure may include:

5 to 20% nitrogen;

2-10% phosphorus (P _z O _s );

4 to 10% potassium (K ₂ O);

0.25 to 3% magnesium;

0.01 to 3% sulfur;

0.025 to 5% trace elements;

1 to 10% compatibilizer;

From 0.25 to about 5% auxin; and

34 to 87.465% water.

For example, the compositions of the disclosure may include:

2-10% nitrogen;

4 to 15% trace elements;

30 to 47.5% compatibilizer;

from 0.25 to 2% auxin;

optionally, from 0 to 0.2% antifoam; and

b. from 21.5 to 63.75% of water.

For example, the compositions of the disclosure can be used in the agricultural field.

The methods of the disclosure make it possible to obtain an N-P-K fertilizer composition, secondary elements and / or trace elements. This composition is liquid, stable and can be stored for a long time without any decomposition or change of appearance. This composition can be used in particular in the context of the fertilization of a large number of agricultural and non-agricultural crops, growth control and control of pathogens. For example, these methods are implemented so that: in a first step, one or more nutrients are combined with an agent in water; compatibility; and in one or more successive steps 2,4-dichlorophenoxyacetic acid is added.

For example, the compositions of the disclosure can be used as liquid compositions especially as fertilizer in diluted form or undiluted form. Another aspect of the disclosure is to provide a liquid fertilizer composition that can be rapidly diluted in the field. The uses concerned by the disclosure are thus in particular in the agricultural field in crop fertilization, as a growth regulator and / or as a crop protection agent against pathogens and / or as a fertilizer for crop fertilization.

For example, the compositions of the disclosure may result from a reaction between a source of nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, boron, copper, iron, manganese, molybdenum, zinc, or a combination thereof. of at least two of these elements and an amino compound is incorporated in 2,4-dichlorophenoxyacetic acid in amino form.

Urea, ammonium, potassium chloride, potassium hydroxide, potassium nitrate, phosphoric acid, potassium phosphate, ammonium phosphates, can be cited as an example of nitrogen, potassium or phosphorus. usable in the compositions of the disclosure.

The sources of secondary (magnesium and magnesium) and minor (boron, copper, iron, manganese, molybdenum and zinc) elements used in the context of the present disclosure may, for example, be in the acid form, oxide, sulphate, nitrate and / or chloride.

The compatibilizer for the compositions of the present disclosure may be an organic acid and / or an amino compound. As an example, citric acid can be used. Among the amine compounds, mention may be made without limitation of monoethnaolamine, ethylene-diamine tetraacetic acid, diethylamine pentaacetic acid, N-hydroxyethylenediamine triacetic acid and their derivatives.

The 2,4-dichlorophenoxyacetic acid for the concentrated fertilizer solution according to the disclosure is previously solubilized in a water-soluble compound such as alcohols (methanol, ethanol), sulfoxides (dimethyl sulfoxide) and amino compounds Examples of such amines are those selected from the group consisting of mono-, di- and triethanolamine, methyldiethanolamine, dimethylethanolamine, ethanolamine di-n- butyl, mono-, di-tri-isopropanolamine and n-butyl diethanolamine and mixtures of at least 2 of these.

The compositions of this disclosure may include, as needed, an adjuvant such as a humectant, a surfactant, a penetrant and / or an antifoam. The adjuvants are advantageously added last in the manufacture of the compositions of the present invention.

Conventional spraying equipment, including sprayers pulled through fields by tractors, as well as aerial spraying equipment, can be used to apply the disclosure compositions. The compositions and methods of this disclosure can be used effectively on a wide variety of crops to optimize yields.

The compositions of the disclosure may also be applied to potato crops to improve the coloring of red tubers and / or to reduce the incidence of scab caused on pome fruit trees for thinning purposes. , and on cereals to fight against fusariosis.

For example, the timing of application of the compositions of the disclosure may vary with the cultures and the compositions may be readily applied to the plant foliage at any time during the growing season of the crop. The application of the compositions may be done at once or repeated several times if necessary.

