WO2007098841A2 - Défoliant - Google Patents

Défoliant Download PDF

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Publication number
WO2007098841A2
WO2007098841A2 PCT/EP2007/000931 EP2007000931W WO2007098841A2 WO 2007098841 A2 WO2007098841 A2 WO 2007098841A2 EP 2007000931 W EP2007000931 W EP 2007000931W WO 2007098841 A2 WO2007098841 A2 WO 2007098841A2
Authority
WO
WIPO (PCT)
Prior art keywords
thidiazuron
plants
mixture
components
application
Prior art date
Application number
PCT/EP2007/000931
Other languages
German (de)
English (en)
Other versions
WO2007098841B1 (fr
WO2007098841A3 (fr
Inventor
Udo Bickers
Frank Sixl
Bernhard Schreiber
Helmut Fuersch
Torsten Laubner
Petra Gür
Original Assignee
Bayer Cropscience Ag
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
Application filed by Bayer Cropscience Ag filed Critical Bayer Cropscience Ag
Priority to CN2007800065470A priority Critical patent/CN101389220B/zh
Priority to BRPI0708162-6A priority patent/BRPI0708162A2/pt
Publication of WO2007098841A2 publication Critical patent/WO2007098841A2/fr
Publication of WO2007098841A3 publication Critical patent/WO2007098841A3/fr
Publication of WO2007098841B1 publication Critical patent/WO2007098841B1/fr

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
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
    • 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
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
    • A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl

Definitions

  • the invention relates to the field of defoliants, in particular thidiazuron-containing mixtures and their use in cotton crops.
  • Thidiazuron has been known for some time as a defoliant, particularly for use in cotton crops (see, e.g., "The Pesticide Manual", 13th Edition, British Crop. Protection Council, Hampshire 2003).
  • the invention therefore relates to a mixture containing
  • the mixtures according to the invention are particularly suitable for use as defoliants in cotton crops, for example by a rapid and / or increased effect or lower application rates.
  • defoliant is synonymous with “defoliant” and “Dessiccant” and also includes the known growth-regulatory effect of thidiazuron and thidiazuron-containing mixtures.
  • thidiazuron and diuron used for component (A) are known and commercially available: thidiazuron and diuron from Bayer Crop Science, Germany.
  • thidiazuron and diuron are commercially available, for example, under the name Drop Ultra® (Bayer Crop Science). Such mixtures are described for example in US 4,613,354 A.
  • the active compounds are described with information on preparation, mixing and handling, for example in "The Pesticide Manual", 13th edition (supra), and have the following entry numbers: Thidiazuron 794, Diuron 281.
  • Preferred as component (A) is thidiazuron.
  • the compounds usable for component (B) belong to the chemical class of benzofurans. This group and its efficacy as herbicides is well known and is described, for example, in "The Pesticide Manual", 13th edition (supra) Important agents (ai) from this group are benfuresates and ethofumesates They are commercially available: benfuresates and ethofumesates from the company Bayer Crop Science, Germany. The active compounds are described with information on preparation, mixing and handling, for example in “The Pesticide Manual", 13th edition (supra) and have the following entry numbers there: Benfuresate 61, ethofumesate 311. Preferred as component (B) are benfuresates and ethofumesates, especially preferred is ethofumesate.
  • the combination of the active ingredients can be used in a conventional manner, for example by spray application of a spray mixture prepared from individual formulations of the active ingredients in the tank mix or a spray mixture prepared by dilution with water from a mixed formulation of the active ingredients.
  • Particularly suitable for the application are those methods which are customary for the application of the individual active ingredients and allow a common application.
  • the application can in principle also be carried out by successive applications of the individual active ingredients (components), wherein the possible time interval can be determined in simple, routine preliminary tests. However, preferred is the common application. If appropriate, the active compounds can also be used in combination with other crop protection agents.
  • the application rate of a single active substance in the combination compared to the application rate of the respective single active substance when used alone is substantially reduced.
  • the optimum choice of the weight ratio and the application rates depends, for example, on the developmental stage, on environmental factors and climatic conditions or also on the type of additionally employed pesticide active ingredients and can be quickly determined by the person skilled in the art in simple routine tests.
  • the application rate in the general range from 10 to 500 g ai / ha is preferably 15 to 300 g ai / ha, particularly preferably in the range from 20 to 200 g ai / ha. particularly preferably 30 to 200 g ai / ha, in particular 30 to 150 g ai / ha.
  • the application rates for component (B) can vary within wide limits depending on the active ingredient and are generally between 0.1 and 5000 g a.i./ha.
  • component (B) are as application rates, for example, preferably (Benfuresate and / or ethofumesates): 1 to 1000 g a.i./ha, particularly preferably 5 to 500 g a.i./ha.
  • weight ratios of components (A): (B) can vary within wide limits, they are usually between 1: 100 and 100: 1.
  • the approximate ratio (A): (B) is 1: 0.1-10, more preferably 1: 0.5-2.
  • the invention also provides defoliants, i. Agent for causing the leaf shedding of plants containing combinations of the active ingredients (A) and (B) and customary formulation auxiliaries (C).
  • defoliants i. Agent for causing the leaf shedding of plants containing combinations of the active ingredients (A) and (B) and customary formulation auxiliaries (C).
  • WP wettable powder
  • SP water-soluble powders
  • EC emulsifiable concentrates
  • EW emulsions
  • SC suspension concentrates
  • SC oil- or water-based dispersions
  • CS dusts
  • GR granules
  • WG water-dispersible granules
  • SG water-soluble granules
  • ULV ultra-low-volume formulations
  • microcapsules and WSBs water-soluble bags
  • the necessary formulation aids such as inert materials, surfactants, solvents and other additives, are also known and described, for example, in: Watkins, "Handbook of Insecticides Dust Diluents and Carriers", 2nd ed., Darland Books, Caidwell N.J., H.v. Olphen, "Introduction to Clay Colloid Chemistry”; 2nd Ed., J. Wiley & Sons, N.Y .; C. Marsden, “Solvents Guide”; 2nd Ed., Interscience, N.Y. 1963; McCutcheon's "Detergents and Emulsifiers Annual", MC Publ.
  • Injectable powders are preparations which are uniformly dispersible in water and contain surfactants of the ionic and / or nonionic type (wetting agents, dispersants), eg polyoxyethylated alkylphenols, polyoxethylated fatty alcohols, polyoxethylated fatty amines, fatty alcohol polyglycol ether sulfates, alkanesulfonates, alkylbenzenesulfonates, sodium lignosulfonate , 2,2'-dinaphthylmethane-6,6'-disulfonic acid sodium, dibutylnaphthalenesulfonate sodium or oleoylmethyltaurine acid.
