WO2001026463A1 - Adjuvant for a herbicidal composition - Google Patents

Adjuvant for a herbicidal composition Download PDF

Info

Publication number
WO2001026463A1
WO2001026463A1 PCT/AU2000/000284 AU0000284W WO0126463A1 WO 2001026463 A1 WO2001026463 A1 WO 2001026463A1 AU 0000284 W AU0000284 W AU 0000284W WO 0126463 A1 WO0126463 A1 WO 0126463A1
Authority
WO
WIPO (PCT)
Prior art keywords
herbicide
glyphosate
adjuvant
sulphate
mixture
Prior art date
Application number
PCT/AU2000/000284
Other languages
French (fr)
Inventor
Shane John Koenig
Clifford Neale Muir
Original Assignee
Nufarm Limited
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
Priority claimed from AUPQ3393A external-priority patent/AUPQ339399A0/en
Priority claimed from AUPQ4292A external-priority patent/AUPQ429299A0/en
Application filed by Nufarm Limited filed Critical Nufarm Limited
Priority to AU35440/00A priority Critical patent/AU3544000A/en
Publication of WO2001026463A1 publication Critical patent/WO2001026463A1/en

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
    • A01N25/30—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 characterised by the surfactants
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
    • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals

Definitions

  • the present invention relates to an adjuvant for a herbicide to a herbicidal composition containing the adjuvant and to a method of using the composition.
  • Adjuvants are substances in a herbicide formulation or added to the formulation prior to application which improve herbicidal activity or application characteristics.
  • the invention will be described with reference to a particularly preferred herbicide, glyphosate, but it will be understood that the adjuvant may be used with other herbicides if desired.
  • N-phosphonomethylglycine also known by its common name glyphosate, is an important broad spectrum herbicide which is widely used to control a wide range of weeds.
  • Glyphosate is an acid which is relatively insoluble in water and it is typically formulated as a salt particularly the isopropylamine salt which is highly water soluble.
  • Glyphosate is used in a range of forms. Aqueous concentrates are widely used by farmers. The concentrates are diluted shortly before application. Glyphosate is also available in a water soluble granule formulation. The granules are dissolved in water prior to application.
  • Glyphosate is normally formulated with a surfactant and other additives.
  • the surfactants used in the formulation are frequently a fatty amine or derivative such as an ethoxylated fatty amine or quaternary ammonium compound.
  • Another class of emulsifier used with glyphosate are the alkylpolysaccharides. Such adjuvants have been found to increase significantly the activity of glyphosate.
  • Spray tank adjuvants are also commonly used. This type of adjuvant is added to the spray tank used to prepare a dilute solution of herbicide from the concentrate.
  • Surfactants such as fatty amine ethoxylates and alkylpolysaccharides have also been used for this purpose.
  • Trifluralin is a herbicide of the dinitroaniline group, and is one of the most commercially successful herbicides and is widely used in pre-sowing application to soil in many important crops. It is effective against both grassy weeds and broad-leaved weed.
  • Atrazine is a herbicide of the triazine group, and is also used as a herbicide at the time of sowing crops, particularly canola.
  • herbicide formulation Another difficulty of herbicide formulation is stability in hard water. This is, of course, a particular problem in many rural areas where water quality is poor. For many herbicide formulations the components separate in hard water and are ineffective.
  • an adjuvant which will allow herbicides such as glyphosate to be used in a wide range of formulations and with other herbicide groups such as the dinitroaniline and triazine groups.
  • an adjuvant composition for use with a herbicide including: one or more agriculturally acceptable salts such as ammonium sulphate, alkylammonium sulphate or mixture thereof; a surfactant component including an ammonium salt of an ethoxylated alcohol phosphate ester and an amphoteric surfactant.
  • the alkylammonium sulphate when present may be a mono-, di- or trialkyl- ammonium sulphate.
  • the alkyl group or groups preferably contain up to six carbon atoms, more preferably up to 4 carbon atoms and most preferably are isopropyl. Ammonium sulphate is preferably present.
  • the amphoteric surfactant is preferably a phospholipid with an acidic buffer, particularly propionic acid .
  • the preferred concentration of components in the adjuvant are as follows: from 5 to 30% w/w of ammonium sulphate, alkylammonium sulphate or mixture thereof; from 0 to 25% w/w, preferably from 0.5 to 25% w/w of ammonium salt of an ethoxylated alcohol phosphate ester and; from 0.5 to 10% w/w of amphoteric surfactant which is preferably a phospholipid.
  • the adjuvant of the invention may be used as a tank mix type adjuvant or may be the adjuvant component of a herbicide formulation such as glyphosate, a dinitroanline herbicide, a triazine herbicide, a cyclohexane dione herbicide, a phenoxy herbicide, an imidazolinone herbicide, a pyridyloxyphenoxy herbicide or mixture thereof.
  • a herbicide formulation such as glyphosate, a dinitroanline herbicide, a triazine herbicide, a cyclohexane dione herbicide, a phenoxy herbicide, an imidazolinone herbicide, a pyridyloxyphenoxy herbicide or mixture thereof.
  • the invention further provides a herbicidal composition containing an effective amount of one or more herbicides and an adjuvant component including a surfactant component including an ammonium salt of an ethoxylated phosphate ester and an amphoteric surfactant and an agriculturally acceptable inorganic salt preferably ammonium sulphate or an alkyl ammonium sulphate.
  • a surfactant component including an ammonium salt of an ethoxylated phosphate ester and an amphoteric surfactant and an agriculturally acceptable inorganic salt preferably ammonium sulphate or an alkyl ammonium sulphate.
  • the herbicide is glyphosate, trifluralin or atrazine and more preferably it is glyphosate or mixture of glyphosate with at least one of trifluralin and atrazine.
  • Glyphosate when present may be in the form of the isopropyl amine salt, the ammonium salt, sodium salt or other suitable glyphosate salt.
  • glyphosate is used in the form of a mixture of isopropylamine and mono-ammonium salts.
