EP1178728A1 - Regulateur de la croissance de vegetaux - Google Patents

Regulateur de la croissance de vegetaux

Info

Publication number
EP1178728A1
EP1178728A1 EP00926613A EP00926613A EP1178728A1 EP 1178728 A1 EP1178728 A1 EP 1178728A1 EP 00926613 A EP00926613 A EP 00926613A EP 00926613 A EP00926613 A EP 00926613A EP 1178728 A1 EP1178728 A1 EP 1178728A1
Authority
EP
European Patent Office
Prior art keywords
composition
surfactant
plant growth
citric acid
growth regulant
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.)
Withdrawn
Application number
EP00926613A
Other languages
German (de)
English (en)
Inventor
John S. Lojek
Margaret Anne Lojek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ecoval Corp
Original Assignee
Ecoval Corp
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 Ecoval Corp filed Critical Ecoval Corp
Publication of EP1178728A1 publication Critical patent/EP1178728A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • A01N37/36—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 at least one carboxylic group or a thio analogue, or a derivative thereof, and a singly bound oxygen or sulfur atom attached to the same carbon skeleton, this oxygen or sulfur atom not being a member of a carboxylic group or of a thio analogue, or of a derivative thereof, e.g. hydroxy-carboxylic acids

Definitions

  • the present invention relates to aqueous compositions of acetic acid and citric acid in combination with a surfactant and to aqueous compositions of citric acid in combination with a surfactant, that may be used as a plant growth regulant.
  • growth regulants In order to be suitable for use on ornamental plants or with grains, growth regulants must be effective without causing visible damage to foliage. Damage to foliage would not be acceptable to either greenhouse growers or buyers. For instance, if a plant growth regulant caused damage such as leaf or stem burning, or twisting of leaves, it would be deemed to be unacceptable.
  • dark green colour is associated with an indication of health and vigour of the plant.
  • the green colour may be produced by feeding the plant with certain nutrients, such as nitrogen.
  • U.S. Patent No.5 705 455 which is directed to herbicidal compositions, discloses test results in which a combination of acetic acid and citric acid produced higher fresh weight in corn plants that were not damaged or killed by the herbicidal application. Higher fresh weight in corn usually means bigger plants, which is the reverse to what is needed to produce compact plants as would be obtained with a plant growth regulant.
  • a plant growth regulant in the form of an aqueous composition of acetic acid and citric acid in combination with a surfactant has now been found. Accordingly, one aspect of the present invention provides an aqueous composition comprising acetic acid and citric acid, in combination with surfactant, said composition being effective as a plant growth regulant.
  • Another aspect of the present invention provides an aqueous plant growth regulant composition of acetic and citric acids, in combination with surfactant, said composition being more effective as a plant growth regulant than any combination of one or two of acetic acid, citric acid and surfactant at the same concentration.
  • the concentration of acetic and citric acids and surfactant is such that the composition does not exhibit herbicidal properties on tomatoes.
  • the ratio of acetic acid to citric acid is in the range of 10:1 to 1 :1 on a weight basis, the concentration of acetic acid being less than 8 g/l.
  • a further aspect of the present invention provides use of aqueous compositions of acetic and citric acids in combination with surfactant as a plant growth regulant.
  • Another aspect of the present invention provides an aqueous plant growth regulant composition comprising acetic acid, citric acid and surfactant.
  • a further aspect provides an aqueous composition comprising citric acid and surfactant, said composition being effective as a plant growth regulant.
  • Yet another aspect provides use of aqueous compositions of citric acid in combination with surfactant as a plant growth regulant.
  • the present invention relates to aqueous plant growth regulant compositions of acetic and citric acid in combination with surfactant.
  • the combination of acetic and citric acids with surfactant exhibits synergistic effects as a plant growth regulant.
  • the resulting composition is more effective as a plant growth regulant than a corresponding composition of acetic acid, citric acid or surfactant alone at the same concentration or a combination of acetic acid and surfactant.
  • the present invention provides compositions of citric acid and surfactant as a plant growth regulant.
  • the combination of citric acid with surfactant exhibits synergistic effects as a plant growth regulant.
  • the resulting composition is more effective as a plant growth regulant than a corresponding composition of citric acid or surfactant alone at the same concentration.
  • the plant growth regulant compositions may be formulated so that the concentration of the acid(s) is such that the compositions do not exhibit herbicidal properties with respect to a particular plant.
  • the compositions may be formulated to not exhibit herbicidal properties with respect to cucumbers, tomatoes, cabbage, roses and peppers, broad leaf plants and/or other vegetation.
  • compositions of acetic acid, citric acid and surfactant which is a preferred embodiment.
