AU4239499A - Aqueous suspension concentrate comprising thidiazuron and ethephon - Google Patents
Aqueous suspension concentrate comprising thidiazuron and ethephon Download PDFInfo
- Publication number
- AU4239499A AU4239499A AU42394/99A AU4239499A AU4239499A AU 4239499 A AU4239499 A AU 4239499A AU 42394/99 A AU42394/99 A AU 42394/99A AU 4239499 A AU4239499 A AU 4239499A AU 4239499 A AU4239499 A AU 4239499A
- Authority
- AU
- Australia
- Prior art keywords
- suspension concentrate
- thidiazuron
- ethephon
- plant
- suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
Description
r/UU/U I I 28/5/91 Regulation 3.2(2)
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Application Number: Lodged: Invention Title: AQUEOUS SUSPENSION CONCENTRATE COMPRISING THIDIAZURON AND ETHEPHON
C
The following statement is a full description of this invention, including the best method of performing it known to us Hoechst Schering AgrEvo GmbH AGR 98/M 223 Dr. RI/we Description Aqueous suspension concentrate comprising thidiazuron and ethephon The invention relates to the field of plant growth regulators/defoliants, in particular to mixtures of thidiazuron and ethephon.
For a long time, thidiazuron and ethephon have been known as plant growth regulators/defoliants, in particular for use in crops of cotton (see, for example, The Pesticide Manual, 11th Edition, British Crop Protection Council, Farnham, 1997, thidiazuron entry number 703, ethephon entry number 281).
DE-A-26 46 712 discloses mixtures of thidiazuron and ethephon, and a good synergistic effect for the use as defoliant in cotton is demonstrated.
However, until now such mixtures have only been used as so-called tank mixes, which means that the mixture components are admixed only shortly prior to application.
Surprisingly, it has now been found that stable, storable suspension concentrates of thidiazuron and ethephon can be prepared. Owing to the differing stability of the two substances in acidic medium, this was unexpected. The Pesticide Manual states a storage stability in a pH range from 5 to 9 for thidiazuron, and at a pH of below 5 for ethephon.
The invention accordingly provides a suspension concentrate, comprising a) thidiazuron and ethephon, b) one or more surfactants, c) one or more thickeners and d) water.
By providing the suspension concentrates according to the invention, the disadvantages of the customary tank mixes, such as insufficient dosage reliability and low handling safety, are overcome. Furthermore, the concentrates have the advantage of reduced packaging costs.
The concentrates generally have a pH of 5, preferably g 2.
The active compounds used are known and commercially available; thidiazuron from AgrEvo, Frankfurt, Germany, and ethephon, for example, from Rhone-Poulenc, Lyon, France (see, for example, the pesticide manual and the literature mentioned therein).
C..
The active compounds are generally employed in a mass ratio of thidiazuron:ethephon of 1:5-30, preferably 1:5-15, particularly preferably 1:8-12.
The proportion of the active compounds in the suspension concentrate is generally from 5 to 80% by weight, preferably from 15 to 60% by weight.
The concentrates according to the invention may comprise, as surfactant which 20 helps to improve the dispersion properties of the particles in the solid suspension, for example a dodecyl- or tridecylbenzenesulfonate in a proportion of preferably S. from 0.01 to 12% by weight. Thus, it is possible to employ, for example, ®Maranil S: (dodecylbenzenesulfonate, Na salt) from Henkel, Dusseldorf, Germany, as paste or powder.
Suitable surfactants are furthermore polyacrylic acid derivatives, such as those which are obtainable, for example, under the trade names ®Sokalan CP 10 (BASF), the "Geropon series (HB, DA, DG) (Rh6ne-Poulenc) or the ®Dispersant series (Rh6ne-Poulenc) or the ®Degapas series (Degussa, Frankfurt, Germany).
®Sokalan CP 10 is a modified Na polyacrylate having a low molecular mass which is prepared by a special polymerization process (BASF, Ludwigshafen, Germany) Techn. Info TI/P 3039 d from 1988.
The ®Geropon products HB, DA and DG and ®Dispersant HB and FB are, according to the Rh6ne-Poulenc data sheet from 1979 and 1989 respectively, alkali metal polyacrylates, which are available both in liquid and solid form.