  • the ratio of isopropylamine salt to ammonium salt is in the range of from 70:30 to 97:3 and more preferably from 75:25 to 95:5.
  • the ethoxylated phosphate ester may be present in an amount of up to 10% by weight of herbicidal composition but preferably it is from 0.1 to 5% by weight of the herbicidal composition.
  • the adjuvant composition of the invention may, if desired, contain other additives such as further surfactants, crop oils, antifoam agents, further inorganic salts, nitrogenous compounds, dyes or mixtures thereof.
  • surfactants which may be useful include alkanolamides, betaine derivatives, ethoxylated propoxylated block copolymers, glycerol esters, glycol esters, imidazolines and imidazoline derivatives, lanolin derivatives, lecithin derivatives, tertiary or quaternary polyoxyalkylene alkylamines, polyoxyalkylene and non-polyoxyalkylene alkylamine oxides, polyoxyalkylene alkylethers, polyoxyalkylene alkylarylethers, polyoxyalkylene alkylesters, alkoxylated and non- alkoxylated sorbitan esters, alkyl glycosides, alkyl polyglycosides, sucrose esters, sucrose glycerides, alkyl sulphates or phosphates, olefin sulfonates, alkylaryl sulfonates, polyoxyalkylene alkylether sulphates or phosphates
  • acceptable inorganic salts include ammonium sulphate, ammonium nitrate, potassium phosphate, tetrapotassium pyrophosphate, sodium bisulphate, sodium sulphate, ammonium bicarbonate.
  • the crop oil may be used in an amount of up to 25% by weight of the adjuvant.
  • the adjuvant of the invention is free of herbicidal active agents and is for use as an additive to a herbicide composition prior to application.
  • This general type of adjuvant is known as a tank mix adjuvant and may be packaged and sold separately or may be in the form of a kit comprising separate herbicidal composition and adjuvant for use in admixture and with added water.
  • the adjuvant composition may be sold in a form ready to dilute with a herbicide composition and water.
  • the composition may be used with a range of +herbicides such as those listed above but is particularly suited to use with glyphosate, dinitroaniline herbicides, triazine herbicides or mixtures thereof.
  • the adjuvant of the invention may be packaged in a kit with a herbicide composition such that when approximately equal volumes of adjuvant and herbicide are mixed they provide a weight ratio of herbicide to ethoxylated alcohol phosphate ester of from 150:1 to 3:1. This ratio is particularly suitable when the herbicide is glyphosate (in which case the weight ratio is determined on the basis of glyphosate acid).
  • the invention provides a method of eradicating weeds including mixing a herbicide formulation with the above described adjuvant.
  • a herbicide formulation with the above described adjuvant.
  • concentration of glyphosate is expressed in grams per litre (g/L) it is understood that this refers to grams of glyphosate as the acid form per litre of composition.
  • An adjuvant formulation of the invention for use with a glyphosate composition was prepared by combining the following components in the relative quantities specified:
  • RHODOFAC ARB-70 sold by Rhodia is an ethoxylated alcohol phosphate ester and forms the ammonium salt in solution.
  • Li-700 from Loveland Industries Inc, U.S.A. is a mixture of soyal phospholipids and propionic acid.
  • a glyphosate composition suitable for use with an adjuvant in accordance with Example 1 was prepared by combining the following components in the relative quantities specified:
  • the glyphosate acid wetcake contained approximately 86% w/w glyphosate based on glyphosate acid (11 % w/w water). The purity of the glyphosate was 96.5% on a dry basis.
  • composition which contains 540 g/L glyphosate could readily be delivered using standard pumps used by farmers and was stable in solution at temperatures of 5°C for extended periods.
  • GERONOL CF/AR surfactant sold by Rhodia is the 2-propanamine salt of ethoxylated alcohol phosphate ester.
  • Figure 1 is a bar chart comparing the relative performance of a 1 :1 volume mixture of the herbicidal composition of Example 2 and the adjuvant of Example 1 with a prior art herbicidal composition/adjuvant mixture at the recommended ratio.
  • Figure 2 is a bar chart comparing the low use rate efficiency of a 1 :1 mixture (by volume) of the adjuvant/composition formulation of Example
  • Figure 3 is a bar chart comparing the weed control performance of the composition of the Example 2 when used with the adjuvant of Example 1 in a 1 :1 volume ratio with the prior art composition when used with the recommended surfactant adjuvant.
  • Figure 4 is a bar chart comparing the performance of the adjuvant/glyphosate combination of Examples 1 and 2 (1 :1 volumetric ratio) with the prior art adjuvant/glyphosate combination when used together with TRIFLUR trifluralin formulation.
  • Figure 5 is a chart comparing the performance of the adjuvant/glyphosate combination of Examples 1 and Example 2 (1 :1 volumetric ratio) with the prior art adjuvant/glyphosate combination when each are used with NUTRAZINE brand atrazine formulation.
  • Figure 1 shows the performance of the prior art herbicidal adjuvant/composition mixture is significantly reduced in hard water whereas there is little or no reduction in the efficiency of the composition of Example 1 /Example 2 at the same use rate (gai/ha).
  • the comparison was carried out using soft mixing water (225 ppm) and hard mixing water (1000 ppm).
  • the adjuvant of the invention significantly improves herbicidal performance in hard water when the rate of application was 450g glyphosate acid equivalent per hectare.
  • Glyphosate products are frequently sprayed in conjunction with other pesticides but incompatibility with other pesticides is sometimes an important issue which can arise from physical effects within the spray tank or biological effects.
  • Biological incompatibility may result from interactions between herbicides resulting in poorer weed control than when the herbicides are separately applied.
  • Figures 4 and 5 show that the glyphosate composition of the invention exhibits a high compatibility rate when compared with other high rate glyphosate compositions.
  • Figure 4 compares the invention with prior art when each are used with a commercial Trifluralin composition.
  • Figure 5 compares composition of the invention with the prior art when used with commercial atrazine formulation.