  • a composition of the invention comprises a synergistic combination of acetic acid and citric acid, with surfactant, in aqueous solution.
  • the acetic acid component is conveniently provided by domestic white vinegar while the citric acid is conveniently provided by lemon juice or juices of other citrus fruits. It is understood, however, that industrial sources of either or both of these components may be used.
  • the composition may be formulated using glacial acetic acid.
  • the weight ratio of acetic acid to citric acid in the plant growth regulant composition may vary over a wide range, for instance, in the range of from about 10:1 to about 1 :1 , preferably in the range of 4:1 to 1 :1 , on a weight basis. In embodiments, the weight ratio of acetic acid to citric acid is in the range of 4:1 to about 2:1.
  • the plant growth regulant composition in use may contain up to
  • composition should contain at least 1 g/l of acetic acid and 0.5 g/l of citric acid. Preferred compositions contain about 4 g/l of acetic acid and 2 g/l of citric acid.
  • the plant growth regulant activity requires the combination of acetic acid and citric acid with at least one surfactant. The amount of surfactant should be at least equal to the amount of citric acid.
  • surfactants may be used. However, it is known that some surfactants exhibit herbicidal activity when used alone and such surfactants should not be used in the compositions of the invention.
  • a particularly preferred composition contains acetic acid, citric acid and a surfactant available as SpontoTM 300T.
  • Sponto 300T is understood to be an anionic/non-ionic surfactant blend, and is available from Witco. Other surfactants may be used.
  • the amount of surfactant should be in the range of 0.1-40 g/l, preferably 1-5 g/l.
  • a further composition of the present invention comprises a combination of citric acid with surfactant, in aqueous solution.
  • sources of citric acid have been discussed above.
  • a preferred surfactant is SpontoTM 300T.
  • the concentration of citric acid is in the range of 1-30 g/litre, and especially 3-10 g/litre.
  • the concentration of citric acid and surfactant should be such that the composition does not cause plant damage for the particular plant that is to be treated.
  • the plant growth regulant composition may be formulated so as to be effective on one or more of a variety of plants, and different compositions and concentrations may be preferred with some plants.
  • the present invention may be used on a wide variety of plants, especially flowering and fruit-bearing plants.
  • the present invention may be used to increase flower-set in the plants, which would lead to increased fruit-set in plants that bear fruit.
  • Examples include peppers, tomatoes, and other fruit bearing vegetables; impatients, begonias, zinnias, dianthus, marigolds and other flowering plants; corn and other fruit or seed producing plants of the grass family; and other plants that produce flowers or fruit.
  • the present invention may be used on tropical fruit-bearing plants or trees e.g. citrus trees, pineapples or the like.
  • the compositions are used as plant growth regulants on a variety of vegetation.
  • Non-Stop Tuberous Root Begonia All plant material was purchased as young seedlings in plug trays typical of the bedding plant industry. The seedlings were transplanted into individual plastic cell packs containing four cells per pack. The exceptions were the tuberous begonias, which were planted into four inch plastic pots. The growing media consisted of typical peat moss-based soil commonly used in the greenhouse industry. All experiments with flowering plants were conducted in a greenhouse maintained at 70°F night temperature. Untreated plants i.e. control plants, in all experiments were sprayed with water only.
  • Transplanted plants were placed on a greenhouse bench and were watered with water containing a water-soluble fertilizer that is commonly used in a greenhouse. After one week, the plants were sprayed with a composition of 2 g acetic acid plus 1 g citric acid plus 5 g Sponto 300T surfactant in 1000 ml of water. All plants were sprayed to runoff. After a further week, the plants were sprayed again with the same composition. The plants were then allowed to grow for three weeks before evaluation. Each experiment was replicated four times. The results obtained are given in Table 1.
  • Seedlings were planted in cell packs. Twelve-cell packs were placed on a plastic tray standard in the bedding plant industry. The plants were sprayed in similar fashion to tuberous root begonias.
  • Zinnia Plants were placed in four-inch plastic pots and allowed to grow for two weeks. Each plant was sprayed once with the composition noted above.
  • the treated and untreated plants were measured three weeks after spraying.
  • Seedlings were transplanted into cell packs and allowed to grow for two days. The seedlings were then sprayed once. After a further two weeks, the height of treated and untreated plants was measured. The colour of the plants was noted at the same time.
  • Witconol SN-90 surfactant is an ethoxylated acohol.
  • citric acid on plant branching was determined, by spraying three plants of Fuchsia (6.0 cm tall) with 5 g citric acid per litre of water. Control plants were sprayed with water only. The plants were planted in 10 inch plastic pots. The plants were allowed to grow for three months, and then were evaluated for the number of side branches. The results obtained are shown in Table 9. Each experiment was replicated three times.