The ®Degapass series likewise consists of alkali metal and ammonium salts of polyacrylic acid derivatives.
Preferred surfactants are ethoxylated tristyrylphenols. In general, 0.1 to 30% by weight, preferably 0.5 to 20% by weight, of the surfactant or the surfactant mixture are added. In the case of the tristyrylphenol derivatives, the degree of ethoxylation S: can be between 10 and 40, but is preferably between 14 and 28. The tristyrylphenol 15 derivatives are sold, for example, under the trade names ®Soprophor FL, ®Soprophor CY/8, ®Soprophor S/25, ®Soprophor FL/60, ®Soprophor FLK (Rhone- Poulenc), Hoe S 2374, Hoe S 3475, Hoe S 3775 (Clariant, Basle, Switzerland).
Particular preference is given to nonionic surfactants, and ®Soprophor S/25 is very 20 particularly preferred.
The thickeners used according to the invention may be inorganic or organic in nature; they can also be combined. Suitable thickeners are, for example, those based on aluminum; xanthan, methylcellulose, polysaccharide, for example alginate, alkaline earth silicate, gelatin and polyvinyl alcohol, such as montmorillonites and their organic derivatives, for example ®Bentone EW and ®Bentone LT, Veegum, ®Rhodopol 23, ®Kelzan S or Satiaxan. Preference is given to polysaccharide-based thickeners.
The proportion of the thickener in the suspension concentrate is generally from 0.05 to 0.5% by weight, preferably from 0.1 to 0.2% by weight.
The suspension concentrate according to the invention preferably comprises one or more fillers, for example those based on silica, such as non-water-swellable kieselguhr (for example ®Diamol, from Bertram, Hamburg, Germany), or clay minerals, such as ®Kaolin 1777.
The preferred filler is ®Diamol.
The filler is generally added in an amount of from 2 to 50% by weight, preferably from 5 to 20% by weight.
Concentrates which comprise a filler generally have advantages with respect to sedimentation rate, formation of sediments and phase separation.
Furthermore, it is possible to add to the concentrate according to the invention additionally up to 25% by weight, preferably up to 15% by weight, of commercial .15 auxiliaries, such as wetting agents, defoamers, preservatives and/or antifreeze agents.
Suitable additional wetting agents are, for example, tributylphenol polyglycol ethers, such as the ®Sapogenat T brands (Clariant) or nonylphenol polyglycol ethers, such 20 as the Arkopal N brands (Clariant).
Suitable defoamers are, for example, those based on silicone, such as those of the ®Silcoolapse series (Rhine-Poulenc), SE 39 or Antischaumittel SH (Wacker).
If required, preservatives, for example those based on formaldehyde, benzoic acid and triphenyltin, are used, for example ®Kobate C.
It is furthermore also possible to add antifreeze agents, such as urea, salts, polyols (for example glycol, propylene glycol or glycerol) or sugars.
To prepare the suspension concentrates according to the invention, the components are stirred, for example with water, and the resulting coarse suspension is comminuted, if appropriate, by grinding, for example in a corundum or toothed-disk mill, to a fineness of approximately 200 pm, and the product is subsequently ground, for example in attrition bead mills or sand mills, until the particles of the suspension are preferably present in particle sizes of from 0.1 to 10 pm, particularly preferably of below 5 pm. The particle size is determined using, for example, a disk centrifuge or a Coulter counter.
Such a process likewise forms part of the subject matter of the invention, as do suspension concentrates which are obtainable by this process.
The suspension concentrate of the invention is applied in a simple manner by S diluting the concentrate with the desired amount of water, stirring and applying to ."15 the plant. The spray liquors obtained from the concentrates according to the invention are distinguished in particular by a uniform distribution of the active compounds, which remains even after standing for 24 hours.
The suspension concentrate according to the invention is particularly suitable for the 20 defoliation and for accelerating the opening of the capsule of cotton plants, which makes the use of harvesting machines considerably easier.
However, the concentrate according to the invention is also suitable for influencing the growth or for defoliating other plants.