Abstract

An adjuvant composition for use with a herbicide including: one or more agriculturally acceptable salts; a surfactant component including an ammonium salt of an ethoxylated alcohol phosphate ester; and an amphoteric surfactant.

Description

Adjuvant For A Herbicidal Composition
The present invention relates to an adjuvant for a herbicide to a herbicidal composition containing the adjuvant and to a method of using the composition.
It is known to use adjuvants with herbicides. Adjuvants are substances in a herbicide formulation or added to the formulation prior to application which improve herbicidal activity or application characteristics.
The invention will be described with reference to a particularly preferred herbicide, glyphosate, but it will be understood that the adjuvant may be used with other herbicides if desired.
N-phosphonomethylglycine also known by its common name glyphosate, is an important broad spectrum herbicide which is widely used to control a wide range of weeds. Glyphosate is an acid which is relatively insoluble in water and it is typically formulated as a salt particularly the isopropylamine salt which is highly water soluble.
Glyphosate is used in a range of forms. Aqueous concentrates are widely used by farmers. The concentrates are diluted shortly before application. Glyphosate is also available in a water soluble granule formulation. The granules are dissolved in water prior to application.
Glyphosate is normally formulated with a surfactant and other additives. The surfactants used in the formulation are frequently a fatty amine or derivative such as an ethoxylated fatty amine or quaternary ammonium compound. Another class of emulsifier used with glyphosate are the alkylpolysaccharides. Such adjuvants have been found to increase significantly the activity of glyphosate.
Spray tank adjuvants are also commonly used. This type of adjuvant is added to the spray tank used to prepare a dilute solution of herbicide from the concentrate. Surfactants such as fatty amine ethoxylates and alkylpolysaccharides have also been used for this purpose.
Trifluralin is a herbicide of the dinitroaniline group, and is one of the most commercially successful herbicides and is widely used in pre-sowing application to soil in many important crops. It is effective against both grassy weeds and broad-leaved weed. Atrazine is a herbicide of the triazine group, and is also used as a herbicide at the time of sowing crops, particularly canola.
It is sometimes desirable to use other herbicides in combination with glyphosate. In order to kill the maximum number of weeds the timing for application of glyphosate needs to be left until shortly before sowing. This also coincides with the optimal timing for triazine herbicides such as atrazine and dinitroaniline herbicides such as trifluralin. If glyphosate and atrazine or trifluralin could be effectively applied together this has the potential to allow better knockdown. It would also allow farmers to sow a crop at the optimal time to maximise yield and reduce competition from weeds. Tank mixing of the herbicides would reduce the labour and cost associated with separate applications which are currently required.
Existing formulations of glyphosate are generally incompatible with trifluralin and atrazine resulting in phase separation when the herbicide compositions are combined. Also their combined use has been found to seriously reduce the efficacy of the compositions.
Another difficulty of herbicide formulation is stability in hard water. This is, of course, a particular problem in many rural areas where water quality is poor. For many herbicide formulations the components separate in hard water and are ineffective.
It is an aspect of the invention to provide an adjuvant which will allow herbicides such as glyphosate to be used in a wide range of formulations and with other herbicide groups such as the dinitroaniline and triazine groups. In accordance with the invention we provide an adjuvant composition for use with a herbicide including: one or more agriculturally acceptable salts such as ammonium sulphate, alkylammonium sulphate or mixture thereof; a surfactant component including an ammonium salt of an ethoxylated alcohol phosphate ester and an amphoteric surfactant.
The alkylammonium sulphate when present may be a mono-, di- or trialkyl- ammonium sulphate. The alkyl group or groups preferably contain up to six carbon atoms, more preferably up to 4 carbon atoms and most preferably are isopropyl. Ammonium sulphate is preferably present.
The amphoteric surfactant is preferably a phospholipid with an acidic buffer, particularly propionic acid .
The preferred concentration of components in the adjuvant are as follows: from 5 to 30% w/w of ammonium sulphate, alkylammonium sulphate or mixture thereof; from 0 to 25% w/w, preferably from 0.5 to 25% w/w of ammonium salt of an ethoxylated alcohol phosphate ester and; from 0.5 to 10% w/w of amphoteric surfactant which is preferably a phospholipid.
