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
  • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
  • A01N25/10—Macromolecular compounds
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • 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

• This invention relates to a plant treatment composition, more particularly a pesti ⁇ idal composition in which the pesticide is a herbicide, insecticide, fungicide, seed germination stimulant, plant growth regulator, a mixture of these and the like.
• Particularly preferred are compositions based on the known herbicide N-phosphonomethylglycine (N-PMG) and/or agriculturally acceptable salts thereof and mixtures of N-PMG and such agriculturally acceptable salts thereof.
• This invention also relates to a process for preparing an agriculturally useful composition.
• the herbicide N- PMG is also commonly known by the name glyphosate.
• ⁇ -S Patent Specification No. 4609148 discloses spray equipment which is said to be useful for the application of oil based herbicides.
• the document discloses that it is becoming increasingly common for herbicides to be applied in the form of water based emulsions. These are highly efficient and very small quantities, if properly applied, can be used to treat large areas. However, to be effective, the herbicides must be applied in the form of fine droplets of uniform size and distribution. The nature of the herbicide, which is commonly a viscous liquid having a viscosity, for example, of 20 to 40 centistokes, has made it difficult for this requirement to be met.
• European Patent Specification No. 0 220 902 discloses liquid, phytoactive compositions and methods of use characterised in that the composition comprises (a) an N-phosphonomethyl-N-carboxymethyl compound, (b) one or more liquid nonionic surfactant, (c) a dispersing medium for the said N-phosphonomethyl N- carboxymethyl compound and (d) one or more inert adjuvants.
• European Patent Specification No. 0 039 144 discloses pesticidal formulations said to be suitable for electrodynamic spraying and solutions suitable for use in making them.
• the pesticidal liquid formulations are said to comprise a non-polar liquid diluent and 0.5 to 80% by weight of pesticide, the formulation having a viscosity of 1 to 50 centistokes.
• N-phosphonomethylglycine is well known as a foliage acting herbicide, in particular in agriculturally acceptable salt form.
• glyphosate has low water solubility, and because of this typical commercial formulations contain a water soluble salt of glyphosate.
• glyphosate is formulated as the isopropylamine salt.
• the commercial formulation of Roundup Herbicide is labelled in many countries for this application through a variety of equipment including boom equipment, controlled droplet application, (wherein the formulation is subjected to a spinning disc), hand-held and high volume equipment and selective equipment,
• the use of Roundup herbicide is registered for use in gravity fed straying systems including those of the Nomix design, more particularly disclosed in UK published Patent Application No. 2131327 and UK published Patent Application No. 2136318 which disclose spraying equipment.
• the spraying equipment comprises a tubular support member, having a spraying head at one end and a handle at the other.
• a supply duct and an electrical lead extend through the interior of the support member to supply fluid and electrical power to a rotary atomising disc and a motor in a housing for the driving disc.
• the supply duct communicates through the handle with a container for the fluid, and the lead is connected to a battery. It is an object of the invention to provide an improved method for the application of plant treatment agents to the desired locus, e.g.
• a method of distributing a plant treatment agent comprising:
• aqueous composition comprising (a) a plant treatment agent and/or mixtures thereof and (b) a polymer in an amount sufficient to increase the flowability of the aqueous composition to a flowability at 25°C such that the time elapsed for 100ml of the composition to pass through a measurement orifice of a Ford B2 cup is in the range of from about 60 to about 100 seconds; and
• composition comprising
• a polymer in an amount sufficient to increase the flowability of the aqueous composition to a flowability at 25°C such that the time taken for 100ml of the composition to pass through a measurement orifice of a Ford B2 cup is in the range of from about 60 to about 100 seconds.
• a dispensing package for an aqueous composition comprising a collapsible container which is filled with said composition and which has an opening means through which the composition may be dispensed, said composition comprising (a) a plant treatment agent and/or mixtures thereof and (b) a polymer in an amount sufficient to increase the flowability of the aqueous composition to a flowability at 25°C such that the time taken for 100ml of the composition to pass through a measurement orifice of a Ford B2 cup is in the range of from about 60 to about 100 seconds.