  • surfactants eg polyoxyethylated alkylphenols, polyoxethylated fatty alcohols, polyoxethylated fatty amines, fatty alcohol polyglycol ether sulfates, alkane
  • Emulsifiable concentrates are prepared by dissolving the active ingredients in an organic solvent, e.g. Butanol, cyclohexanone, dimethylformamide, xylene or else higher-boiling aromatics or hydrocarbons, or mixtures of the organic solvents with the addition of one or more ionic and / or nonionic surfactants (emulsifiers).
  • organic solvent e.g. Butanol, cyclohexanone, dimethylformamide, xylene or else higher-boiling aromatics or hydrocarbons, or mixtures of the organic solvents with the addition of one or more ionic and / or nonionic surfactants (emulsifiers).
  • alkylarylsulfonic acid calcium salts such as calcium dodecylbenzenesulfonate or nonionic emulsifiers
  • fatty acid polyglycol esters alkylaryl polyglycol ethers, fatty alcohol polyglycol ethers, propylene oxide-ethylene oxide condensation products, alkyl polyethers, sorbitan esters such as e.g. Sorbitan fatty acid esters or polyoxethylenesorbitan esters, such as polyoxyethylene sorbitan fatty acid esters.
  • Dust is obtained by grinding the active ingredients with finely divided solid
  • Fabrics e.g. Talc, natural clays such as kaolin, bentonite and pyrophyllite, or
  • Suspension concentrates may be water or oil based.
  • Emulsions for example oil-in-water emulsions (EW)
  • EW oil-in-water emulsions
  • Granules can either be prepared by atomizing the active ingredients onto adsorptive, granulated inert material or by applying active substance concentrates by means of adhesives, e.g. Polyvinyl alcohol, polyacrylic acid sodium or mineral oils, on the surface of carriers such as sand, kaolinites or granulated inert material. Also, the active ingredients in the usual manner for the production of fertilizer granules - optionally in admixture with fertilizers - granulated.
  • adhesives e.g. Polyvinyl alcohol, polyacrylic acid sodium or mineral oils
  • Water-dispersible granules are generally prepared by the usual methods such as spray drying, fluidized bed granulation, plate granulation, mixing with high-speed mixers and extrusion without solid inert material.
  • the mixtures according to the invention contain from 0.1 to 99% by weight, in particular from 0.1 to 95% by weight, of active compounds of component (A) and / or (B).
  • the drug concentration is e.g. about 10 to 90 wt .-%, the balance to 100 wt .-% consists of conventional formulation ingredients.
  • the concentration of active ingredient may be about 1 to 90% by weight.
  • Dust-like formulations contain e.g. 1 to 80, usually 5 to 60 wt .-% of active ingredient.
  • Sprayable solutions for example 0.05 to 80, usually 2 to 50 wt .-% of active ingredient.
  • the active ingredient content depends, in part, on whether the active compound is liquid or solid and which granulating aids, fillers, etc. are used.
  • the content of active ingredient is, for example, between 1 and 95% by weight, usually between 10 and 80% by weight.
  • the active substance formulations mentioned optionally contain the in each case conventional adhesion, wetting, dispersing, emulsifying, penetrating, preserving, antifreeze and solvents, fillers, carriers and dyes, defoamers, evaporation inhibitors and the pH and the viscosity influencing agents.
  • the formulations present in commercial form are optionally diluted in a customary manner, e.g. in wettable powders, emulsifiable concentrates, dispersions and water-dispersible granules by means of water, and then applied to the plants.
  • This also includes special application variants, as are customary in cotton cultivation, e.g. the application by plane. Dust-like preparations, ground or scattered granules and sprayable solutions are usually no longer diluted with other inert substances before use.
  • the invention also relates to the use of the components of the mixtures or agents according to the invention as defoliants, i. for effecting leaf shedding of plants, preferably in suitable crops, such as cotton, sunflowers or potatoes. Particularly preferred is the use as defoliant in cotton crops.
  • the invention likewise provides a process for defolianting a plant, preferably a crop, particularly preferably a cotton plant, which comprises treating the plant with the components of a mixture according to the invention or an agent according to the invention.
  • the invention also provides the use of the components of the mixtures according to the invention or agents for reducing the re-expulsion of Plants, preferably in suitable crops, such as cotton, sunflowers or potatoes. Particularly preferred is the use for reducing re-emergence in cotton crops.
  • the invention likewise provides a process for reducing the re-expulsion of a plant, preferably a crop, particularly preferably a cotton plant, which comprises treating the plant with the components of a mixture according to the invention or an agent according to the invention.
  • mixtures or agents and the methods for the treatment of genetically modified (transgenic) plants are used, such plants containing, for example, one or more foreign genes to achieve insecticidal and / or herbicidal resistance.
  • TDZ thidiazuron
  • Cotton seeds of the variety "Carmen” were sown in a depth of 1 cm and in a climate chamber (16 hours light, temperature, day: 26 ° C, nighttime: 20 0 C) to 8-10 leaf stage cultivated.
  • the plants were treated on a laboratory spraying track with spray liquors of thidiazuron and thidiazuron with combination partners.
  • the amount of water used for the spray application was 300 l / ha. After treatment, the plants were placed back in the climatic chamber.

