CA3101106A1

CA3101106A1 - Aqueous herbicidal intermixtures

Info

Publication number: CA3101106A1
Application number: CA3101106A
Authority: CA
Inventors: Prakash Mahadeo Jadhav; Stephen SKORCZYNSKI; Emily CHIARELLA; Cody Jack GRAY; Jaidev Rajnikant Shroff; Vikram Rajnikant Shroff
Original assignee: UPL Ltd
Current assignee: UPL Ltd
Priority date: 2018-05-25
Filing date: 2019-05-08
Publication date: 2019-11-28
Also published as: AR115156A1; AU2019273057A1; UA127152C2; ECSP20083246A; CN112423591A; MX2020012577A; PH12020552005A1; CO2020015294A2; BR102019010195A2; ZA202007891B; WO2019224639A1; PE20211386A1

Abstract

The present invention relates to aqueous homogeneous herbicide compositions comprising electrolytic herbicides and a multipart amine component wherein said multipart amine component comprises at least one tertiary amine having an alkyl group of at least 8 carbon atoms.

Description

AQUEOUS HERBICIDAL INTERMIXTURES
TECHNICAL FIELD OF THE INVENTION
The invention relates to herbicidal intermixtures. More particularly, the invention relates to essentially aqueous homogeneous herbicide compositions comprising electrolytic herbicides and a multipart amine component.
BACKGROUND OF THE INVENTION
Controlling unwanted plants is of high importance in agriculture. Over the years, various strategies have been developed for effective control of these unwanted plants. Depending upon the region it is necessary to find or develop appropriate techniques for desired weed control. A large part of the surface of the world is arid, characterized as too dry for conventional rain fed agriculture and hence it demands for precise or specific weed control techniques.
"Arid" implies prolonged dryness, and is used with respect to the climate and the land below it. In such regions the ability to produce agricultural crops is restricted.
Usually on arid lands the potential evaporation of water from the land exceeds the rainfall. The land may be characterized according to the degree of aridity as dry forest, chaparral or brushland, grassland or savannah, or desert. "Arid" does not adequately characterize the soils, however, for they may vary in many ways.
Often they are alkaline or saline.
An arid ecosystem differs in many respects from one of tropical or temperate zones. Unlike temperate zones, an arid zone is characterized as an area of low precipitation, high temperature, and high rate of evaporation. Frequency of rainfall does not describe accurately the type of the arid zone nor does the amount of precipitation govern the type of vegetation.
Among the various agronomic practices that could bring about immediate positive results in dryland and arid areas, optimum and effective weed control is the first and foremost management practice. However many weeds growing naturally in the

2 arid region have evolved a more complicate overall drought adaptation strategy which usually involves several mechanisms of drought escape, tolerance and avoidance. The leaf shedding option, the tight stomatal control and the development of a prolific root system are all specific characteristics developed by the vegetation destined to grow in arid regions. The plants adopt to osmoregulation and increase in elasticity of the cell and a decrease in cell size. Due to such natural adaption of the plants/weeds to the specific conditions, they are tougher than those growing under normal conditions and is difficult to control. Further such weeds have thick and waxy cuticle layers defending them from the penetration of any use of foliar herbicides. It has been observed that the commonly used non-selective herbicide such as glufosinate based formulations were not providing an effective weed control in arid regions.
Glufosinate is a non-selective foliage application type herbicide which kills or controls many species of weeds. In the Pesticide Manual 15th Edition, glufosinate has been described as being widely used in burn-down segments, and for control of a wide range of broad-leaved weeds and grasses and sedges in cereals, cotton, corn and soy, fruit orchards, vineyards, rubber and oil palm plantations, ornamental trees and bushes, non-crop land, and pre-emergence in vegetables.
Glufosinate being a contact herbicide is known to be used with various adjuvants to improve the efficacy or to induce certain specific properties as required.
US6642177 discloses that to be effective, glufosinate must be formulated with a high concentration of surfactants to get the required bio efficacy.
DE 3931051 discloses salts of herbicidal acids with long-chain nitrogen bases such as fatty amines.
It has been observed by the inventors of the present invention that existing formulations of non-selective herbicide such as glufosinate is not effective as desired particularly in arid environments. In view of such observation, there is a necessity for developing more effective formulations which are physically stable as