For example, the rate of application may be such that a quantity of the composition is applied to the plant to obtain the desired increase in the quantitative and qualitative yield. The application rate will depend on a number of factors, such as type of crop, stage of growth, environmental conditions, etc.

The composition may be generally applied at a rate of about 1 to about 10 L / ha, for example in a volume of water of about 250 to about 1000 L / ha. For example, the composition can be applied at a rate of about 1 to 10 L / h in a volume of water of about 500 L / ha for vegetable crops and berry trees and about 1000 L / ha for pome fruit trees.

EXAMPLES:

The following examples are given for illustrative purposes only and should not be interpreted as constituting any limitation of the object of the disclosure in its generality. Example 1 - Liquid fertilizer composition comprising nitrogen, zinc and 2,4-dichlorophenoxyacetic acid

A solution containing 9.4% nitrogen, 9% zinc and 0.58% 2,4-dichlorophenoxyacetic acid dimethylamine, by weight of the final composition, was obtained as follows. In 28.04 kg of water was added 20.8 kg of ammonia solution (28% NH 4), 8.96 kg of zinc oxide, 21.2 kg of anhydrous citric acid. The stirred mixture until complete dissolution and 20 kg of monoethanolamine were then added. After returning to ambient temperature, 10 kg of 2,4-dichlorophenoxyacetic dimethylamine (46.6% of 2,4-dichlorophenoxyacetic acid by weight) were added.

Example 2 - Liquid fertilizer composition containing nitrogen, boron and 2,4-dichlorophenoxyacetic acid

A solution containing 21.5 kg of glycerine, 10.4 kg of monoethanolamine and 34.5 kg of water is prepared beforehand with vigorous stirring. When the mixture is perfectly homogeneous, 31.1 kg of boric acid are added and the medium is heated at 80 ° C for 3 hours with vigorous stirring. After returning to ambient temperature, 2.5 kg of 2,4-dichlorophenoxyacetic dimethylamine (46.6% 2,4-dichlorophenoxyacetic acid by weight) are added. A solution containing 2.4% by weight of nitrogen, 5.4% by weight of boron and 1.2% by weight of 2,4-dichlorophenoxyacetic acid, weight by weight is obtained.

Example 3 - Liquid fertilizer composition containing nitrogen, manganese and 2,4-dichlorophenoxyacetic acid

A solution of 5% of manganese was prepared from the following formulation. In 330 g of water, 15.3 kg of manganese sulfate (32% Mn) are dissolved. Once the manganese was in solution, 26 kg of EDTA was added. The mixture produced a white paste which dissolves after the addition of 21.5 kg of monoethanolamine followed by vigorous stirring for one hour. The solution was clear, pink-brown. On return to ambient temperature, 1 kg of 2,4-dichlorophenoxyacetic dimethylamine (46.6% of 2,4-dichlorophenoxyacetic acid by weight) was added. The mixture was further stirred for 30 minutes to make the solution homogeneous. A solution containing 5% by weight of nitrogen, 5% by weight of manganese and 0.58% by weight of 2,4-dichlorophenoxyacetic acid relative to the total weight of the composition was obtained.

Example 4 - 14-4-6 liquid fertilizer composition with trace elements and 2,4-dichlorophenoxyacetic acid In 44.8 kg of water, 30.5 kg of urea, 62.6 g of zinc oxide (ZnO), 84 g of magnesium oxide (MgO), 121.99 were added. g of iron sulphate (FeSO ₄ .7H ₂ O), 153.8 g of manganese sulphate (MnSO ₄ .H ₂ O), 1.3 kg of EDTA, 12.0 kg of potassium hydroxide 45% (KOHJ, 142.8 g of boric acid (LhBO j), 63 g of sodium molybdate, 7.3 kg of 75% phosphoric acid and 2.4 kg of potassium muriate, the mixture is maintained with vigorous stirring. For 30 minutes, when the mixture is perfectly homogeneous and cooled, 1 kg of 2,4-dichlorophenoxyacetic dimethyl diethanolamine (53.2% 2,4-dichlorophenoxyacetic acid, w / w) is added and the medium is maintained at room temperature. the ambient temperature, with vigorous stirring for 30 minutes. This gave a fertilizer solution containing 14% nitrogen, 4% phosphorus pentoxide (P ₂ 05), 6% potassium oxide (K ₂ 0), 0.05% zinc, 0.05% manganese, 0.025% boron, 0.025% molybdenum and 0.532% 2,4-dichlorophenic acid noxyacétique by weight by weight.