• the container is a collapsible bag.
• Such contains are described in British Published Patent Application No. 2136321, which is incorporated herein by reference in its entirety.
• the Ford B2 cup test is an ASTM standard test (designated 1200/82) for determining the viscosity, more correctly the flowability, of liquids.
• the test involves maasuring the time taken for 100 ml of a liquid to pass through an orifice in the conical base of the cup, at 25°C.
• ASTM Standards- Volume 06.01 which is incorporated herein by reference in its entirety.
• the aqueous composition be discharged from the distribution element in the form of droplets, * and is most preferably discharged from the distribution element by centrifugal force.
• the distribution element is preferably rotary.
• the apparatus used for distributing the plant treatment agent in accordance with the present invention may be spraying equipment such as that manufactured by Nomix Manufacturing Co., Limited of Bristol, United Kingdom. An example of this type of spraying equipment is disclosed in British Patent Specification No. 2131327.
• the low flow rate at which the aqueous composition is permitted to pass through the orifice is preferably in the range of from about 1 to about 300ml/min. More preferably, the low flow rate is from about 5 to about 100ml/min and most preferably, the low flow rate is from about 10 to about 40ml/min. Typically, the low flow rate is about 15ral/min.
• the polymer is preferably a high molecular weight polymer such as a carboxyl vinyl polymer for example CARBOPOL (Registered Trade Mark of B.F. Goodrich Chemical Company) and should be present in an amount sufficient to stabilise the composition containing the aqueous plant treatment agent and to increase its viscosity from an initial lower flowability to a final higher desired flowability such that the time elapsed for 100ml of the composition to pass through the orifice of a Ford B2 cup lies in the range of from about 60 to about 100 seconds, preferably in the range of from about 75 to about 85 seconds.
• the polymer is preferably present in the composition in an amount no greater than about 2% by weight.
• Other polymers may be used including alginates, such as Kelgin (Registered Trade Mark) LV available from Kelco Corporation or equivalents thereof.
• the aqueous composition of the second aspect of this invention and as used in the first aspect of the invention preferably further comprises a spreading agent.
• the spreading agent is preferably a mineral oil such as a non-aromatic spirit. Where a non-aromatic mineral spirit is used, it is preferably present in an amount of from about 1 to about 200 grams per litre of the composition, more preferably from about 10 to 80 grams per litre.
• the aqueous composition of the second aspect of the present invention and as used in the method of the first aspect of the present invention may further comprise an emulsifier such as a nonylphenol-ethylene oxide condensate.
• the aqueous composition may comprise a pigment such as titanium dioxide which may be present in an amount of from about 1 to about 50 grams per litre, more preferably from about 15 to about 25 grams per litre of the composition.
• plant treatmen includes pesticides such as herbicides, insecticides, fungicides, seed germination stimulants, plant growth regulators, mixtures of these and the like.
• the plant treatment agent is preferably water soluble but it is to be appreciated that relatively water-insoluble plant treatment agents may be used.
• the aqueous composition may be a solution of the plant treatment agent, a suspension or emulsion thereof.
• the plant treatment agent employed in the first and second aspects of the present invention is preferably a herbicidal agent, which is present in the composition in a herbicidally effective amount.
• the herbicide is preferably N-PMG or an agriculturally acceptable salt thereof or mixtures thereof which may be present in an amount such as to provide from about 40 to about 240 grams, preferably from about 60 to about 160 grams of the N-PMG or N-PMG equivalent per litre in the final composition.
• the plant treatment agent may, alternatively, for example, an oxadiazon or phenoxy type herbicide such as 2,4-D or N- [ (acetylamino)methyl]-2-chloro-N-(2,6- diethylphenyDacetamide.
• N-PMG is preferably used as the isopropylamine or trimethylsulphonium salt or as the free acid N-PMG; the trialkylsulphonium salt is disclosed and described in EP-0053871 and US-4315765 and other salts of N-PMG useful in the invention are described in EP- 0057317, EP-0054832, EP-0073547, which are incorporated herein by reference in their entirety.