3 well as bio-efficaceous irrespective of the environment such as arid, or non-arid regions.
With the forgoing in consideration, the primary object of the present invention is the designing and preparation of a novel composition of glufosinate which is highly efficacious particularly in arid region where the weeds are having thick and waxy leaves and is difficult to penetrate with usual foliar herbicidal formulations.
OBJECTS OF THE INVENTION
It is an object of the present invention to provide an aqueous herbicidal formulation comprising glufosinate and a multi-part amine component.
It is another object of the present invention to provide an aqueous herbicidal formulation comprising glufosinate and a multi-part amine component for effective weed control in arid regions.
It is another object of the present invention to provide a process or preparing an aqueous herbicidal formulation comprising glufosinate and a multi-part amine component.
Yet another object of the present invention is to provide a method for controlling unwanted plants in arid regions.
SUMMARY OF THE INVENTION
The present invention provides an herbicidal intermixture comprising:
a) An electrolytic herbicide; and b) a multipart amine component.
The present invention provides an herbicidal intermixture comprising:
a) An electrolytic herbicide;
b) a multipart amine component; and c) water.

4 The present invention further provides an herbicidal intermixture comprising:
a) a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or lower alkyl esters thereof;
b) a multipart amine component;
c) optionally other agrochemical excipients; and d) water.
In another aspect the present invention provides an aqueous herbicidal composition comprising:
(a) a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or lower alkyl esters thereof;
(b) a multipart amine component;
(c) one or more organic solvents;
(d) optionally one or more adjuvants; and (e) water, wherein said multipart amine component comprises at least one tertiary amine having an alkyl group of at least 8 carbon atoms.
In another aspect of the present invention, there is provided a process for preparing herbicidal intermixture according to the present invention.
Another aspect of the present invention is to provide a method controlling unwanted plants in crop and non-crop areas, said method comprising applying to the plants, unwanted plants or to their locus, a herbicidally effective amount of herbicidal intermixtures according to the present invention.
The present invention further provides a method of controlling unwanted plants in crop and non-crop areas in arid region, said method comprising applying to the plants, unwanted plants or to their locus in arid region, an herbicidally effective amount of herbicidal intermixtures according to the present invention.

DETAILED DESCRIPTION
It has been found out that highly efficacious herbicidal compositions comprising glufosinate can be developed by intermixing glufosinate with multipart amine components. In order to overcome the inefficiencies of the existing formulations

5 particularly in arid regions, inventors of the present invention surprisingly found out that herbicidal intermixture of glufosinate with multipart amine components can be effectively used.
Thus according to an aspect of the present invention, there is provided an herbicidal intermixture comprising:
a) An electrolytic herbicide; and b) a multipart amine component.
In an embodiment, the intermixture comprises water.
The present invention thus provides an herbicidal intermixture comprising:
a) An electrolytic herbicide;
b) a multipart amine component; and c) water.
In another embodiment, the intermixture of the present invention possesses superior herbicidal activity.
In an embodiment, the term intermixture includes an admixture.
In certain embodiments, the term intermixture includes the mixtures resulting from any one of the processes selected from reaction, solubilisation, neutralization or partial neutralization occurring between the components of the intermixture.
In certain other embodiments, the term intermixture includes a composition or formulation according to the present invention.

6 Accordingly, in certain other embodiments, there is provided an herbicidal mixture comprising:
a) An electrolytic herbicide; and b) a multipart amine component.
In an embodiment, the herbicidal mixture comprises water.
Accordingly, in certain other embodiments, there is provided an herbicidal mixture comprising:
a) An electrolytic herbicide;
b) a multipart amine component; and c) water.
In another embodiment, the herbicidal mixture of the present invention possesses superior herbicidal activity.
In an embodiment of the present invention, the electrolytic herbicide is selected from phospinic acid herbicides.
In some embodiments the phosphinic acid herbicide is selected from the group comprising glufosinate and glyphosate.
In certain embodiments glufosinate refers to its derivatives selected from lower alkyl esters thereof or salts thereof with acids or bases such as its hydrochloride, monosodium salt, disodium salt, monopotassium salt, dipotassium salt, monocalcium salt, ammonium salt, -NH3(CH3)+ salt, -NH2(CH3)2+ salt, -NH(CH3)3+ salt, -NH(CH3)2(C2H4OH)+, -NH2(CH3)(C2H4OH)+, or its methyl ester, ethyl ester, propyl ester or butyl ester.
In certain other embodiments, glufosinate refers to isomers or mixture of isomers.
In a preferred embodiment, the isomer is glufosinate-P.