The invention also provides a method of regulating the growth/defoliation of plants, which comprises treating the plant with an undiluted or diluted suspension concentrate according to the invention.
Dilution is preferably carried out using water, and the plant is preferably a cotton plant.
6 The invention also provides the use of a suspension concentrate according to the invention for regulating the growth/for the defoliation of a plant, preferably a cotton plant.
The application rate of the concentrate can vary within wide limits, depending on external conditions, such as temperature and humidity; it is generally from 1 to 10,000 g of total active compound/ha, preferably from 1 g to 1000 g of total active compound/ha.
Application is usually carried out after dilution with water, using, in general, from 100 to 1000 I of spray liquor per hectare. Use by the so-called LV (low volume) or ULV (ultra low volume) methods is also possible.
The concentrate according to the invention can optionally, depending on the intended purpose, be used in combination with other active compounds, such as other defoliants and crop protection agents (herbicides, insecticides, fungicides, etc.).
*Q S S. Se Activity and speed of action can optionally also be increased using additives, such as organic solvents, wetting agents and oils, which allows the required application rate to be reduced.
Of course, it is also possible to use the concentrate according to the invention for treating genetically modified plants, in particular genetically modified cotton, which contain, for example, one or more foreign genes to obtain resistance to insecticides and/or herbicides.
The content of the German Patent Application 198 34 598.4, the priority date of which is claimed by the present application, and the enclosed abstract is expressly referred to; it is incorporated into the description by reference.
The invention is illustrated in more detail by the examples, without limiting it thereby.
Examples Example 1 Formulation 1: a.
a. a a. a a..
2 a. *a Ga a Component by weight Ethephon 36.00 Thidiazuron 3.00 ®Soprophor S25 5.00 Satiaxane 0.20
H
2 0 55.80 Storage stability of formulation 1: Time by weight of thidiazuron Initial value 3.09 2 weeks at RT 3.09 2 weeks at 40 0 C 3.07 2 weeks at 54 0 C 3.05 8 weeks at RT 3.04 8 weeks at 40°C 3.04 8 weeks at 54 0 C 2.96 Example 2 Formulation 2: Component by weight Ethephon 36.00 Thidiazuron 3.00 ®Soprophor S25 5.00 OBentone LT 0.20
H
2 0 55.80 as. 0 20 Storage stability of formulation 2: Time by weight of thidiazuron Initial value 3.06 2 weeks at RT 3.02 2 weeks at 40 0 C 3.01 2 weeks at 54 0 C 3.00 8 weeks at RT 3.02 8 weeks at 40 0 C 3.00 8 weeks at 54 0 C 2.93 Example 3: Formulation 3: Component by weight Thidiazuron 2.50 Ethephon 30.00 ®Soprophor S25 4.17 "Diamol 16.66 Satiaxane (x 91) 0.17
H
2 0 (demineralized) 46.50 *5
S
S *a
S
Formulation 3 showed a particularly low sedimentation rate, neither formation of sediment nor phase separation was observed.
"Comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
Claims (10)
1. A suspension concentrate comprising a) thidiazuron and ethephon, b) one or more surfactants, c) one or more thickeners and d) water.
2. The suspension concentrate as claimed in claim 1, wherein the active compounds thidiazuron and ethephon are present in a mass ratio of 1:5 to a:*
3. The suspension concentrate as claimed in claim 1 or 2, which comprises one 9 or more nonionic surfactants. 9
4. The suspension concentrate as claimed in claim 3, wherein the surfactant is an ethoxylated tristyrylphenol. 99 The suspension concentrate as claimed in one or more of claims 1 to 4, S. 20 which additionally comprises a filler.
6. The suspension concentrate as claimed in one or more of claims 1 to which comprises one or more further auxiliaries selected from the group consisting of wetting agents, defoamers, preservatives and/or antifreeze agents.
7. A process for preparing a suspension concentrate as claimed in one or more of claims 1 to 6, which comprises mixing up the components and, if appropriate, comminuting and grinding the resulting suspension. 11
8. The process as claimed in claim 8, wherein the suspension concentrate is ground to a particle size of from 0.1 to 10 pm.