The adjuvant of the invention may be used as a tank mix type adjuvant or may be the adjuvant component of a herbicide formulation such as glyphosate, a dinitroanline herbicide, a triazine herbicide, a cyclohexane dione herbicide, a phenoxy herbicide, an imidazolinone herbicide, a pyridyloxyphenoxy herbicide or mixture thereof.
Accordingly the invention further provides a herbicidal composition containing an effective amount of one or more herbicides and an adjuvant component including a surfactant component including an ammonium salt of an ethoxylated phosphate ester and an amphoteric surfactant and an agriculturally acceptable inorganic salt preferably ammonium sulphate or an alkyl ammonium sulphate.
Preferably the herbicide is glyphosate, trifluralin or atrazine and more preferably it is glyphosate or mixture of glyphosate with at least one of trifluralin and atrazine.
Glyphosate when present, may be in the form of the isopropyl amine salt, the ammonium salt, sodium salt or other suitable glyphosate salt. We have found that there are particular advantages if glyphosate is used in the form of a mixture of isopropylamine and mono-ammonium salts. As disclosed in our copending Australian Provisional Patent Application No. PQ3393 (13 October 1999) it is particularly preferred that the ratio of isopropylamine salt to ammonium salt is in the range of from 70:30 to 97:3 and more preferably from 75:25 to 95:5.
The ethoxylated phosphate ester may be present in an amount of up to 10% by weight of herbicidal composition but preferably it is from 0.1 to 5% by weight of the herbicidal composition.
The adjuvant composition of the invention may, if desired, contain other additives such as further surfactants, crop oils, antifoam agents, further inorganic salts, nitrogenous compounds, dyes or mixtures thereof.
Examples of surfactants which may be useful include alkanolamides, betaine derivatives, ethoxylated propoxylated block copolymers, glycerol esters, glycol esters, imidazolines and imidazoline derivatives, lanolin derivatives, lecithin derivatives, tertiary or quaternary polyoxyalkylene alkylamines, polyoxyalkylene and non-polyoxyalkylene alkylamine oxides, polyoxyalkylene alkylethers, polyoxyalkylene alkylarylethers, polyoxyalkylene alkylesters, alkoxylated and non- alkoxylated sorbitan esters, alkyl glycosides, alkyl polyglycosides, sucrose esters, sucrose glycerides, alkyl sulphates or phosphates, olefin sulfonates, alkylaryl sulfonates, polyoxyalkylene alkylether sulphates or phosphates, sulfosuccinate derivatives, sulfosuccinamates, taurates, sulphates and sulfonates of oils, fatty acids, alcohols, alkoxylated alcohols, fatty esters and aromatic derivatives and mixtures thereof.
Examples of acceptable inorganic salts include ammonium sulphate, ammonium nitrate, potassium phosphate, tetrapotassium pyrophosphate, sodium bisulphate, sodium sulphate, ammonium bicarbonate.
Examples of crop oils which may be present in the composition include paraffinic oils, vegetable oils and vegetable oil derivatives such as vegetable oils trans esterified with lower alkanols. The crop oil may be used in an amount of up to 25% by weight of the adjuvant.
In a preferred embodiment the adjuvant of the invention is free of herbicidal active agents and is for use as an additive to a herbicide composition prior to application. This general type of adjuvant is known as a tank mix adjuvant and may be packaged and sold separately or may be in the form of a kit comprising separate herbicidal composition and adjuvant for use in admixture and with added water. The adjuvant composition may be sold in a form ready to dilute with a herbicide composition and water. The composition may be used with a range of +herbicides such as those listed above but is particularly suited to use with glyphosate, dinitroaniline herbicides, triazine herbicides or mixtures thereof.
The adjuvant of the invention may be packaged in a kit with a herbicide composition such that when approximately equal volumes of adjuvant and herbicide are mixed they provide a weight ratio of herbicide to ethoxylated alcohol phosphate ester of from 150:1 to 3:1. This ratio is particularly suitable when the herbicide is glyphosate (in which case the weight ratio is determined on the basis of glyphosate acid).
In a further aspect the invention provides a method of eradicating weeds including mixing a herbicide formulation with the above described adjuvant. The present invention will now be more fully described with reference to the following examples. It should be understood, however, that the description following is illustrative only and should not be taken in any way as a restriction on the generality of the invention described above. Where the concentration of glyphosate is expressed in grams per litre (g/L) it is understood that this refers to grams of glyphosate as the acid form per litre of composition.