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)

Abstract

L'invention concerne une composition aqueuse à base d'acide citrique ou d'acide acétique et d'acide citrique combinée à un surfactant et utilisée comme régulateur de la croissance de végétaux. Dans certains aspects, le régulateur de la croissance de végétaux peut s'utiliser pour modifier la croissance de végétaux et permettre des plantes plus compactes ainsi que pour obtenir des plantes ayant des fleurs, un rendement et une présentation générale améliorés.
EP00926613A 1999-05-14 2000-05-08 Regulateur de la croissance de vegetaux Withdrawn EP1178728A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13416299P 1999-05-14 1999-05-14
US134162P 1999-05-14
PCT/CA2000/000531 WO2000069263A1 (fr) 1999-05-14 2000-05-08 Regulateur de la croissance de vegetaux

Publications (1)

Publication Number Publication Date
EP1178728A1 true EP1178728A1 (fr) 2002-02-13

Family

ID=22462038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00926613A Withdrawn EP1178728A1 (fr) 1999-05-14 2000-05-08 Regulateur de la croissance de vegetaux

Country Status (4)

Country Link
EP (1) EP1178728A1 (fr)
AU (1) AU4531100A (fr)
CA (1) CA2373597A1 (fr)
WO (1) WO2000069263A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2303873C1 (ru) * 2006-03-22 2007-08-10 Общество с ограниченной ответственностью Научно-производственная фирма "ТОРС" Состав для стимулирования роста и развития сельскохозяйственных культур
RU2350076C1 (ru) * 2007-07-04 2009-03-27 Государственное образовательное учреждение высшего профессионального образования "Алтайский государственный техническй университет им. И.И. Ползунова" (АлтГТУ) Стимулятор роста и развития растений
CN113973821B (zh) * 2021-11-19 2023-03-31 广东省科学院南繁种业研究所 提高植物抗旱性的抗旱剂及方法
US12161113B1 (en) * 2023-03-10 2024-12-10 Ecosaveearth, Inc. Additive ingredients of synergists and surfactants provided in a single-use transporter preferably for use with weed control, insect control and mold removal compositions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5634565B2 (fr) * 1974-06-07 1981-08-11
JPH02178203A (ja) * 1988-12-28 1990-07-11 Hokko Chem Ind Co Ltd 作物の増収剤および増収方法
JPH0446104A (ja) * 1990-06-12 1992-02-17 Kankyo Riyokuka Shigen Kaihatsu Center:Kk 植物生長促進剤
JP2533010B2 (ja) * 1991-05-10 1996-09-11 磐田化学工業株式会社 農業用副資材及びその利用方法
GB9117114D0 (en) * 1991-08-08 1991-09-25 Terra Care International Corp Herbicidal composition
US5888938A (en) * 1994-07-18 1999-03-30 Ecoval Inc. Herbicidal composition and use
BR9913699A (pt) * 1998-09-15 2001-06-05 Ecoval Inc Composição inseticida

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0069263A1 *

Also Published As

Publication number Publication date
AU4531100A (en) 2000-12-05
CA2373597A1 (fr) 2000-11-23
WO2000069263A1 (fr) 2000-11-23

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