• any agriculturally acceptable salt of N-PMG, or mixtures thereof, or mixtures of N-PMG and its agriculturally acceptable salts may be employed.
• Other salts which may be useful in the invention are the iminourea and substituted iminourea salts such as guanidine and aminoguanidine salts.
• the N-PMG is preferably used as an aqueous solution.
• One readily available aqueous solution of the isoproylamine salt of N-PMG is known by the
• ROUNDUP additionally includes a surfactant which is an exthoxylated fatty amine (a tallow amine) to the extent of about 15% by weight of the solution.
• a surfactant which is an exthoxylated fatty amine (a tallow amine) to the extent of about 15% by weight of the solution.
• An alternative solution of N- PMG is known by the Registered Trade Mark SPACER.
• a ROUNDUP solution comprising 192 grams per litre of the isopropylamine salt be used: this is equivalent to 144 grams per litre of the free acid N-PMG.
• the mineral oil is a non-aromatic mineral spirit which is used to bring the surface tension of the composition to the desired level.
• the mineral oil is preferably present in amounts up to 200 g/litre, most preferably about 80 grams per litre of the final composition.
• the preferred carboxyl vinyl polymer is Carbopol R 1342 produced by B.F. Goodrich Chemical Company. This polymer is a fluffy white powder which is non-toxic.
• the pigment is preferably titanium dioxide. This provides the formulation with a white appearance such that the user can determine fairly readily the areas to which the composition has been applied.
• the pigment is used in amounts of up to 50, preferably up to 25 grams per litre of the final composition, most preferably about 18 grams per litre of the final composition.
• the polymer employed may assist in suspending the pigment in the composition.
• the composition may include a small amount of an emulsifier.
• the emulsifier is preferably a nonylphenol-ethylene oxide condensate, with the preferred emulsifier being Ethylan R 55 which is a nonylphenol-ethylene oxide condensate having, on average, 5.5 moles of ethylene oxide per mole of nonylphenol.
• Ethylan 55 is manufactured by Lankro Chemicals.
• the emulsifier emulsifies the aqueous and organic phases of the composition.
• an aqueous composition comprising a plant treatment agent and a viscosity modifying agent
• the plant treatment agent is preferably a herbicidal agent, present in a herbicidally effective amount.
• the herbicide is typically N-PMG or an agriculturally acceptable salt thereof.
• the N-PMG or salt thereof may be present in an amount such as to provide from about 40 to about 80 grams of the free acid or free acid equivalent per litre in the composition.
• the viscosity modifying agent may be a high molecular weight polymer such as a carboxyl vinyl polymer.
• the viscosity modifying agent may also be an alginate or other water soluble polymer.
• the composition may further comprise a spreading agent such as a mineral oil and/or a pigment such as titanium dioxide.
• a process for producing an aqueous herbicidal composition which comprises preparing an aqueous solution or dispersion of the polymer; introducing into the polymer solution the plant treatment agent and optionally the mineral oil and mixing to form an intermediate composition; dispersing the pigment in the intermediate composition and optionally diluting with additional water to form the final product.
• a process for producing an aqueous herbicidal composition comprises: preparing an aqueous solution of a polymer; introducing into the aqueous solution of the polymer a mineral oil and the herbicide N- phosphonomethylglycine or an agriculturally acceptable salt thereof; and forming a premix of the aqueous mixture of polymer, mineral oil and herbicide; dispersing a pigment in the premix; and optionally diluting with water to form the final product.
• a process for producing an aqueous herbicidal composition comprises, preparing an aqueous solution of a polymer, introducing into the aqueous solution a pesticide and mixing an optionally diluting with additional water to form a final composition such that the final composition has a viscosity at 25°C such that the time taken for 100ml of the composition to pass through a measurement orifice of a Ford B2 cup is in the range of from about 60 to about 100 seconds.