Example 5 - Comparative test: stability of the solutions

A stability test comparing the crystallization inhibitors and the monoethanolamine compatibility agent was performed with zinc (Figure 2). A solution containing 4.5% nitrogen and 7% zinc was prepared by dissolving 20.8 kg of ammonium oxide, 9 kg of zinc oxide and 21.2 kg of anhydrous citric acid in 49 kg of water with continuous stirring. for three hours at room temperature. A transparent SI solution with a pH of 8 is obtained (FIG. 2, Tube 1). The solutions of Tubes 2, 3, 4 and 5 were obtained in the same way as the SI solution except that part of the water was replaced by

1 kg of 2,4-dichlorophenoxyacetic acid (solubilized in dimethylamine, 46.6% of active ingredient by weight by weight) in Tube 2,

1 kg of 2,4-dichlorophenoxyacetic acid and 2 kg of TEPA used in application WO 2012 / 027349A1 in Tube 3,

1 kg of 2,4-dichlorophenoxyacetic acid and 2 kg of LUPASOL G20 (polyethylenimine) used in application WO 2012 / 027349A1 in Tube 4,

1 kg of 2,4-dichlorophenoxyacetic acid and 20 kg of monoethylamine in the tube 5.

The presence of precipitate in the tube 2 shows that maintaining the pH of the solutions at a pH greater than 6.5 is not sufficient to obtain stable compositions containing 2,4-dichlorophenoxyacetic acid. It also appears that crystallization inhibitors such as TEPA or LUPASOL G20 have no impact on concentrations relatively high. The solution containing monoethanolamine remained stable for more than three months.

The results presented in Table 1 below, illustrate the advantages of the technology of the present application, as previously discussed.

Table 1

DMEA: dimethyldiethanolamine

MEA: monoethanolamine

EDTA

DMSO: dimethyl sultoxide

S: stable

± S: progressive formation of crystals

C: crystallization

G: geel

[0142 | Although the present disclosure has been described with specific implementations, it is understood that several variations and modifications may be added to the said implementations, and the present disclosure is intended to cover such modifications, uses or adaptations of the present disclosure generally follows the principles of disclosure and includes any variation of the present description that will become known or conventional in the scope of the business in which the present disclosure is found, and which may apply to the essential elements mentioned herein. -high, in accordance with the scope of the following claims. Those skilled in the art will understand that all examples and particular modes described in the detailed description, may apply and / or be combined in any form with the compositions, methods and uses set forth in this disclosure.

Claims

CLAIMS:

A liquid composition of fertilizer and / or phytosanitary treatment agent and / or growth regulator which comprises: water;

at least one compatibilizer chosen from organic acids, organic acid derivatives, amines and mixtures of at least two of these, the compatibilizer representing from about 1 to about 47.5%; by weight relative to the total weight of said liquid composition; at least one natural or synthetic auxin representing approximately 0.25% to approximately 10% relative to the total weight of said liquid composition; and

optionally, at least one adjuvant.

