WO1991006216A1 - Procede de defoliation et de dessiccation du coton - Google Patents

Procede de defoliation et de dessiccation du coton Download PDF

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Publication number
WO1991006216A1
WO1991006216A1 PCT/US1990/006282 US9006282W WO9106216A1 WO 1991006216 A1 WO1991006216 A1 WO 1991006216A1 US 9006282 W US9006282 W US 9006282W WO 9106216 A1 WO9106216 A1 WO 9106216A1
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WO
WIPO (PCT)
Prior art keywords
cotton
compound
defoliating
desiccating
composition
Prior art date
Application number
PCT/US1990/006282
Other languages
English (en)
Inventor
Billy R. Corbin, Jr.
Original Assignee
Valent U.S.A. Corporation
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 Valent U.S.A. Corporation filed Critical Valent U.S.A. Corporation
Publication of WO1991006216A1 publication Critical patent/WO1991006216A1/fr

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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
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
    • A01N37/32—Cyclic imides of polybasic carboxylic acids or 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
    • A01N39/00—Biocides, pest repellants or attractants, or plant growth regulators containing aryloxy- or arylthio-aliphatic or cycloaliphatic compounds, containing the group or, e.g. phenoxyethylamine, phenylthio-acetonitrile, phenoxyacetone
    • A01N39/02—Aryloxy-carboxylic acids; Derivatives thereof
    • A01N39/04—Aryloxy-acetic acids; Derivatives 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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/84—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,4