Example 1
An adjuvant formulation of the invention for use with a glyphosate composition was prepared by combining the following components in the relative quantities specified:
Figure imgf000007_0001
RHODOFAC ARB-70 sold by Rhodia is an ethoxylated alcohol phosphate ester and forms the ammonium salt in solution.
Li-700 from Loveland Industries Inc, U.S.A. is a mixture of soyal phospholipids and propionic acid.
The combination of components in the adjuvant composition generally allows for better physical compatibility and improved efficacy even in hard water. Example 2
A glyphosate composition suitable for use with an adjuvant in accordance with Example 1 was prepared by combining the following components in the relative quantities specified:
Figure imgf000008_0001
*The glyphosate acid wetcake contained approximately 86% w/w glyphosate based on glyphosate acid (11 % w/w water). The purity of the glyphosate was 96.5% on a dry basis.
The composition, which contains 540 g/L glyphosate could readily be delivered using standard pumps used by farmers and was stable in solution at temperatures of 5°C for extended periods.
GERONOL CF/AR surfactant sold by Rhodia is the 2-propanamine salt of ethoxylated alcohol phosphate ester.
The results are shown in the attached drawings.
Referring to the drawings:
Figure 1 is a bar chart comparing the relative performance of a 1 :1 volume mixture of the herbicidal composition of Example 2 and the adjuvant of Example 1 with a prior art herbicidal composition/adjuvant mixture at the recommended ratio. Figure 2 is a bar chart comparing the low use rate efficiency of a 1 :1 mixture (by volume) of the adjuvant/composition formulation of Example
1/Example 2 with the comparative adjuvant/glyphosate combination of the prior art (in the recommended mixing ratio) at the rate of grams of active ingredient per hectare.
Figure 3 is a bar chart comparing the weed control performance of the composition of the Example 2 when used with the adjuvant of Example 1 in a 1 :1 volume ratio with the prior art composition when used with the recommended surfactant adjuvant.
Figure 4 is a bar chart comparing the performance of the adjuvant/glyphosate combination of Examples 1 and 2 (1 :1 volumetric ratio) with the prior art adjuvant/glyphosate combination when used together with TRIFLUR trifluralin formulation.
Figure 5 is a chart comparing the performance of the adjuvant/glyphosate combination of Examples 1 and Example 2 (1 :1 volumetric ratio) with the prior art adjuvant/glyphosate combination when each are used with NUTRAZINE brand atrazine formulation.
Figure 1 shows the performance of the prior art herbicidal adjuvant/composition mixture is significantly reduced in hard water whereas there is little or no reduction in the efficiency of the composition of Example 1 /Example 2 at the same use rate (gai/ha). The comparison was carried out using soft mixing water (225 ppm) and hard mixing water (1000 ppm). We found that the adjuvant of the invention significantly improves herbicidal performance in hard water when the rate of application was 450g glyphosate acid equivalent per hectare.
Referring to Figure 2 it can be seen that despite lower use rates placing more pressure on the surfactant system the adjuvant/composition combination of the invention performs successfully even at low rates. We found higher efficacy thus prior art formulations of 490g/L glyphosate at equivalent low usage rates (gai/ha= grams active ingredient per hectare). As shown in Figure 3 we also found good activity on broadleaf weeds such as cape weed or clover at equivalent rates. This is a weakness of many prior art formulations.
Glyphosate products are frequently sprayed in conjunction with other pesticides but incompatibility with other pesticides is sometimes an important issue which can arise from physical effects within the spray tank or biological effects.
Biological incompatibility (antagonism) may result from interactions between herbicides resulting in poorer weed control than when the herbicides are separately applied. Figures 4 and 5 show that the glyphosate composition of the invention exhibits a high compatibility rate when compared with other high rate glyphosate compositions. Figure 4 compares the invention with prior art when each are used with a commercial Trifluralin composition. Figure 5 compares composition of the invention with the prior art when used with commercial atrazine formulation.
It is to be understood that the invention described herein above is susceptible to variations, modifications and/or additions other than those specifically described and that the invention includes all such variations, modifications and/or additions which fall within the spirit and scope of the above description.