2. A liquid, concentrated and stable composition of fertilizer and / or phytosanitary treatment agent and / or growth regulator which consists of an aqueous solution comprising at least one of the group consisting of the major elements, secondary elements, trace elements and mixtures of at least 2 of the previously named elements; said liquid composition being characterized in that it also contains:

at least one compatibilizer selected from the group consisting of organic acids, organic acid derivatives, amines and mixtures of at least 2 of these, the compatibilizer being from about 1 to about 47.5% by weight relative to the total weight of said liquid composition;

at least one natural or synthetic auxin, in an amount depending on the degree of effect desired as fertilizer and / or as a phytosanitary treatment agent and / or as a growth regulator of at least 0.25% and not more than 10% relative to the total weight of said liquid composition; and

optionally, at least one adjuvant, said liquid composition comprising: a total amount of minor agent and major agent that can represent from about 15 to about 55% relative to the total weight of said composition; liquid, when there are simultaneously major elements and minor elements present in said liquid composition; or a quantity of minor agent of between 5 and 15% relative to the total weight of said liquid composition, when there are no major elements present in said liquid composition; or a major agent amount of between 15 and 40% relative to the total weight of said liquid composition, when there are no minor elements present in said liquid composition.

The liquid composition according to claim 1 or 2, wherein said at least one compatibilizer is selected from citric acid, ethylene diamine tetraacetic acid, monoethanolamine and mixtures of at least 2 thereof. .

The liquid composition according to claim 1, 2 or 3, wherein the compatibilizer is from about 20 to about 25% by weight based on the total weight of said liquid composition.

The liquid composition according to any one of claims 1 to 4, wherein the amount of auxin is from about 0.2 to about 10% based on the total weight of said liquid composition.

6. Liquid composition according to any one of claims 1 to 5, comprising at least one nutrient selected from nitrogen, phosphorus, potassium, a solubilized trace element and mixtures of at least 2 thereof.

A liquid composition according to any one of claims 1 to 6, comprising an amount of at least 2% and preferably at least 5% by weight of nutrients, based on the total weight of the liquid composition .

The liquid composition of any one of claims 1 to 7, wherein the ply is from about 7 to about 8.5.

The liquid composition of claim 8 having a pH of about 7.5 to about 7.8.

10. A liquid composition according to any one of claims 1 to 9, stable at temperatures between 5 and 50 ° C, substantially without color change and / or substantially without appearance of suspended matter or precipitate.

11. Liquid composition according to claim 10, characterized in that it is stable, in a sealed container, at a temperature between 5 and 50 ° C, for more than 6 months.

12. A liquid composition according to any one of claims 1 to 7 in the form of a concentrated aqueous solution comprising from about 21.5 to about 87.5% water.

The liquid composition of claim 12 in the form of an aqueous concentrate which comprises:

about 5 to about 20% nitrogen;

about 2 to about 10% phosphorus (P2O5);

about 4 to about 10% potassium (K 2 O);

about 0.25 to about 3% magnesium;

about 0.01 to about 3% sulfur;

about 0.025 to about 5% of trace elements;

about 1 to about 10% compatibilizer;

about 0.1 to about 5% auxin; and

about 34 to about 87.5% water.

14. Liquid composition according to claim 12, comprising:

about 2 to about 10% nitrogen;

about 4 to about 15% of trace elements;

about 30 to about 47.5% compatibilizer;

about 0.25 to about 5% auxin;

about 21.5 to about 63.75% water; and

optionally, up to about 0.2% antifoam.

15. Liquid composition according to any one of claims 2 to 14, wherein the trace element is selected from boron, iron, copper, manganese, zinc, molybdenum and mixtures of at least 2. of these.

16. Liquid composition according to any one of claims 1 to 15, wherein the auxin is solubilized beforehand in a solvent itself soluble in water.

17. The liquid composition according to claim 15, wherein the auxin is previously solubilized in an alcohol which is preferably ethanol.

18. A liquid composition according to claim 15 or 16, in which the auxin is solubilized beforehand in an amine chosen from mono-, di- and triethanolamine, as well as their derivatives and homologues, such as methyl diethanolamine, dimethylethanolamine, ethanolamine, diethylketone ethanolamine, ethanolamine di-n-butyl, mono-, di-tri-isopropanolamine, and n-butyl diethanolamine and mixtures of at least one of these.

The liquid composition according to claim 18, wherein the amine compound is dimethylamine, dimethylethanolamine or a mixture of dimethylamine and dimethylethanolamine.