9. A suspension concentrate obtainable by mixing a) thidiazuron and ethephon, b) one or more surfactants, c) one or more thickeners and d) water, and, if appropriate, comminuting and grinding the resulting suspension. A method of regulating the growth/defoliation of a plant, which comprises treating the plant with an undiluted or diluted suspension concentrate as claimed in one or more of claims 1 to 6 and/or 9. s
11. The method as claimed in claim 7, wherein the plant is a cotton plant. f**
12. The method as claimed in claim 8, wherein the cotton plant has been genetically modified. 20 13. The use of a suspension concentrate as claimed in one or more of claims 1 to 6 and/or 9 for regulating the growth/defoliation of a plant, in particular a ****cotton plant. 0o DATED this 30th day of July 1999. HOECHST SCHERING AGREVO GMBH WATERMARK PATENT TRADEMARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN. VIC. 3122.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19834598 | 1998-07-31 | ||
DE1998134598 DE19834598A1 (en) | 1998-07-31 | 1998-07-31 | Aqueous suspension concentrate containing thidiazuron and ethephon |
Publications (2)
Publication Number | Publication Date |
---|---|
AU4239499A true AU4239499A (en) | 2000-02-24 |
AU764967B2 AU764967B2 (en) | 2003-09-04 |
Family
ID=7876013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU42394/99A Ceased AU764967B2 (en) | 1998-07-31 | 1999-07-30 | Aqueous suspension concentrate comprising thidiazuron and ethephon |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0976329B1 (en) |
AR (1) | AR029309A1 (en) |
AU (1) | AU764967B2 (en) |
BR (1) | BR9903257A (en) |
DE (1) | DE19834598A1 (en) |
ES (1) | ES2195483T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103125519A (en) * | 2013-01-17 | 2013-06-05 | 仲恺农业工程学院 | Stem-type potted plant defoliant and defoliant treatment method thereof |
CN105901010A (en) * | 2016-06-03 | 2016-08-31 | 扬州大学 | Agent special for defoliating and ripening cotton in wetland |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19911165B4 (en) * | 1999-03-12 | 2008-03-13 | Bayer Cropscience Ag | defoliants |
WO2007059870A2 (en) * | 2005-11-25 | 2007-05-31 | Bayer Cropscience Ag | Aqueous suspension concentrates of 4-benzoylpyrazole herbicides |
EP1790228A1 (en) * | 2005-11-25 | 2007-05-30 | Bayer CropScience AG | Aqueous suspension-concentrate of metribuzin |
EP1790229A1 (en) * | 2005-11-25 | 2007-05-30 | Bayer CropScience AG | Aqueous suspension-concentrates of oxadiazole herbicides |
EP1790227A1 (en) * | 2005-11-25 | 2007-05-30 | Bayer CropScience AG | Aqueous suspension-concentrates of 2,4-diamino-s-triazine herbicides |
CN101971862A (en) * | 2010-09-02 | 2011-02-16 | 袁永贵 | High-efficiency defoliating and ripening agent used before picking cotton |
CN102396482B (en) * | 2011-12-28 | 2014-01-15 | 新疆锦华农药有限公司 | Thidiazuron suspension cotton defoliating agent |
MX2012002483A (en) | 2012-02-27 | 2013-08-27 | Inst De Ecologia A C | Use of a herbicidal composition for controlling parasitic plants. |
CN102659467A (en) * | 2012-04-12 | 2012-09-12 | 广西田园生化股份有限公司 | Ethephon-containing ultra low volume liquid formulation |
NZ720483A (en) | 2013-12-11 | 2022-11-25 | Fine Agrochemicals Ltd | Water-dispersible plant growth regulating concentrate and processes for making and using same |
AU2018101611B4 (en) * | 2018-10-26 | 2022-06-09 | Adama Australia Pty Ltd | Ethephon Formulation |
CN111374141A (en) * | 2020-03-30 | 2020-07-07 | 中国农业科学院棉花研究所 | Pesticide composition for defoliation and ripening of cotton and application thereof |
CN111264550A (en) * | 2020-03-30 | 2020-06-12 | 中国农业科学院棉花研究所 | Cotton defoliating agent composition and application thereof |