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)
  • Cosmetics (AREA)

Abstract

Un mélange renfermant (A) du thidiazuron, ou du thidiazuron et du diuron, et (B) un ou plusieurs composés du groupe du benzofurane, de préférence le benfuresate et/ou l'éthofumesate, est approprié comme agent de défoliation et/ou pour la réduction des ré-excroissances, en particulier dans les cultures de coton.
PCT/EP2007/000931 2006-02-24 2007-02-03 Défoliant WO2007098841A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2007800065470A CN101389220B (zh) 2006-02-24 2007-02-03 脱叶剂
BRPI0708162-6A BRPI0708162A2 (pt) 2006-02-24 2007-02-03 desfolhante

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006009101A DE102006009101A1 (de) 2006-02-24 2006-02-24 Defoliant
DE102006009101.9 2006-02-24

Publications (3)

Publication Number Publication Date
WO2007098841A2 true WO2007098841A2 (fr) 2007-09-07
WO2007098841A3 WO2007098841A3 (fr) 2008-03-20
WO2007098841B1 WO2007098841B1 (fr) 2008-05-22

Family

ID=38329091

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/000931 WO2007098841A2 (fr) 2006-02-24 2007-02-03 Défoliant

Country Status (6)

Country Link
CN (1) CN101389220B (fr)
AR (1) AR059611A1 (fr)
BR (1) BRPI0708162A2 (fr)
DE (1) DE102006009101A1 (fr)
PE (1) PE20071274A1 (fr)
WO (1) WO2007098841A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106070279A (zh) * 2016-06-03 2016-11-09 华南农业大学 一种植物生长调节剂噻苯隆·敌草隆静电液剂及其制作、用途和使用方法
CN110833073B (zh) * 2019-11-27 2021-08-31 中国农业科学院棉花研究所 一种含噻苯隆和l-赖氨酸的棉花脱叶催熟组合物

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1271659A (en) * 1968-05-24 1972-04-26 Fisons Ltd 2,3-dihydrobenzofurans and physiologically active compositions containing them
US4292068A (en) * 1978-12-16 1981-09-29 Fisons Limited Herbicidal method
US4613354A (en) * 1982-06-11 1986-09-23 Schering Aktiengesellschaft Composition for defoliating plants
US6444613B1 (en) * 1999-03-12 2002-09-03 Hoechst Schering Agrevo Gmbh Defoliant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5665673A (en) * 1988-12-29 1997-09-09 Anderson; Richard J. Potentiating herbicidal compositions
US5895773A (en) * 1993-02-18 1999-04-20 Fenderson; John M. Herbicidal compositions comprising dimethenamid and a pyridazinone herbicide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1271659A (en) * 1968-05-24 1972-04-26 Fisons Ltd 2,3-dihydrobenzofurans and physiologically active compositions containing them
US4292068A (en) * 1978-12-16 1981-09-29 Fisons Limited Herbicidal method
US4613354A (en) * 1982-06-11 1986-09-23 Schering Aktiengesellschaft Composition for defoliating plants
US6444613B1 (en) * 1999-03-12 2002-09-03 Hoechst Schering Agrevo Gmbh Defoliant

Also Published As

Publication number Publication date
WO2007098841B1 (fr) 2008-05-22
BRPI0708162A2 (pt) 2011-05-17
CN101389220B (zh) 2012-12-05
DE102006009101A1 (de) 2007-09-06
WO2007098841A3 (fr) 2008-03-20
PE20071274A1 (es) 2008-01-30
CN101389220A (zh) 2009-03-18
AR059611A1 (es) 2008-04-16

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