7 In some embodiments, glyphosate refers to glyphosate-mono ammonium, glyphosate diammonium, glyphosate-isopropylammonium, glyphosate-potassium or glyphosate isopropyl amine salt.
Thus according to another aspect of the present invention, there is provided an herbicidal intermixture comprising:
a) a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof;
b) a multipart amine component;
c) optionally other agrochemical excipients; and d) water.
In an embodiment, the intermixture of the invention possesses superior herbicidal activity.
In an embodiment the multipart amine component comprises one or more tertiary amines having alkyl groups of 8 to 20 carbon atoms.
In another embodiment the multipart amine component comprises one or more tertiary dimethyl alkylamines wherein the alkyl groups have 8 to 20 carbon atoms.
In some embodiments, the multipart amine component comprises one or more tertiary dimethyl alkylamines wherein the alkyl groups have 10 to 20 carbon atoms.
In an embodiment, the multipart amine component according to the present invention comprises at least two tertiary amines having alkyl groups of 8 to carbon atoms.
In another embodiment, the multipart amine component according to the present invention comprises at least three tertiary amines having alkyl groups of 8 to carbon atoms.

8 In an embodiment, the multipart amine component according to the present invention comprises at least four tertiary amines having alkyl groups of 8 to carbon atoms.
In an embodiment, the multipart amine component according to the present invention comprises at least two tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms.
In another embodiment, the multipart amine component according to the present invention comprises at least three tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms.
In another embodiment, the multipart amine component according to the present invention comprises at least four tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms.
In another embodiment, the multipart amine component according to the present invention comprises at least one tertiary dimethyl alkylamine having alkyl groups of 10 to 18 carbon atoms.
In an embodiment, the multipart amine component according to the present invention comprises at least two tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms wherein said tertiary dimethyl alkylamines are present in a ratio of 1:99 to 99:1.
In another embodiment, the multipart amine component according to the present invention comprises at least two tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms wherein at least one dimethyl alkylamine is present at least in an amount about 50% by weight of the multipart amine component.

9 In an embodiment, the term intermixture or admixture according to the present invention includes a composition or a formulation.
In an embodiment of the present invention, the composition comprises from about 0.1% to about 60% by weight of phosphinic acid herbicide.
In a preferred embodiment the composition comprises from about 1% to about 50%

by weight of phosphinic acid herbicide.
In an embodiment the composition comprises from about 0.1% to about 60% by weight of multipart amine component.
In a preferred embodiment the composition comprises from about 1% to about 50%

by weight of multipart amine component.
In an embodiment the composition comprises phosphinic acid herbicide and multipart amine component in a molar ratio of from about 1: 1.5 to about 1.5:1.
In a preferred embodiment the composition comprises phosphinic acid herbicide and multipart amine component in a molar ratio of about 1: 1.5 In another preferred embodiment the composition comprises phosphinic acid herbicide and multipart amine component in an equimolar ratio.
In another embodiment, the compositions according to the present invention further comprises organic solvents.
Thus accordingly, the present invention provides an aqueous herbicidal composition comprising:
a) a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof;
b) a multipart amine component;

C) one or more organic solvents;
d) optionally one or agrochemical excipients; and e) water;
wherein said multipart amine component comprises at least one tertiary amine 5 having an alkyl group of at least 8 carbon atoms.
In an embodiment, the solvents may be selected from but are not limited to:
a water miscible polar/non-polar or a water immiscible polar/non-polar solvent, for