Definitions

  • the present invention relates to a method of using N- aryl tetrahydrophthalimides for cotton foliage desiccation and defoliation.
  • plant-growth regulating agents generally refers to compounds which advantageously alter the normal growth pattern of plants.
  • growth-regulating desiccants and defoliants are particularly desirable to facilitate picking of the cotton bolls.
  • Such agents must desiccate and/or defoliate without harming the cotton bolls and preferably permit the continued growth of the bolls while acting on the foliage.
  • the growth regulator will cause the plant to both desiccate and defoliate, thus greatly facilitating picking.
  • the plant-growth regulating compounds utilized in the method of the present invention are represented by the formulas I, II and III:
  • the above compound II has an asymmetric carbon atom and hence exists as optical isomers.
  • the respective optical isomers and mixtures thereof are represented by the above formula and are encompassed within the invention.
  • the compounds of the formulas I, II and III exhibit outstanding cotton desiccating and defoliating activity and do not harm the cotton bolls.
  • the present invention provides compositions comprising a cotton defoliating and desiccating effective amount of the aforedescribed compounds and an agriculturally acceptable carrier.
  • the invention also provides methods for desiccating and defoliating cotton which comprise treating growing cotton plants with a desiccating and defoliating effective amount of the aforedescribed compounds.
  • the compounds of the formulas (I) , (II) and (III) and their salts exhibit cotton plant desiccating and defoliating activity.
  • the above compounds are applied at a rate of about 1 to 100 grams, preferably about 5 to 40 grams per acre and are applied directly to the foliage of the cotton plant.
  • the compounds can be applied undiluted, in actual practice they are generally applied as a composition or formulation comprising an effective amount of the compound(s) and an acceptable carrier.
  • An acceptable carrier is one which does not significantly adversely affect the growth-regulating effect achieved by the active compounds, save to dilute it, and does not significantly adversely affect the cotton bolls and is generally nontoxic to the environment in the amounts used.
  • the composition contains about from 0.1% to 50% by weight of the compound of Formula (I) and/or (II) and/or (III) .
  • formulations containing the compound of the formula (I) as active ingredient may be water- dispersible and contain up to about 50% weight/volume of active ingredient.
  • formulations containing the compound of the formula (I) or (II) as active ingredient may be flowable fluid concentrates containing up to about 20% weight/volume of active ingredient.
  • Compound (III) is conveniently formulated as an emulsifiable concentrate typically containing up to 10% wt/vol. of Compound (III) . Concentrates can also be made having higher concentrations designed for dilution prior to application.
  • the carrier can be a solid, liquid, or aerosol.
  • the final compositions in field use can take the form of granules, powders, dusts, solutions, emulsions, slurries, aerosols, and the like, which may be suitably diluted with water for spraying.
  • Suitable solid carriers which can be used include, for example, natural clays (such as kaolin, attapulgite, montmorillonite, etc.), talcs, pyrophyllite, diatomaceous silica, synthetic fine silica, calcium aluminosilicate, tricalcium phosphate, and the like. Also, organic materials, such as, for example, walnut shell flour, cotton-seed hulls, wheat flour, wood flour, wood bark four, and the like can also be used as carriers.
  • Suitable liquid diluents which can be used include, for example, water, organic solvents (e.g., hydrocarbons such as benzene, toluene, dimethylsulfoxide, kerosene, diesel fuel, fuel oil, petroleum naphtha, etc.), and the like.
  • Suitable conventional aerosol carriers which can be used include conventional aerosol carriers such as halogenated alkanes, etc.
  • the composition can also preferably contain various promoters and surface-active agents which enhance the rate of transport of the active compound into the plant tissue such as, for example, organic solvents, wetting agents and oils (e.g. , paraffin oils) which can increase the ultimate desiccating or defoliating effect.
  • the paraffin oil or wax can be conveniently used with the carrier (for example, water) at concentration of about from 0.25% to 5% by weight of the total composition.
  • the surface-active agent can be anionic, cationic or non-ionic in character.
  • the composition can also contain various compatible adjuvants, stabilizers, conditioners, insecticides, fungicides, and if desired, other compatible cotton growth-regulating compounds.
  • Plant-growth-regulating tests were made using the following methods.
  • 1 through 6 were liquids of the active ingredient as a liquid in water containing 1% v/v Agridex (a commercial oil spreading agent) .
  • Control 7 was a control (Control A) of Thidiazuron (a commercial cotton defoliant) in water containing 1% v/v Agridex.
  • Control 10 was a control (Control B) of DEF 6 (a commercial organophosphate cotton defoliant) as an emulsified concentrate.
  • A Thidiazuron, in water containing 1% v/v Agridex.
  • B DEF 6, emulsified concentrate, in water.
  • Cotton % Leaf Desiccation grams 2 Days 4 Days Formulation a.i./A After Appln. After Appl .
  • DEF 6 Commercial organophosphate defoliant.
  • GRAMOX Gramoxone, PARAQUAT defoliant formulation sold by ICI. Formulation 16 is in water containing 0.25% v/v of X-77.
  • Formulation 17 is in water containing 1% v/v Agridex.
  • Formulations 11 through 17 were applied as a spray
  • Formulations 12 through 15 were applied in water containing 1% v/v Agridex.
  • Formulations 1 and 2 were a water dispersable formulation of the active ingredient (i-e. Compound I) containing 1X v/v Agridex (a co ⁇ i ⁇ ercial oil spreading agent).
  • Formulations 3 through 6 were liquids of the active ingredient (re
  • Formulation 7 was a control of DEF-6 (a commercial organophosphate cotton defoliant) as an emulsifiable concentrate. Formulations 1 through 7 were applied as a foliar spray at 20 gal./acre. Air temperature 56 ⁇ F, rel. humidity 94X, soil temp.
  • DEF-6 a commercial organophosphate cotton defoliant
  • Tables 1 and 2 show that at application rates as low as 5 gm. active ingredient/acre of compounds of the invention (I or II) , cotton defoliation and leaf desiccation 17 days after application are comparable to that of Control B (at 680 gm/acre) and better than Control A (at 91 gm/acre) . At 7 days after application compounds I and II (at 5 gm/acre) are better than Control A and Control B.
  • Table 3 shows that at application rates as low as 5 gm./acre the compounds of the invention are comparable to both controls (respectively applied at 91 g./acre and 680 g./acre) .
  • Tables 4 and 5 show that Compound II applied at 5 gm/acre is comparable to the controls with respect to total cotton yield and percent of yield harvested on the first pick. Compound I is comparable to the controls when applied at a rate of 10 g./acre.
  • Table 6 shows comparative leaf desiccation of cotton and morning-glory, a weed which is a problem particularly at the time of cotton harvesting.
  • the twining nature of morning-glory causes it to sprawl up the cotton plants and portions become harvested with the cotton. If the morning-glory is green, it imparts color to the cotton fibers, thus lowering the quality of the harvested product.
  • Table 6 shows that Compound I, applied as low as 5 g./acre, is comparable or better than the controls (formulations 16 and 17) for desiccation of both cotton and morning-glory.
  • Tables 7, 8 and 9 show that Compound III also gave comparable cotton defoliation, desiccation and yield at 20 g/acre to 680 g/acre of the control desiccant.

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

Les N-aryl tétrahydrophtalimides sont utiles en tant que défoliants et agents de dessiccation du coton.
PCT/US1990/006282 1989-10-31 1990-10-30 Procede de defoliation et de dessiccation du coton WO1991006216A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42941489A 1989-10-31 1989-10-31
US429,414 1989-10-31

Publications (1)

Publication Number Publication Date
WO1991006216A1 true WO1991006216A1 (fr) 1991-05-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/006282 WO1991006216A1 (fr) 1989-10-31 1990-10-30 Procede de defoliation et de dessiccation du coton

Country Status (2)

Country Link
AU (1) AU643238B2 (fr)
WO (1) WO1991006216A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484941A (en) * 1981-09-01 1984-11-27 Sumitomo Chemical Company, Limited Tetrahydrophthalimides, and their production and use as herbicides
US4640707A (en) * 1984-07-23 1987-02-03 Sumitomo Chemical Company, Ltd. Tetrahydrophthalimides and their herbicidal use

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484941A (en) * 1981-09-01 1984-11-27 Sumitomo Chemical Company, Limited Tetrahydrophthalimides, and their production and use as herbicides
US4640707A (en) * 1984-07-23 1987-02-03 Sumitomo Chemical Company, Ltd. Tetrahydrophthalimides and their herbicidal use

Also Published As

Publication number Publication date
AU6728590A (en) 1991-05-31
AU643238B2 (en) 1993-11-11

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