CN111616157A (en) * | 2020-05-29 | 2020-09-04 | 中国农业科学院棉花研究所 | Cotton defoliation ripening composition containing thidiazuron and isoproturon and application thereof |
GB202008582D0 (en) * | 2020-06-08 | 2020-07-22 | Univ Oxford Innovation Ltd | Clay compositions |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2646712A1 (en) * | 1976-10-14 | 1978-04-20 | Schering Ag | AGENTS FOR PLANT GROWTH REGULATION |
GB2194226B (en) * | 1985-12-30 | 1990-02-07 | Rhone Poulenc Bv | Plant growth regulator dispersions |
HU207197B (en) * | 1987-07-16 | 1993-03-29 | Chinoin Gyogyszer Es Vegyeszet | Plant protecting solution and aquous suspension containing water insoluble active component |
-
1998
- 1998-07-31 DE DE1998134598 patent/DE19834598A1/en not_active Withdrawn
-
1999
- 1999-07-16 EP EP19990113891 patent/EP0976329B1/en not_active Expired - Lifetime
- 1999-07-16 ES ES99113891T patent/ES2195483T3/en not_active Expired - Lifetime
- 1999-07-29 AR ARP990103768A patent/AR029309A1/en active IP Right Grant
- 1999-07-30 BR BR9903257-0A patent/BR9903257A/en not_active Application Discontinuation
- 1999-07-30 AU AU42394/99A patent/AU764967B2/en not_active Ceased
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103125519A (en) * | 2013-01-17 | 2013-06-05 | 仲恺农业工程学院 | Stem-type potted plant defoliant and defoliant treatment method thereof |
CN105901010A (en) * | 2016-06-03 | 2016-08-31 | 扬州大学 | Agent special for defoliating and ripening cotton in wetland |
Also Published As
Publication number | Publication date |
---|---|
ES2195483T3 (en) | 2003-12-01 |
DE19834598A1 (en) | 2000-02-03 |
AR029309A1 (en) | 2003-06-25 |
EP0976329B1 (en) | 2003-03-19 |
BR9903257A (en) | 2000-04-18 |
AU764967B2 (en) | 2003-09-04 |
EP0976329A1 (en) | 2000-02-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU764967B2 (en) | Aqueous suspension concentrate comprising thidiazuron and ethephon | |
JP3822269B2 (en) | Thixotropic aqueous plant protection agent suspension | |
CA1226210A (en) | Liquid pesticidal compositions in the form of suspension concentrates | |
US7332457B2 (en) | Agricultural chemical suspensions | |
JP2894608B2 (en) | Aqueous suspension concentrate composition of pendimethalin | |
SK2582003A3 (en) | Pesticidal formulations | |
CN102595906B (en) | Herbicidal combination | |
AU2009228512A1 (en) | Surfactant compositions | |
JPH04217901A (en) | Method for controlling weeds in corn field by using mixture of acroniphene and another n-chloroacetoamide-type herbicide | |
AU663004B2 (en) | Aqueous dispersible concentrate containing linuron as active ingredient | |
AU731215B2 (en) | Plant protection agents | |
CA2652169C (en) | Stable dispersions of sulfentrazone in a continuous phase of aqueous glyphosate salt | |
CN112772663B (en) | Composition containing fluoride phenylate amide and penconazole, preparation and application thereof | |
JPS63243003A (en) | Herbicide | |
MXPA99007080A (en) | Concentrated aqueous suspension containing tidiazuron and ete | |
CN110250190A (en) | A kind of composition, preparation and its application, preparation method | |
CN112931517A (en) | Herbicide composition and application thereof | |
CN113100244B (en) | Herbicide composition and application thereof | |
IE46973B1 (en) | Herbicidal compositions | |
KR920002220B1 (en) | Composition for regulating plant growth | |
CN111213635B (en) | Composition containing bifenazate and hexythiazox | |
GB1572398A (en) | Herbicides | |
CN117694348A (en) | Nanometer water suspension agent of flonicamid and preparation method and application thereof | |
CN112931516A (en) | Herbicide composition and application thereof | |
CN117678604A (en) | Nanometer water suspending agent of cyantraniliprole, and preparation method and application thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGA | Letters patent sealed or granted (standard patent) |