20. The liquid composition according to claim 15 or 16, wherein the auxin is solubilized in a sulfoxide which is preferably dimethyl sulfoxide.

The liquid composition according to any of claims 1 to 20, wherein the auxin is selected from 2,4-dichlorophenoxyacetic acid, 1-naphthalene acid, 2,4-dichlorophenoxypropionic acid, 2-methoxy-3,6-dichlorobenzoic acid, and also 2,4,5-trichlorophenoxyacetic acid

22. A liquid composition according to any of claims 14 to 21, wherein the antifoam is selected from the group consisting of siloxane or silicone derivatives.

23. Liquid composition according to any one of claims 1 to 22, characterized in that said composition can freeze at temperatures below 0 ° C.

24. stable liquid fertilizer composition according to any one of claims 1 to 23, characterized in that it allows a supply of 2,4-dichlorophenoxyacetic acid of 10 to 100 g per hectare, preferably this intake is performed in a single treatment.

25. A method of manufacturing a liquid composition, fertilizer and / or phytosanitary treatment agent and / or growth regulator, as defined in any one of claims 1 to 24.

26. A process according to claim 25 for the preparation of the liquid composition, said process comprising the following steps:

- a) preparation of an aqueous solution containing one or more sources of nutrients and preferably with stirring;

b) adding the compatibilizer in the aqueous solution prepared in step a);

c) stirring the mixture obtained in stage b) until the ingredients have completely dissolved and a homogeneous mixture is obtained;

- d) adding in the homogeneous mixture obtained in step c) at least one auxin, which is preferably previously solubilized in a water-miscible solvent;

- e] optionally, an addition of adjuvants; and

the different steps a) to f) being preferably carried out at room temperature.

27. Process according to claim 25, for preparing the liquid composition, in which the pH is maintained between 7.5 and 7.8 throughout said preparation process.

28. The method according to claim 27, for preparing a liquid composition by adding an acid and / or a base in a liquid form.

29. Use of a liquid fertilizer composition, as defined in any one of claims 1 to 24 or as obtained by any of the methods described in any one of claims 25 to 28, as a fertilizer and / or as a phytosanitary treatment agent and / or as a growth regulator, in liquid form.

30. Use according to claim 29, the liquid composition as growth regulator and / or thinning fruit trees.

31. The use, according to claim 30, of the liquid composition during potato cultivation to improve the red coloring of the tubers and / or to control the scab of the potato.

32. Use according to claim 31, of the liquid composition as fertilizer in liquid form as a product applicable to the cultivation of cereals to fight against Fusarium wilt.

33. Use, according to claim 32, of the liquid composition, as fertilizer in liquid form, in the agricultural field, in fertilization of crops.

34. Use according to claim 33 as a fertilizer in liquid form for the correction and / or prevention of nutrient deficiencies in plants.

35. Use according to any one of claims 29 to 34, wherein said composition is sprayed and / or sprayed on a plant.

The use according to claim 35, wherein said composition is applied as a foliar spray.

The use of claim 36 wherein the composition is directly applied at a rate of 1 to 10 L / ha as a foliar spray.

The use of claim 37 wherein said composition is directly applied at a rate of about 2.5 to 7.5 L / ha as a foliar spray.

39. Use according to any one of claims 29 to 38, wherein the composition is previously diluted with water or with an aqueous solution consisting essentially of water.

40. Use according to claim 39, wherein the composition is previously diluted to a ratio between 10 and 1000

41. Use according to claim 39 or 40, wherein the aqueous solution comprises at least one of the following: 2,4-dichlorophenoxyacetic acid or monoetholamine.

42. Use according to claim 39, wherein said composition is applied at a dose of 1 to 10 L / ha as a foliar spray after adding a quantity of water corresponding to a volume of water of 250 to 1000 L / ha.

The use of claim 40, wherein said composition is applied at a dosage of about 1 to about 10 L / ha as a foliar spray after adding a quantity of water corresponding to a volume of water of about 500 L / ha, for vegetable crops, cereals, berries and fruit trees.