10 example, alkyl esters of pthalic acid and trimellitic acid; aromatic hydrocarbons such as xylene, solvesso-100, solvesso-150, solvesso-200, alkyl benzenes;
methylnaphthalene; mixtures of aromatics aliphatic or cycloaliphatic hydrocarbon such as hexane and heptanes; phthalates; ketones such as cyclohexanone, 2-octanone or acetophenone, methyl isobutyl ketone - saturated or unsaturated .. cyclic ketones such as isophorone, chlorinated hydrocarbons; vegetable oils and modified vegetable oils; glycols and their derivatives, polyglycols; aliphatic alcohols, alkoxy aliphatic alcohols or mixtures of such two or more solvents.
Other solvents can be alkylene carbonates (like propylene carbonate), alkyl amides, and esters such as alkyl esters of monocarboxylic acids and dicarboxylic acid, ester-amides, cyclic ethers such furan and its derivatives or mixtures thereof.
In certain embodiments of the present invention, the herbicidal intermixtures further comprises other agrochemical excipients.
In some embodiments, other agronomically suitable excipients are selected from but are not limited to surfactants, solvent, fertilizer, pH modifiers, crystallization inhibitors, viscosity modifiers, suspending agents, spray droplet modifiers, pigments, antioxidants, foaming agents, light-blocking agents, compatibilizing agents, antifoam agents, sequestering agents, neutralizing agents, corrosion inhibitors, dyes, odorants, spreading agents, penetration aids, micronutrients, emollients, lubricants, sticking agents, dispersing agents, thickening agents, freezing point depressants, antimicrobial agents, and the like.

11 In an embodiment, the herbicidal intermixture of the present invention may be combined with at least another active ingredient selected from the group comprising herbicides, insecticides, fungicides, biological agents, plant growth activators, fertilizers or combinations thereof.
Thus, in an embodiment, the herbicidal intermixture according to the present invention may be combined with an herbicide. Exemplary herbicides that may be combined with the herbicidal intermixture of the present invention may include, but are not limited to, herbicides selected from classes such as ACCase inhibitors, ALS
inhibitors, EPSP synthase inhibitors, synthetic auxins, auxin transport inhibitors, HPPD inhibitors, lipid synthesis inhibitors, long chain fatty acid inhibitors, as well as herbicides with unknown modes of action.
According to another aspect, the present invention further provides a process for preparing herbicidal intermixtures according to the invention.
In an embodiment, the present invention provides a process for preparing herbicidal intermixture according to the invention, said process comprising the steps:
a) mixing a multipart amine component with water;
b) adding an electrolytic herbicide to prepare a clear solution.
Thus in an embodiment, there is provided a process for preparing an herbicidal intermixture comprising:
a) An electrolytic herbicide; and b) multipart amine component said process comprising the steps:
i. mixing said multipart amine component with water; and ii. adding said electrolytic herbicide to prepare a clear solution.
In some embodiments, the present invention provides a process for preparing herbicidal compositions according to the invention, said process comprising:

12 a) mixing a multipart amine component with water;
b) adding one or more organic solvents;
c) optionally adding other agrochemical excipients; and d) intermixing an electrolytic herbicide with the mixture obtained in step c) until a clear solution is obtained.
In certain embodiments, the present invention provides a process for preparing herbicidal compositions according to the invention, said process comprising the steps:
a) mixing a multipart amine component with water;
b) adding one or more organic solvents;
c) optionally adding other agrochemical excipients; and d) intermixing a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof with the mixture obtained in step c) until a clear solution is obtained.
In certain embodiments, the phosphinic acid herbicide is selected from glufosinate, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof.
Thus in certain embodiments, the present invention provides a process for preparing herbicidal compositions according to the invention, said process comprising the steps:
a) mixing a multipart amine component with water;
b) adding one or more organic solvents;
c) optionally adding other agrochemical excipients; and d) intermixing glufosinate, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof with the mixture obtained in step c) until a clear solution is obtained.