Claims

Claims:
1. An adjuvant composition for use with a herbicide including: one or more agriculturally acceptable salts; a surfactant component including an ammonium salt of an ethoxylated alcohol phosphate ester; and an amphoteric surfactant.
2. An adjuvant composition according to claim 1 wherein the agriculturally acceptable salt is selected from the group consisting of ammonium sulphate, alkylammonium sulphate, ammonium nitrate, potassium phosphate, tetrapotassium pyrophosphate, sodium trisulphate, sodium sulphate and ammonium bicarbonate.
3. An adjuvant according to claim 1 wherein the one or more agriculturally acceptable salts include a sulphate selected from ammonium sulphate, alkylammonium sulphate or mixture thereof.
4. An adjuvant according to claim 1 including: from 5 to 30% w/w of a sulphate selected from ammonium sulphate, alkylammonium sulphate and mixture thereof; from 0.5 to 25% w/w of ammonium salt of an ethoxylated alcohol phosphate ester; and from 0.5 to 10% by w/w of amphoteric surfactant.
5. An adjuvant according to claim 4 wherein the amphoteric surfactant is a phospholipid.
6. An adjuvant composition according to claim 1 for use as a tank mix adjuvant which is free of active herbicidal compound.
7. A herbicidal composition containing one or more herbicides and an adjuvant component according to any one of the previous claims.
8. A herbicidal composition according to claim 6 wherein one or more herbicides are selected from the group consisting of glyphosate, a dinitroaniline herbicide, a triazine herbicide, a cyclohexanedione oximeherbicide, a phenoxy herbicide, an imidazoline herbicide and a pyridyloxyphenoxy herbicide.
9. A herbicidal composition according to claim 7 wherein the herbicide is a glyphosate herbicide including a mixture of the ammonium salt of glyphosate and the isopropylamine salt of glyphosate.
10. A herbicidal composition according to claim 9 wherein the weight ratio based on glyphosate acid of said isopropylamine salt to said ammonium salt is in the range of from 80:20 to 97:3.
11. A kit for preparing a herbicidal composition including a herbicide and an adjuvant for the herbicide including an ethoxylated alcohol phosphate ester wherein when equivalent volumes of the herbicide and adjuvant are mixed the mixture contains a weight ratio of herbicidal active to ethoxylated alcohol phosphate ester surfactant in the range of from 150:1 to 3:1.
12. A kit according to claim 10 wherein the herbicide is a glyphosate herbicide and the weight ratio is determined on the basis of weight of glyphosate acid.
13. A method of eradicating weeds including mixing a herbicide formulation with an adjuvant according to any one of claims 1 to 6 and applying the mixture to the weeds.
14. A method according to claim 13, wherein the mixture is diluted with water before applying the mixture to the weeds.
15. A method according to claim 12 wherein the herbicide is a glyphosate herbicide comprising a mixture of the monoisopropylamine salt of glyphosate and the ammonium salt of glyphosate wherein the ratio of glyphosate in monoisopropylamine salt form to ammonium salt form is in the range of from 80:20 to 97:3 based on glyphosate acid.
PCT/AU2000/000284 1999-10-13 2000-04-04 Adjuvant for a herbicidal composition WO2001026463A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35440/00A AU3544000A (en) 1999-10-13 2000-04-04 Adjuvant for a herbicidal composition

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPQ3393 1999-10-13
AUPQ3393A AUPQ339399A0 (en) 1999-10-13 1999-10-13 Herbicidal composition and adjuvant
AUPQ4292 1999-11-26
AUPQ4292A AUPQ429299A0 (en) 1999-11-26 1999-11-26 Adjuvant for herbicidal composition

Publications (1)

Publication Number Publication Date
WO2001026463A1 true WO2001026463A1 (en) 2001-04-19

Family

ID=25646175

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000284 WO2001026463A1 (en) 1999-10-13 2000-04-04 Adjuvant for a herbicidal composition

Country Status (2)