• the polymer may be introduced into a volume of water and thoroughly.mixed for a period of up to twenty-four hours or longer. It may be desirable to heat the solution to enhance the dissolution of the polymer.
• the polymer may be mixed with diluent water or a dilute solution of the plant treatment agents or herbicide.
• the polymer should be used in an amount of no greater that about 2% by weight.
• the preferred process for making the composition of the present invention is as follows: (1 ) thoroughly dissolve the desired amount of carboxyl vinyl polymer, preferably carbopol 1342, in water to form an aqueous solution of polymer;
• the resulting composition may be diluted with water to obtain the desired concentration of the final composition.
• ROUNDUP solution 400 millilitres per litre of a ROUNDUP solution comprising a 480 grams per litre aqueous solution of N- phosphonomethyl glycine (isopropylaraine salt);
• the remainder of the composition is made up with water.
• EXAMPLE 2 A composition was made using the following recipe: 158.68 grams Mon 0139 62.4% 28.85%
• Blazor red is a dye solution manufactured by Milliken.
• MON 0139 is a 62.4% by weight IPA salt of N- PMG.
• SAG 47 is a defoamer.
• the surfactant employed in this Example was an ethoglated tallow amine surfactant having a degree of ethoxylation of about 20. Components were added together in the order recited. Simple stirring was the only processing employed.
• the premix for this example comprised: 691.5 grams water 15.3 grams Kelgin LV (from Kelco)
• the composition was employed to kill weeds.
• Example 3 Another composition illustrating this invention was made and comprised: 76.4 lbs. water
• composition comprised: MON 0139 62.4% weight IPA salt of NPMG 29.05% Mon surfactant 6.71%
• Premix A comprised the thickener premix 110 lbs. water 97.90%
• Premix B of this example comprised two batches which were first prepared and then combined to form premix B.
• Premix B-1 2075 Grams water 300.06 grams Sterox NJ 109.58 grams Daxad 11G 28.7 grams Sterox NJ 205.15 grams water
• Premix B-2 comprised :
• Premix B-3 comprised :
• Premix B-2 and Premix B-3 were admixed together to form Premix b which was employed along with Premix a above to form the composition of this example.
• the composition was employed to kill weeds.
• DAXAD is a product of W. R. Grace and is a condensated naphthalene formaldehyde sulphonate
• PROXEL GXL is a product of ICI and is an microbial
• Sterox NJ is a product of Monsanto and is an ethoxylated nonylphenol.
• the surfactant used in this example was the same as that used in Example 2.
• compositions of the invention had a flowability such that 100ml passed through the measurement orifice of a Ford 62 cup in between 60 and 100 seconds.
• compositions of the present invention may be formulated in ready to use form such as in a package in accordance with the third aspect of the present invention.
• the spreading agent such as a mineral oil may be added as a final step after the premix of (i) dissolved polymer and (ii) aqueous or suspended plant treatment agent have been combined.

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• Life Sciences & Earth Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• Agronomy & Crop Science (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Toxicology (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

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• 1988
  • 1988-06-16 IL IL86777A patent/IL86777A0/xx unknown
  • 1988-06-17 BR BR888807570A patent/BR8807570A/pt unknown
  • 1988-06-17 EP EP88905400A patent/EP0367773A1/de not_active Withdrawn
  • 1988-06-17 JP JP63505092A patent/JPH02502282A/ja active Pending
  • 1988-06-17 NZ NZ225065A patent/NZ225065A/xx unknown
  • 1988-06-17 WO PCT/GB1988/000470 patent/WO1988010069A1/en not_active Application Discontinuation
  • 1988-12-21 CA CA000586712A patent/CA1330712C/en not_active Expired - Fee Related
• 1989
  • 1989-11-17 GB GB8927146A patent/GB2226760B/en not_active Expired - Fee Related
  • 1989-12-15 DK DK637389A patent/DK637389A/da not_active Application Discontinuation
  • 1989-12-15 FI FI896031A patent/FI896031A0/fi not_active IP Right Cessation

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