13 In certain other embodiments, the present invention provides a process for preparing herbicidal compositions according to the invention, said process comprising the steps:
a) mixing a multipart amine component with water;
b) adding one or more organic solvents;
c) adding other agrochemical excipients selected from the group comprising nonionic surfactants, anionic surfactants, wetting agents and dispersing agents; and d) intermixing glufosinate, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof with the mixture obtained in step c) until a clear solution is obtained.
In certain embodiments the multipart amine component comprises one or more tertiary amines having alkyl groups of 8 to 20 carbon atoms.
In certain other embodiments the multipart amine component comprises one or more tertiary dimethyl alkylamines wherein the alkyl groups have 8 to 20 carbon atoms.
In some embodiments, the multipart amine component comprises one or more tertiary dimethyl alkylamines wherein the alkyl groups have 10 to 18 carbon atoms.
The present invention further provides a method of controlling unwanted plants in crop and non-crop areas, said method comprising applying to the plants, unwanted plants or to their locus a herbicidally effective amount of compositions according to the present invention.
Accordingly, the present invention provides a method of controlling unwanted plants in arid regions said method comprising applying to the to the plants, unwanted plants or to their locus a herbicidally effective amount of compositions according to the present invention.

14 In an embodiment, the present invention provides a method of controlling unwanted plants in both crop and non-crop areas in arid region said method comprising applying to the unwanted plants or to their locus a herbicidally effective amount of compositions according to the present invention.
Thus in an embodiment there is provided a weed control method in arid region, said method comprising applying to the weeds or to their locus a herbicidally effective amount of herbicidal intermixture comprising:
a) An electrolytic herbicide;
b) a multipart amine component; and c) water.
In another embodiment, there is provided a weed control method in arid region, said method comprising applying to the weeds or to their locus a herbicidally effective amount of herbicidal intermixture comprising:
a) a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters thereof;
b) a multipart amine component;
c) optionally other agrochemical excipients; and d) water.
Examples:
Example 1: A herbicidal intermixture according to the present invention comprising glufosinate ammonium is prepared as follows:
Ingredient Quantity(% w/w) glufosinate ammonium 25.2 multipart amine (012-014) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.

The composition is prepared by a process as follows:
Required quantity of multipart amine component, wetting agent, organic solvent, ammonium sulfate and water were combined and mixed until a homogeneous 5 mixture is obtained. Required quantity of glufosinate ammonium was added in portions and mixed vigorously until a clear solution is obtained.
Example 2: A herbicidal intermixture according to the present invention comprising glufosinate acid is prepared as follows:
Ingredient Quantity(% w/w) glufosinate acid 17.0 multipart amine (010-014) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
The composition was prepared by following process given for example 1.
Example 3: A herbicidal intermixture according to the present invention comprising glufosinate dipotassium salt is prepared as follows:
Ingredient Quantity (% w/w) glufosinate dipotassium salt 30.0 multipart amine (010-018) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.

Example 4: A herbicidal intermixture according to the present invention comprising glufosinate acid is prepared as follows:
Ingredient Quantity (% w/w) glufosinate acid 17.0 multipart amine(C10-018) 20.0 Wetting agent 25.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 5: A herbicidal intermixture according to the present invention comprising glufosinate ammonium is prepared as follows Ingredient Quantity (% w/w) glufosinate ammonium 15.0 multipart amine(012-016) 20.0 Wetting agent 17.0 Alkyl polyglycoside 10.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 6: A herbicidal intermixture according to the present invention comprising glufosinate acid is prepared as follows:
Ingredient Quantity (% w/w) glufosinate acid 17.0 multipart amine(012-016) 20.0 Sodium lauryl ether sulfate 16.5 Wetting agent 8.5 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 7: A herbicidal intermixture according to the present invention comprising glufosinate ammonium and glyphosate isopropyl amine is prepared as follows:
Ingredient Quantity (% w/w) glufosinate ammonium 15.00 glyphosate IPA 30.00 multipart amine(012-014) 18.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 8: A herbicidal intermixture according to the present invention comprising glufosinate acid and glyphosate isopropyl amine is prepared as follows:
Ingredient Quantity (% w/w) glufosinate acid 15.4 glyphosate IPA 29.0 multipart amine(012-014) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 9: A herbicidal intermixture according to the present invention comprising glufosinate acid and glyphosate isopropyl amine is prepared as follows:
Ingredient Quantity (% w/w) glufosinate acid 15.4 glyphosate IPA 18.5 multipart amine(C10-018) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 10: A herbicidal intermixture according to the present invention comprising glufosinate acid and glyphosate isopropyl amine is prepared as follows Ingredient Quantity (% w/w) glufosinate acid 15.4 glyphosate IPA 29.0 multipart amine(C10-018) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 11: A herbicidal intermixture according to the present invention comprising glufosinate acid and glyphosate acid is prepared as follows Ingredient Quantity (% w/w) glufosinate acid 15.4 glyphosate acid 15.0 multipart amine(08-C20) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 12: A herbicidal intermixture according to the present invention comprising glufosinate acid and glyphosate acid is prepared as follows:

Ingredient Quantity (% w/w) glufosinate acid 15.4 glyphosate acid 15.0 multipart amine (010-020) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Example 13: A herbicidal intermixture according to the present invention comprising glufosinate acid and glyphosate acid is prepared as follows:
Ingredient Quantity (% w/w) glufosinate acid 15.4 glyphosate acid 15.0 multipart amine (Cio-C18) 20.0 wetting agent 15.0 organic solvent 10.0 ammonium sulfate 5.0 water q.s.
Field Trial:
Field trials were carried out in arid regions using the herbicidal intermixtures comprising glufosinate prepared according to the present invention as the broad-spectrum herbicide in arid regions. Two comparative compositions were prepared (in the absence of multipart amine component) and tested along with the inventive compositions to find out the bio-efficacy. The details of the compositions are as given below:
Example 14: A herbicidal intermixture according to the present invention comprising glufosinate acid is prepared as follows:

Ingredient Quantity (% w/w) Glufosinate acid 17.0 multipart amine (010-014) 20.0 Syngergen GA 12.0 Synergen PFA 6.0 1-methoxy-2-propanol 6.0 propylene glycol 8.0 ammonium sulfate 5.0 water QS
Comparative example (Example 15):
A composition of glufosinate acid (in the absence of multipart amine component) was prepared as follows:
Ingredient Quantity (% w/w) Glufosinate acid 17.0 Syngergen GA 17.0 Synergen PFA 10.0 1-methoxy-2-propanol 10.0 ammonium sulfate 5.0 Propylene glycol 14.0 water QS

Comparative example (Example 16):
A composition of glufosinate salt (in the absence of multipart amine component) was prepared as follows:
Ingredient Quantity (% w/w) Glufosinate ammonium 25.2 Synergen GA 17.0 Synergen PFA 10.0 1-methoxy-2-propanol 10.0 ammonium sulfate 5.0 Propylene glycol 14 water QS
The compositions were diluted with water and applied to broad leave weeds, grasses and sedges in the arid region.
After treatment using composition (Example 14) prepared according to the present invention, chlorosis followed by necrosis of the weeds were observed demonstrating the bio-efficacy of the new compositions. Comparative compositions (Example 15 and Example 16) and market sample of glufosinate ammonium (Liberty 280 SL Glufosinate ammonium) were also tested to compare the results. The observations at 7 days, 14 days and 21 days after application were summarized in below table (table 1).
Table 1: A weed control % weed control (Palmer % weed control (Kochia) Rate of Amaranth) Treatment application 7 days 14 days 21 days 7 days 14 days 21 days Example 14 0.61 lb/A 36.7 83.3 90.0 43.3 86.7 90.0 Example 14 0.835 lb/A 43.3 90.0 90.0 46.7 90.0 90.0 Market sample 0.73 lb/A 26.7 63.3 53.3 30.0 56.7 56.7 Example 15 0.61Ib/A 22.4 45.7 30.3 21.1 37.4 26.5 Example 15 0.835 lb/A 25.7 50.3 34.6 23.5 40.2 31.8 Example 16 0.61Ib/A 25.3 51.2 37.8 24.3 45.6 36.5 Example 16 0.835 lb/A 28.2 58.3 51.1 27.5 48.7 39.2 The field-testing results as shown in the above table evidently reveal that the compositions according to the present invention is extremely effective for weed control in arid region. It has been noted that due to natural adaption of the weeds to the arid conditions, they are tougher than those growing under normal conditions and was difficult to control. Further these weeds displayed thick and waxy cuticle layers defending them from the penetration of the herbicide spray. It has been noted that the commonly used glufosinate based formulations and market sample of glufosinate were not providing an effective weed control in arid regions.
The inventive compositions even at a low rate, is found to be highly efficacious in controlling tough weeds in the area.
The instant invention is more specifically explained by above examples.
However, it should be understood that the scope of the present invention is not limited by the examples in any manner. It will be appreciated by any person skilled in this art that the present invention includes aforesaid examples and further can be modified and altered within the technical scope of the present invention.

Claims

23

1. An herbicidal intermixture comprising:
a) An electrolytic herbicide; and b) a multipart amine component.

2. An herbicidal intermixture according to claim 1 comprising:
a) An electrolytic herbicide;
b) a multipart amine component; and c) water.

3. An herbicidal intermixture according to claim 1 wherein said electrolytic herbicide is a phosphinic acid herbicide selected from the group comprising glufosinate and glyphosate

4. An herbicidal intermixture according to claim 3 wherein said phosphinic acid herbicide is selected from glufosinate, its salts, its isomers, mixture of isomers, derivatives, or their lower alkyl esters

5. An aqueous herbicidal composition comprising:
(a) a phosphinic acid herbicide, its salts, its isomers, mixture of isomers, derivatives, or lower alkyl esters thereof;
(b) a multipart amine component;
(C) one or more organic solvents;
(d) optionally one or more adjuvants; and (e) water, wherein said multipart amine component comprises at least one tertiary amine having an alkyl group of at least 8 carbon atoms.

6. An aqueous herbicidal composition according to claim 5 wherein said phosphinic acid herbicide is selected from the group comprising glufosinate and glyphosate.

7. An aqueous herbicidal composition according to claim 5 wherein said multipart amine component comprises at least one tertiary amine having an alkyl group of 10 to 20 carbon atoms

8. An aqueous herbicidal composition according to claim 5 wherein said multipart amine component comprises at least one tertiary dimethyl alkylamine having an alkyl group of 8 to 20 carbon atoms

9. An aqueous herbicidal composition according to claim 5 wherein said multipart amine component comprises at least two tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms.

10.An aqueous herbicidal composition according to claim 5 wherein said multipart amine component comprises at least two tertiary dimethyl alkylamines having alkyl groups of 8 to 20 carbon atoms wherein at least one dimethyl alkylamine is present at least in an amount about 50% by weight of the multipart amine component

11.An aqueous herbicidal composition according to claim 5 wherein said composition comprises phosphinic acid herbicide and multipart amine component in a molar ratio of from about 1: 1.5 to about 1.5:1.

12.A process for preparing an herbicidal intermixture, wherein said process comprises steps of;
a. mixing said multipart amine component with water; and b. adding said electrolytic herbicide to prepare a clear solution.

13. A process for preparing herbicidal intermixture according to claim 12, wherein process comprising the steps of :
a) mixing a multipart amine component with water;
b) adding one or more organic solvents;
c) optionally adding other agrochemical excipients; and d) intermixing an electrolytic herbicide with the mixture obtained in step C) until a clear solution is obtained.

14.A process according to claim 13, wherein said multipart amine component comprises at least one tertiary amine having an alkyl group of at least 8 carbon atoms.

15.A process according to claim 13, wherein said electrolytic herbicide is a phosphinic acid herbicide selected from the group comprising glufosinate and glyphosate

16.A method controlling unwanted plants in crop and non-crop areas, said method comprising applying to the plants, unwanted plants or to their locus, a herbicidally effective amount of an herbicidal intermixture comprising:
a) An electrolytic herbicide; and 5 b) a multipart amine component.

17.A method of controlling unwanted plants in crop and non-crop areas in arid region, said method comprising applying to the plants, unwanted plants or to their locus in arid region, an herbicidally effective amount of an herbicidal intermixture comprising:
10 a) An electrolytic herbicide; and b) a multipart amine component.