Country Link
AR (1) AR024814A1 (en)
WO (1) WO2001026463A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992046B2 (en) 2002-01-29 2006-01-31 Rhodia Chimie Concentrated aqueous phytopathological formulation comprising a herbicide and a betaine type surfactant
WO2007143788A1 (en) * 2006-06-14 2007-12-21 Eureka Agresearch Pty Ltd Herbicidal composition and method for removing unwanted foliage
WO2008077196A1 (en) * 2006-12-22 2008-07-03 Opal Australasia Pty Ltd Adjuvant composition
WO2008100896A3 (en) * 2007-02-12 2009-05-07 Archer Daniels Midland Co Adjuvants and methods of using them
WO2010053385A1 (en) 2008-11-06 2010-05-14 Sn Biotech Technologies Sp. Z O.O. Sp. K. A liquid, homogenous herbicide composition, a method of weed control, a method of production of liquid, homogenous herbicide composition and use of a liquid, homogenous herbicide composition for weed control
US8236730B2 (en) 2002-01-29 2012-08-07 Rhodia Chimie Aqueous herbicidal concentrate comprising a betaine type surfactant
US8410022B2 (en) 2004-08-19 2013-04-02 Monsanto Technology Llc Glyphosate salt herbicidal composition
US8492309B2 (en) 2005-05-24 2013-07-23 Monsanto Technology Llc Herbicide compatibility improvement
US8653001B2 (en) * 2005-11-14 2014-02-18 Rhodia Operations Agricultural adjuvant compostions, pesticide compositions, and methods for using such compositions
US8841235B2 (en) 2010-08-10 2014-09-23 Rhodia Operations Agricultural pesticide compositions
US9045720B2 (en) 2004-12-30 2015-06-02 Rhodia Chimie Herbicidal composition comprising an aminophosphate or aminophosphonate salt, a betaine and an amine oxide
WO2016124468A1 (en) * 2015-02-06 2016-08-11 Lamberti Spa Agrochemical adjuvant concentrate for herbicides
US9743664B2 (en) 2012-11-05 2017-08-29 Monsanto Technology Llc Low volatility herbicidal compositions
US9963368B2 (en) 2010-11-15 2018-05-08 Archer Daniels Midland Company Microemulsions and uses thereof in dispersing catalysts
CN114246179A (en) * 2021-12-27 2022-03-29 无锡颐景丰科技有限公司 Auxiliary agent suitable for microemulsion of high-salt system
WO2022214550A1 (en) * 2021-04-06 2022-10-13 Rhodia Operations Use of naphthalene sulphonate as compatibiliser in tank mix composition

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0483095A2 (en) * 1990-10-04 1992-04-29 Monsanto Company Improved formulations
US5180414A (en) * 1990-05-21 1993-01-19 Rhone-Poulenc Agrochimie Herbicidal compositions comprising n-phosphonomethylglycine and alkyl polyoxyethylene phosphoric acid ester surfactants
US5877112A (en) * 1997-08-27 1999-03-02 Helena Chemical Company Agricultural formulation
US5912209A (en) * 1993-12-17 1999-06-15 Monsanto Company Surfactants providing enhanced efficacy and/or rainfastness to glyphosate formulations

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5180414A (en) * 1990-05-21 1993-01-19 Rhone-Poulenc Agrochimie Herbicidal compositions comprising n-phosphonomethylglycine and alkyl polyoxyethylene phosphoric acid ester surfactants
EP0483095A2 (en) * 1990-10-04 1992-04-29 Monsanto Company Improved formulations
US5912209A (en) * 1993-12-17 1999-06-15 Monsanto Company Surfactants providing enhanced efficacy and/or rainfastness to glyphosate formulations
US5877112A (en) * 1997-08-27 1999-03-02 Helena Chemical Company Agricultural formulation

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992046B2 (en) 2002-01-29 2006-01-31 Rhodia Chimie Concentrated aqueous phytopathological formulation comprising a herbicide and a betaine type surfactant
US8236730B2 (en) 2002-01-29 2012-08-07 Rhodia Chimie Aqueous herbicidal concentrate comprising a betaine type surfactant
US10912302B2 (en) 2004-08-19 2021-02-09 Monsanto Technology Llc Glyphosate salt herbicidal composition
US8410022B2 (en) 2004-08-19 2013-04-02 Monsanto Technology Llc Glyphosate salt herbicidal composition
US10123538B2 (en) 2004-08-19 2018-11-13 Monsanto Technology Llc Glyphosate salt herbicidal composition
US9045720B2 (en) 2004-12-30 2015-06-02 Rhodia Chimie Herbicidal composition comprising an aminophosphate or aminophosphonate salt, a betaine and an amine oxide
US11154062B2 (en) 2005-05-24 2021-10-26 Monsanto Technology Llc Herbicide compatibility improvement
US8492309B2 (en) 2005-05-24 2013-07-23 Monsanto Technology Llc Herbicide compatibility improvement
US8653001B2 (en) * 2005-11-14 2014-02-18 Rhodia Operations Agricultural adjuvant compostions, pesticide compositions, and methods for using such compositions
US9107405B2 (en) 2005-11-14 2015-08-18 Rhodia Operations Agricultural adjuvant compostions, pesticide compositions, and methods for using such compositions
US8461082B2 (en) 2006-06-14 2013-06-11 Eureka Agresearch Pty Ltd Herbicidal composition and method for removing unwanted foliage
AU2007260586B2 (en) * 2006-06-14 2012-08-02 Elders Toll Formulation Pty Ltd Herbicidal composition and method for removing unwanted foliage
WO2007143788A1 (en) * 2006-06-14 2007-12-21 Eureka Agresearch Pty Ltd Herbicidal composition and method for removing unwanted foliage
WO2008077196A1 (en) * 2006-12-22 2008-07-03 Opal Australasia Pty Ltd Adjuvant composition
WO2008100896A3 (en) * 2007-02-12 2009-05-07 Archer Daniels Midland Co Adjuvants and methods of using them
US9416065B2 (en) 2007-02-12 2016-08-16 Archer Daniels Midland Company Adjuvants and methods of using them
EA018865B1 (en) * 2008-11-06 2013-11-29 Сн Биотек Текнолоджис Сп. З О.О. Сп. К. A liquid, homogenous herbicide composition, a method of weed control, a method of production of liquid, homogenous herbicide composition and use of a liquid, homogenous herbicide composition for weed control
WO2010053385A1 (en) 2008-11-06 2010-05-14 Sn Biotech Technologies Sp. Z O.O. Sp. K. A liquid, homogenous herbicide composition, a method of weed control, a method of production of liquid, homogenous herbicide composition and use of a liquid, homogenous herbicide composition for weed control
US8841235B2 (en) 2010-08-10 2014-09-23 Rhodia Operations Agricultural pesticide compositions
US9963368B2 (en) 2010-11-15 2018-05-08 Archer Daniels Midland Company Microemulsions and uses thereof in dispersing catalysts
US10212933B2 (en) 2012-11-05 2019-02-26 Monsanto Technology Llc Low volatility herbicidal compositions
US9743664B2 (en) 2012-11-05 2017-08-29 Monsanto Technology Llc Low volatility herbicidal compositions
US11297834B2 (en) 2012-11-05 2022-04-12 Monsanto Technology Llc Low volatility herbicidal compositions
WO2016124468A1 (en) * 2015-02-06 2016-08-11 Lamberti Spa Agrochemical adjuvant concentrate for herbicides
WO2022214550A1 (en) * 2021-04-06 2022-10-13 Rhodia Operations Use of naphthalene sulphonate as compatibiliser in tank mix composition
CN114246179A (en) * 2021-12-27 2022-03-29 无锡颐景丰科技有限公司 Auxiliary agent suitable for microemulsion of high-salt system

Also Published As

Publication number Publication date
AR024814A1 (en) 2002-10-23

Similar Documents

Publication Publication Date Title
US10912302B2 (en) Glyphosate salt herbicidal composition
EP0820231B1 (en) Glyphosate formulations containing etheramine surfactants
RU2297143C2 (en) Aqueous herbicide composition (versions) and herbicide method (versions)
WO2001026463A1 (en) Adjuvant for a herbicidal composition
CA2250301A1 (en) Herbicidal and plant growth regulant compositions and their use
NZ517124A (en) Enhanced method of killing weeds with glyphosate herbicide
US20110111958A1 (en) Liquid, homogenous herbicide composition, a method of weed control, a method of production of liquid, homogenous herbicide composition and use of a liquid, homogenous herbicide composition for weed control
WO2012027349A1 (en) Compositions and methods for improving the compatibility of water soluble herbicide salts
WO2007030312A2 (en) Agricultural compositions which enhance performance of herbicides
US20110028323A1 (en) Herbicidal Combination
NZ507379A (en) Synergistic herbicidal agents based on phosphorus containing foliar herbicides; imidazolinones and growth promoting herbicides.
NZ518149A (en) Herbicidal glyphosphate composition and adjuvant which can include a phosphate ester
EP0902622B1 (en) Herbicidal and plant growth regulant compositions and their use
AU2010296099B2 (en) Herbicidal surfactant formulations
JPH06157220A (en) Herbicidal composition
JP2004520286A (en) Herbicide composition
AU725067B3 (en) Herbicidal composition and adjuvants
AU774413B2 (en) Herbicidal composition and adjuvant
AU3544000A (en) Adjuvant for a herbicidal composition
CA2250298A1 (en) Herbicidal and plant growth regulant compositions and their use
US20040198606A1 (en) Glyphosate compositions and their use
EP1145633B1 (en) Glyphosate compositions and their use
MX2008003139A (en) Method of controlling plants.
ZA200202731B (en) Herbicidal composition and adjuvant.
CA2250344A1 (en) Herbicidal and plant growth regulant compositions and their use

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 35440/00

Country of ref document: AU

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP