WO2019070027A1

WO2019070027A1 - Agent for reducing amount of irrigation of plants, and method for reducing amount of irrigation of plants

Info

Publication number: WO2019070027A1
Application number: PCT/JP2018/037216
Authority: WO
Inventors: 鍾明金
Original assignee: 国立研究開発法人理化学研究所; アクプランタ株式会社
Priority date: 2017-10-05
Filing date: 2018-10-04
Publication date: 2019-04-11
Also published as: JPWO2019070027A1; JP2022097560A

Abstract

Provided is a means for reducing the amount of irrigation of plants without causing a substantial adverse effect on the growth of the plants. One aspect of the present invention relates to an agent for reducing the amount of irrigation of plants, the agent containing acetic acid or a salt thereof, or a solvate of these as an active ingredient. Another aspect of the present invention relates to a preservative for cut flowers, the preservative containing acetic acid or a salt thereof, or a solvate of these as an active ingredient. Other aspects of the present invention relate to an agrochemical composition for reducing the amount of irrigation of plants, which contains acetic acid or a salt thereof, or a solvate of these and one or more agrochemically permitted components, a method for reducing the amount of irrigation of plants, and a method for controlling growth of plants.

Description

Reducing agent for plant irrigation, and method for reducing plant irrigation

The present invention relates to an agent for reducing the amount of irrigation of plants which contains acetic acid as an active ingredient, and a method for reducing the amount of irrigation of plants.

Water is an essential element as well as nutrition in plant growth and life support. For example, in crop cultivation, the water supply operation, i.e. irrigation, is a very important operation because it can affect the yield and quality of crops. However, supplying the necessary water over the cultivation period of the crop places a heavy burden on farmers both in time and effort. Therefore, if the amount of irrigation of plants can be reduced, the burden on farmers can be reduced, and as a result, the production cost of crops can be reduced.

On the other hand, water shortages due to global climate change in recent years have serious impacts on agriculture, such as crop degradation and yield reduction. Excessive water deficits in plants can be drought stress for plants. In plants, various drought stress responsive gene groups exist, and it has been suggested that they are involved in acquiring resistance to drought stress.

In such a case, it is possible to avoid the influence of the drought stress by improving the drought stress tolerance of the plant itself. As a means to improve drought stress tolerance of plants themselves, mention may be made of creation of a transgenic plant in which a drought stress response gene has been modified, and application of a chemical or biological regulator to improve drought stress tolerance.

For example, Patent Document 1 is a method of improving drought stress tolerance of a plant, which comprises applying acetic acid of 10 mM or more to the roots of the plant by irrigation, and growing the plant under drought stress conditions. Describe the method. According to the document, the method can improve the drought stress tolerance of the treated plants so that they can be grown even under drought stress conditions as compared with the same control plants grown under drought stress conditions and in the absence of acetic acid. Write down.

Non-patent document 1 stimulates the jasmonic acid signaling pathway to trigger a transformation of metabolic flux dynamically from glycolysis to acetic acid synthesis, thereby causing a network of drought responses in which plants acquire drought tolerance. Describe. The document describes that the switch of this network in Arabidopsis directly depends on histone deacetylase 6 (HDA6). The document describes that external acetic acid promotes de novo jasmonic acid synthesis and acetylation enrichment of histone H4 to influence the priming of the jasmonic acid signaling pathway for plant drought tolerance. The document also describes that external acetic acid application has improved drought tolerance in Arabidopsis thaliana, rape, corn, rice and wheat plants.

U.S. Patent No. 9,258,954

In the cultivation of plants, if the amount of irrigation can be reduced while maintaining the growth of plants, it is possible to reduce both the time and labor burden on farmers who grow plants. In addition, the cost of water can be reduced because the consumption of water is reduced. Therefore, reducing the amount of irrigation of the plants can result in a reduction in the cost of producing the plants.

In the cultivation of plants, the amount of irrigation is greatly affected not only by the cultivation environment but also by the amount of water absorbed by the plants. For this reason, if the water absorption amount of the plant can be reduced while maintaining the growth of the plant, the irrigation amount of the plant can be reduced. However, no means have been known for reducing the water absorption of plants without substantially producing undesirable effects on plant growth. For example, as described above, it is known that application of acetic acid can improve drought stress tolerance in plants (Patent Document 1 and Non-Patent Document 1). However, the effect of acetic acid application on plants grown under normal growth conditions, ie non-drying stress conditions, has not been clarified. For example, in plants in which drought stress tolerance has been improved by the application of acetic acid, it has not been clarified whether the amount of absorbed water can fluctuate.

Therefore, it is an object of the present invention to provide a means by which the irrigation volume of plants can be reduced without substantially producing undesirable effects on the growth of the plants.

The present inventors examined various means for solving the above-mentioned subject. The inventors have found that acetic acid involved in drought stress tolerance of plants can reduce the water absorption of plants under normal growth conditions, ie non-drying stress conditions. In addition, the inventor has found that plants can grow well even when the amount of irrigation is reduced. The present inventors have completed the present invention based on the above findings.

That is, the gist of the present invention is as follows.

(1) An agent for reducing plant irrigation, comprising acetic acid or a salt thereof, or a solvate thereof as an active ingredient.
(2) The agent for reducing the amount of watering on plants according to the embodiment (1), which further contains one or more solvents containing at least water, and having a pH in the range of 4 to 8.
(3) The embodiment described above which further contains one or more solvents containing at least water, and acetic acid or a salt thereof in the range of 0.01 to 0.5% by volume relative to the total volume, or a solvate thereof The agent for reducing the amount of irrigation of plants according to 1) or (2).
(4) An agrochemical composition for reducing irrigation of a plant, comprising acetic acid or a salt thereof, or a solvate thereof and one or more agriculturally acceptable components.
(5) The agrochemical composition according to the above embodiment (4), further comprising one or more solvents containing at least water, and having a pH in the range of 4-8.
(6) The embodiment described above which further contains one or more solvents containing at least water, and acetic acid or a salt thereof in the range of 0.01 to 0.5% by volume relative to the total volume, or a solvate thereof 4) or the agricultural chemical composition as described in (5).
(7) Applying an agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof to a plant, a material for applying to the plant, or the soil, medium or culture solution from which the plant grows A method of reducing the amount of irrigation of the plant, including:
(8) obtaining one or more pieces of information on plant growth;
The agent for reducing the amount of watering of a plant according to any one of the embodiments (1) to (3) based on the acquired one or more pieces of information or the agent according to any one of the embodiments (4) to (6) Determining conditions for applying the agrochemical composition to the plant, the material for applying to the plant, or the soil, medium or culture solution from which the plant grows.
A method of managing the growth of said plant, comprising
(9) A preservative for cut flowers containing acetic acid or a salt thereof, or a solvate thereof as an active ingredient.
(10) The cut flower preservative according to the embodiment (9), which further contains one or more solvents containing at least water, and having a pH in the range of 4 to 8.
(11) The embodiment described above which further contains one or more solvents containing at least water, and acetic acid or a salt thereof in the range of 0.01 to 0.5% by volume relative to the total volume, or a solvate thereof 9) A preservative for cut flowers according to (10) or (10).

According to the present invention, it is possible to provide a means by which the amount of irrigation of plants can be reduced without substantially causing adverse effects on plant growth.

Problems, configurations, and effects other than the above are clarified by the description of the following embodiments.

The present specification includes the contents described in the specification and / or drawings of Japanese Patent Application No. 2017-195288 which is the basis of the priority of the present application.

FIG. 1 is a diagram showing the appearance and water absorption of cut flowers in a control area, a 0.1 volume% acetic acid treated area and a 0.2 volume% acetic acid treated area. (A): a photograph showing the overall appearance of the cut flower at the start of the test, (b): a photograph showing the overall appearance of the cut flower after 5 days of growth, (c): a stem of the cut flower after 5 days of growth Photograph showing the appearance of the vicinity of the cutting part and the test solution. FIG. 2 is a view showing the appearance of cut flowers in a control area, a 0.1 volume% acetic acid treated area and a 0.2 volume% acetic acid treated area. (A): A photograph showing the overall appearance of the cut flower at the start of the test, (b): A photograph showing the overall appearance of the cut flower after 7 days of growth. FIG. 3 is a view showing the appearance of cut flowers in the control area, 0.1 volume% acetic acid-treated area and 0.2 volume% acetic acid-treated area after growth for 5 days. FIG. 4 is a diagram showing the appearance of potted seedlings in a control, 0.1% by volume acetic acid-treated and 0.2% by volume acetic acid-treated group after growing for 4 weeks. FIG. 5 is a view showing the appearance of potted seedlings in a control, 0.1% by volume acetic acid-treated and 0.2% by volume acetic acid-treated group after growth for 4 weeks. (A): A photograph showing the overall appearance of potted seedlings in the control, 0.1% by volume acetic acid-treated and 0.2% by volume acetic acid-treated groups, (b) Fruit formed in the potted seedlings in 0.2% by volume acetic acid-treated ( Photo showing mini tomato). FIG. 6 is a graph showing the survival rates of tomato plants in the untreated area, control area and acetic acid application area. FIG. 7 is a view showing the appearance of tomato plants in an untreated area, a control area and an acetic acid application area in the test period. (A): A picture of tomato plants in each section at the time of transplantation, (b): A picture of tomato plants in each section on day 15 after transplantation, (c): A picture of tomato plants in each section on day 22 after transplantation .

Hereinafter, preferred embodiments of the present invention will be described in detail.

The inventors have found that acetic acid involved in drought stress tolerance of plants can reduce the water absorption of plants under normal growth conditions, ie non-drying stress conditions. In addition, the inventor has found that plants can grow well even when the amount of irrigation is reduced. It is a novel finding found by the present inventor that the application of acetic acid exerts such an effect under normal growth conditions, that is, non-drying stress conditions. Therefore, one aspect of the present invention relates to an agent for reducing the amount of irrigation of plants, which contains acetic acid or a salt thereof, or a solvate thereof as an active ingredient. One embodiment of this aspect is an agent for reducing the amount of water absorption of plants, which contains acetic acid or a salt thereof, or a solvate thereof as an active ingredient. By applying the agent for reducing the amount of irrigation of a plant of the present embodiment to a plant, the amount of water absorption of the plant can be reduced, and as a result, the amount of irrigation of the plant can be reduced.

When the agent for reducing the amount of irrigation of plants according to one embodiment of the present invention is applied to a cut flower which is a part of a plant, the amount of irrigation and / or water absorption of the cut flower is reduced to maintain the freshness. It can be saved. Therefore, another aspect of the present invention relates to a preservative for cut flowers that contains acetic acid or a salt thereof, or a solvate thereof as an active ingredient. By applying the preservative of cut flowers of this embodiment to cut flowers, the amount of irrigation and / or water absorption of the cut flowers can be reduced, and the cut flowers can be preserved while maintaining the freshness as a result.

By applying the agent for reducing the amount of irrigation of a plant of one embodiment of the present invention to a plant, the amount of irrigation and / or the water absorption of the plant can be reduced. In addition, by applying the preservative for cut flowers according to one embodiment of the present invention to cut flowers, the amount of irrigation and / or water absorption of the cut flowers can be reduced, and the cut flowers can be preserved while maintaining the freshness as a result. . Therefore, another aspect of the present invention relates to an agrochemical formulation or a pesticide containing acetic acid or a salt thereof, or a solvate thereof as an active ingredient. By applying to the plant the agent for reducing the amount of irrigation of a plant, the agricultural chemical preparation or the pesticide according to each aspect of the present invention, the amount of irrigation and / or the amount of irrigation for the plant without substantially causing adverse effects on plant growth. The amount of water absorption can be reduced. In addition, by applying the preservative, agricultural chemical preparation or pesticide of the cut flower of each aspect of the present invention to the cut flower, the amount of watering and / or water absorption of the cut flower substantially does not produce an undesirable influence on the growth of the cut flower. The cut amount can be reduced and the cut flowers can be preserved while maintaining the freshness as a result.

In each aspect of the present invention, acetic acid used as an active ingredient is a safe and inexpensive compound used not only for industrial applications but also for food applications and agricultural applications such as wood vinegar. Therefore, by carrying out each aspect of the present invention, it is possible to reduce the amount of irrigation and / or water absorption of the plant safely and at low cost without substantially causing adverse effects on plant growth. .

In each aspect of the present invention, the acetic acid used as an active ingredient not only includes itself but also its salts. As a salt of acetic acid, for example, a salt with a cation such as sodium ion, potassium ion, calcium ion, magnesium ion, zinc ion, or substituted or non-substituted ammonium ion is preferable. When acetic acid is in the form of the above-mentioned salt, the compound can be used without substantially reducing the irrigation and / or water absorption of the plant and the safety for the plant.

In each aspect of the present invention, the acetic acid used as an active ingredient includes not only itself or its salts but also their solvates. Examples of the solvent capable of forming a solvate with acetic acid or a salt thereof include, but are not limited to, water, or a lower alcohol (eg, 1 to 6 such as methanol, ethanol or 2-propanol (isopropyl alcohol)). Alcohols having the number of carbon atoms), higher alcohols (eg, alcohols having 7 or more carbon atoms such as 1-heptanol or 1-octanol), dimethyl sulfoxide (DMSO), organics such as ethanolamine or ethyl acetate Solvents or mixtures thereof are preferred. When acetic acid or a salt thereof is in the form of a solvate with the above solvent, the compound is used without substantially reducing the plant's irrigation and / or water absorption reducing effect and plant safety. can do.

In each aspect of the present invention, “reducing the amount of irrigation of a plant” refers to applying the present invention to a population of plants to make it impossible to grow (dead), grow poorly (for example, whole plant or part thereof (eg, for example) Undesirable effects on plant growth, such as whitening or yellowing of leaves or flowers, reduction of root length or number of leaves, or reduction of growth rate, or reduction of plant weight or crop yield 90% or less, preferably 85% or less, more preferably 80% or less, still more preferably 70% or less, particularly preferably, substantially without generation as compared to the group of control plants to which the present invention is not applied Means that the amount of irrigation can be reduced to 50% or less, more particularly to 25% or less. By carrying out each aspect of the present invention, it is possible to reduce the amount of watering of the plant to the above-mentioned range without substantially producing an undesirable influence on the growth of the plant.

In each aspect of the present invention, “reducing the water absorption amount of a plant” refers to applying the present invention to a population of plants to be incapable of growing (withering), poor growth (for example, whole plant or part thereof (for example, Undesirable effects on plant growth, such as whitening or yellowing of leaves or flowers, reduction of root length or number of leaves, or reduction of growth rate, or reduction of plant weight or crop yield 90% or less, preferably 85% or less, more preferably 80% or less, still more preferably 70% or less, particularly preferably, substantially without generation as compared to the group of control plants to which the present invention is not applied Means that the water absorption of the plant can be reduced to 50% or less, more particularly preferably 25% or less. By carrying out each aspect of the present invention, it is possible to reduce the water absorption of the plant to the above-mentioned range without substantially producing an undesirable influence on plant growth.

In each aspect of the present invention, the amount of irrigation and the amount of water absorption of plants can be evaluated by the following means, but not limited thereto. For example, the plants of interest are grown in a defined amount of test solution (containing water and optionally normal nutrient components) under normal growth conditions, ie under non-drying stress conditions. After growth for a certain period of time, the volume of the test solution which has been reduced, ie the amount of water absorption, is measured. The test is carried out using the agent for reducing irrigation of plants according to each aspect of the present invention, an agrochemical preparation or a test solution containing a pesticide (test area), or a test solution not containing them (control area), and a control The water absorption of the ward and the water absorption of the test ward are compared. The difference between the water absorption of the control area and the water absorption of the test area is estimated to be the amount of irrigation that can be reduced in the test area. By such means, the reduction effect of the irrigation amount and the water absorption amount in the test area can be determined.

Alternatively, the amount of irrigation and the amount of water absorption of plants can also be evaluated by the following means. For example, plants of interest are grown in culture broth or soil under normal growth conditions, ie non-drying stress conditions, with application of a predetermined amount of test solution at predetermined intervals. The test is carried out using a predetermined amount of the agent for reducing the amount of irrigation water of each aspect of the present invention, an agrochemical preparation or a test solution containing a pesticide (test area), or a test solution not containing them (control area) Do. The difference between the volume of the test solution of the control and the volume of the test solution of the test without substantially producing an adverse effect on the growth of the plant, comparing the plant of the control and the plant of the test, Estimate the amount of irrigation and absorption that can be reduced in the test area. By such means, the reduction effect of the irrigation amount and the water absorption amount in the test area can be determined.

In each aspect of the present invention, the reduction effect of the irrigation and / or water absorption of the plant is an effect on the growth itself of the plant, for example, elongation of stem or leaf or root, increase in number of leaves, promotion of flowering or fruiting, flower or Growth promoting effects such as increasing the number of fruits, increasing plant weight or crop yield, greening, or promoting parturition may or may not be included. For example, in each aspect of the present invention, the reduction effect of the irrigation amount and / or the water absorption amount of the plant specifically reduces the irrigation amount and / or the water absorption amount of the plant while substantially promoting the growth of the plant. Includes Alternatively, in each aspect of the present invention, the reduction effect of the irrigation amount and / or the water absorption amount of the plant specifically reduces the irrigation amount and / or the water absorption amount of the plant without substantially promoting the growth of the plant. Include. In any case, embodiments of each aspect of the present invention are encompassed.

It has been found that application of acetic acid or a salt thereof, or a solvate thereof to a plant may promote growth of the plant. Therefore, in a specific embodiment of each aspect of the present invention, an agent for reducing plant irrigation, an agrochemical formulation or an agrochemical can be used to promote plant growth. In this case, promotion of plant growth includes, for example, elongation of stems and leaves or roots, increase in the number of leaves, promotion of flowering or fruiting, increase in the number of flowers or fruits, increase in plant weight or crop yield, greening, Or promotion of parturition, in particular, elongation of stems and leaves or roots, promotion of flowering or fruiting, or increase in the number of flowers or fruits. In a specific embodiment of each aspect of the present invention, the agent for reducing the amount of irrigation of plants, the agrochemical preparation or the pesticide is applied to the plants not only to reduce the amount of irrigation and / or water absorption of the plants but also It can promote the growth of plants.

The agent for reducing the amount of irrigation of plants according to each aspect of the present invention, a preservative for cut flowers, an agrochemical preparation or a pesticide is, for example, solid (eg powder or particulate), liquid (eg solution or suspension) or gas It can be used in any form as such. The agent for reducing the amount of irrigation of plants according to each aspect of the present invention, a preservative for cut flowers, an agrochemical preparation or a pesticide is preferably used in the form of a liquid such as a solution or a suspension. By applying the agent for reducing the amount of irrigation of a plant, the agricultural chemical preparation or the pesticide according to each aspect of the present invention to the plant in the form described above, the amount of irrigation for the plant without substantially causing adverse effects on plant growth. And / or the amount of water absorption can be reduced. In addition, by applying the preservative, agricultural chemical preparation or pesticide of the cut flower of each aspect of the present invention to the cut flower, the amount of watering and / or water absorption of the cut flower substantially does not produce an undesirable influence on the growth of the cut flower. The cut amount can be reduced and the cut flowers can be preserved while maintaining the freshness as a result.

In the agricultural chemical preparation or agricultural chemical of each aspect of the present invention, acetic acid or a salt thereof, or a solvate thereof may be used alone as an active ingredient, and used in combination with one or more agriculturally acceptable ingredients. You may The agrochemical formulations or pesticides of each aspect of the present invention can be formulated into various dosage forms commonly used in the art, depending on the desired method of application. Therefore, the agrochemical formulation or agrochemical according to each aspect of the present invention is also in the form of an agrochemical composition comprising acetic acid or a salt thereof, or a solvate thereof and one or more agriculturally acceptable components. It can also be provided by The agriculturally acceptable ingredients used in the agrochemical composition of this embodiment include solvents or carriers, excipients, binders, solubilizers, solubilizers, stabilizers, thickeners, thickeners, lubricants, surface active agents. Mention may be made of agents, oily liquids, buffers, bactericides, antifreezes, antifoams, colorants, antioxidants, additives, fertilizers, further agents etc. Agriculturally acceptable solvents or carriers include water, mineral oil fractions such as kerosene or diesel, oils of plant or animal origin, cyclic or aromatic hydrocarbons (eg paraffins, tetrahydronaphthalenes, alkylated naphthalenes or the like) Derivatives of or alkylated benzenes or derivatives thereof, alcohols (eg methanol, ethanol, propanol, butanol, ethylene glycol, glycerol or cyclohexanol), ketones (eg cyclohexanone) or amines (eg N-methylpyrrolidone), Alternatively, agriculturally acceptable solvents or liquid carriers such as mixtures thereof are preferred, and one or more solvents comprising at least water are more preferred. As the fertilizer, an organic fertilizer such as oil cake or cow dung, or an inorganic fertilizer such as ammonium sulfate, lime nitrogen, or phosphorus phosphate is preferable.

When the agent for reducing the amount of irrigation of plants of each aspect of the present invention, the preservative for cut flowers, the agricultural chemical preparation or the pesticide further contains one or more solvents containing at least water, irrigation of plants of each aspect of the present invention The amount of reducing agent, cut flower preservative, agrochemical preparation or pesticide preferably has a pH in the range of 4 to 8, more preferably in the range of 5 to 7.5, still more preferably in the range of 6 to 7. The agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the preservative for cut flowers, the agricultural chemical preparation or the pesticide preferably has a pH in the above range at the time of application to the target plant. The agent for reducing irrigation of plants according to each aspect of the present invention, cut flower preservative, agricultural chemical preparation or pesticide has a pH such as hydrochloric acid, nitric acid, sulfuric acid, sodium hydroxide, potassium hydroxide, ammonia water or ammonium acetate It may be adjusted using an acid, an alkali or a buffer. Alternatively, the pH of the above-mentioned range is adjusted using the pH reducing effect of soil, medium or culture solution to which the agent for reducing irrigation of plants of each aspect of the present invention, preservative of cut flowers, agricultural chemical preparation or pesticide is applied. You may In this case, at the time of application, even if the pH of the plant water reducing agent, cut flower preservative, agricultural chemical preparation or pesticide according to each aspect of the present invention is outside the above range before application to the target plant , May be adjusted to the pH range. The agent for reducing irrigation of plants according to each aspect of the present invention, preservative for cut flowers, agricultural chemical preparation or pesticide when the pH is outside the above range at the time of application: inability to wither (dead), poor growth (for example, plant) Plant whitening or yellowing of whole or part thereof (eg leaves or flowers), reduction of root length or reduction of leaf number, or lodging, reduction of growth rate or reduction of plant weight or crop yield It may cause undesirable effects on growth. The agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the agricultural chemical preparation or the pesticide has a pH in the above range, whereby the amount of irrigation of the plants and the amount of irrigation for the plants are substantially prevented. And / or the amount of water absorption can be reduced. In addition, when the preservative, agricultural chemical preparation or pesticide of cut flowers of each aspect of the present invention has a pH in the above range, the amount of irrigation of the cut flower and / or Alternatively, the cut water can be stored while reducing the amount of water absorption and as a result maintaining the freshness.

When the agent for reducing the amount of irrigation of plants of each aspect of the present invention, the preservative for cut flowers, the agricultural chemical preparation or the pesticide further contains one or more solvents containing at least water, irrigation of plants of each aspect of the present invention The amount of reducing agent, cut flower preservative, agricultural chemical preparation or pesticide is preferably in the range of 0.01 to 0.5% by volume, more preferably in the range of 0.05 to 0.5% by volume, still more preferably 0.05 to 0.2% by volume relative to the total volume %, Or in the range of 0.075 to 0.25% by volume, particularly preferably in the range of 0.09 to 0.2% by volume, particularly preferably in the range of 0.1 to 0.2% by volume of acetic acid or a salt thereof, or a solvate thereof. When the content of the agent for reducing the amount of irrigation of plants of each aspect of the present invention, the preservative for cut flowers, the acetic acid or its salt in agrochemical preparations or pesticides, or the solvate thereof exceeds the upper limit, it can not grow ( Dead), poor growth (eg, whitening or yellowing of whole plant or part thereof (eg, leaves or flowers), reduction of root length or reduction of leaf number, or lodging), reduction of growth rate, or plant weight or Unfavorable effects on plant growth can occur, such as reduced crop yields. The agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the agricultural chemical preparation or the pesticide has an acetic acid or a salt thereof in the content within the above range, or an undesirable influence on the growth of plants by having a solvate thereof. The amount of irrigation and / or water absorption of the plant can be reduced substantially without production. In addition, the preservative of the cut flower of each aspect of the present invention, the agricultural chemical preparation, or the agrochemical has an acetic acid or a salt thereof in the content within the above range, or a solvate thereof, thereby causing undesirable effects on the growth of the cut flower. It is possible to reduce the amount of irrigation and / or water absorption of the cut flowers and, as a result, preserve the cut flowers while maintaining the freshness.

When the agricultural chemical composition of the present embodiment contains one or more additives, the additives include organic acids such as citric acid, malic acid and propionic acid, glycine, glutamic acid, isoleucine, proline, methionine and asparagine Mention may be made of amino acids such as acids, vitamins such as ascorbic acid, alpha-tocopherol and folic acid, and nucleic acids such as DNA and RNA. Even when the agrochemical composition of the present embodiment contains one or more additives as described above, the amount of watering and / or the amount of watering the plant without substantially causing adverse effects on the growth of the plant. The amount of water absorption can be reduced.

When the agricultural chemical composition of the present embodiment contains one or more additional agents, the additional agents include auxin, gibberellin, cytokinin, 2-chloroethyl phosphonic acid (trade name: Esrel (registered trademark)), carbide, Mention may be made of plant hormones, phytochemical regulators and pesticides commonly used in the art, including benzyl adenine, brassinosteroids, strigolactones and jasmonic acid etc. Even when the agrochemical composition of the present embodiment contains one or more additional agents as described above, the amount of watering and / or irrigation of the plant without substantially producing undesirable effects on the growth of the plant. The amount of water absorption can be reduced.

In each aspect of the present invention, the target plant is not particularly limited. To various plants including angiosperms and gymnosperms, the agent for reducing the amount of irrigation of plants of each aspect of the present invention, a preservative for cut flowers, an agricultural chemical preparation or a pesticide can be applied. In each aspect of the present invention, plants to be applied include, but are not limited to, for example, asteraceae plants such as chrysanthemum and gerbera, solanaceous plants such as potato, tomato and eggplant, rapeseed and rape Such as Brassicaceae plants, gramineous plants such as rice, corn, wheat, sugar cane and barley, legumes such as soybean, convolvulus such as morning glory, willows such as poplar, castor bean, cassava and Jatropha-like borage family, sweet potato-like convolvulus family, orange and lemon-like botanical family, cherry blossom and rose-like rose family, phalaenopsis-like orchid family, bollflower-like boletus Family, primroses like cyclamen, violets like pansy , Liliaceous plants such as lilies, cypresses such as sugar beets, grapevines, cypresses such as cedars and cypresses, cypresses such as olives and persimmons, and pines such as Japanese red pines Family plants can be mentioned. The plant includes not only whole plants (ie, complete plants) but also tissues or organs (eg, cut flowers or vegetative propagation organs such as rhizomes, tuberous roots, corms or runners), cultured cells and / or callus, etc. It may be part of the plant. In addition, the agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the agricultural chemical preparation or the pesticide is the whole or a part of the plant at any growth stage including pre-emergence or post-emergence (for example, seeds, seedlings or It can be applied to the whole or part of a mature plant). By applying the agent for reducing the amount of irrigation of plants according to each aspect of the present invention, an agricultural chemical preparation or a pesticide to the plants as described above, irrigation of the plants without substantially causing adverse effects on the growth of the plants. Amount and / or water absorption can be reduced. In addition, by applying the preservative, agricultural chemical preparation or pesticide of cut flowers of each aspect of the present invention to cut flowers of plants as described above, the cut flowers can be substantially prevented from having undesirable effects on growth. The amount of irrigation and / or water absorption can be reduced, and as a result, the cut flowers can be preserved while maintaining the freshness.

The agent for reducing the amount of irrigation of a plant, the agricultural chemical preparation or the pesticide according to each aspect of the present invention is not only the plant itself but also a material for applying to the plant, or soil, culture medium or culture from which the plant grows It can be applied to the solution. Therefore, another aspect of the present invention relates to a plant, a material for applying to the plant, or a plant from which an agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof is applied. The present invention relates to a method for reducing the amount of irrigation of plants, which comprises applying to soil, culture medium or culture solution. In the method of the present embodiment, the applied acetic acid or a salt thereof, or a solvate thereof may be an agent for reducing the amount of irrigation of plants according to each aspect of the present invention having the characteristics described above, an agrochemical preparation or a pesticide. Just do it. Also, in the method of the present embodiment, the material for applying to plants is not limited, and various materials commonly used in the art such as water, fertilizer, soil, culture medium or culture solution are used. Can be mentioned. The plant in the growing stage as described above, a material for applying to the plant, or the soil, medium or culture solution from which the plant is grown therefrom, the agent for reducing the amount of irrigation of the plant of each aspect of the present invention, agrochemical By applying a formulation or pesticide, it is possible to reduce the amount of irrigation and / or absorption of water of the plant without substantially producing undesirable effects on the growth of the plant.

An agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof, particularly an agent for reducing the amount of irrigation of plants according to each aspect of the present invention, an agricultural chemical preparation or a pesticide, before and / or after reducing the irrigation of plants. Or during that time, it can be applied to the plant itself or a material for applying to the plant, or the soil, medium or culture solution from which the plant grows. Applying an agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof, especially an agent for reducing the amount of irrigation of plants according to each aspect of the present invention, an agricultural chemical preparation or a pesticide while reducing the irrigation of plants Is preferred. By applying an agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof at the above time, especially an agent for reducing the amount of irrigation of plants according to each aspect of the present invention, an agricultural chemical preparation or a pesticide, the growth of plants The amount of irrigation and / or water absorption of the plant can be reduced without substantially causing the undesirable effects of

In one embodiment, the method of this aspect optionally comprises, in addition to the agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof, a material for applying a further agent to a plant, said plant, Or it may further include applying to soil, a culture medium, or a culture solution from which the plant grows. Preferably, the additional agent is an additional agent of the agrochemical composition described above. In this case, a plant, a material for applying to the plant, or a soil from which the plant is grown, a culture medium or a plant for applying the agriculturally effective amount of acetic acid or a salt thereof or a solvate thereof and a further agent thereto. The order of application to the culture solution is not particularly limited. For example, an agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof and a further agent simultaneously (as a single or separate preparation) a plant, a material for applying to the plant, or It may be applied to the soil, medium or culture solution on which the plant is grown, or may be applied sequentially. In addition to the agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof, by applying an additional agent to the plant etc., substantially no adverse effect on the growth of the plant occurs. The amount of irrigation and / or the amount of water absorption can be reduced.

The agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the preservative for cut flowers, the agricultural chemical preparation, or the dosage form of the agrochemical is not particularly limited. It can be formulated into dosage forms such as emulsions, wettable powders, solutions, water solvents, powders, powders, pastes or granules, which are commonly used in the art. In each aspect of the present invention, acetic acid or a salt thereof, or a solvate thereof is contained or applied in an agriculturally effective amount. In each aspect of the present invention, the agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof is, for example, in the range of 0.01 to 0.5% by mass based on the total mass at the time of application, The range of 0.05 to 0.5% by mass with respect to the total mass at the time of application, and typically, the range of 0.05 to 0.2% by mass or the range of 0.075 to 0.25% by mass with respect to the total mass at the time of application More typically, it is in the range of 0.09 to 0.2% by mass with respect to the total mass at the time of application, in particular in the range of 0.1 to 0.2% by mass with respect to the total mass at the time of application. For example, when the agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the agrochemical preparation or the pesticide is in the form of a liquid form, an agriculturally effective amount of acetic acid or a salt thereof or a solvate thereof is For example, it is in the range of 0.01 to 0.5% by volume based on the total volume at the time of application, usually in the range of 0.05 to 0.5% by volume based on the total volume at the application, typically at the time of application In the range of 0.05 to 0.2% by volume or in the range of 0.075 to 0.25% by volume, and more typically in the range of 0.09 to 0.2% by volume relative to the total weight at the time of application, In particular, it is in the range of 0.1 to 0.2% by volume relative to the total mass at the time of application.

In plant cultivation, based on the growing condition of the plant, the agent for reducing the irrigation quantity of the plant of each aspect of the present invention, the agricultural chemical preparation or the pesticide is appropriately set by applying conditions to the plant etc. The growth of the plant can be stably managed while reducing the amount of irrigation and / or water absorption of the plant. Therefore, another aspect of the present invention is to obtain one or more pieces of information on plant growth (hereinafter also referred to as “information acquisition step”), and to obtain one or more pieces of information based on the obtained one or more pieces of information. The agent for reducing irrigation of a plant according to each aspect of the present invention, an agricultural chemical preparation or a pesticide, preferably the agricultural chemical composition according to one aspect of the present invention to the plant, a material for applying to the plant, or the plant The present invention relates to a method for managing the growth of the plant, which comprises determining the conditions to be applied to the growing soil, the culture medium or the culture solution (hereinafter, also described as “application condition determination step”).

One or more pieces of information on plant growth acquired in the information acquisition step is not limited, but, for example, elongation of stem or leaf or root, increase in number of leaves, promotion of flowering or fruiting, flower or fruit Various information on growth promoting effects such as increase in number, increase in plant weight or crop yield, planting, or parturition, as well as inviability (death), poor growth (eg whole plant or part thereof) Unfavorable effects on plant growth such as whitening or yellowing (eg leaves or flowers), reduction of root length or reduction of leaf number, or lodging, reduction of growth rate, or reduction of plant weight or crop yield We can mention various information about. By acquiring one or more pieces of information exemplified above, the growth state of a plant can be evaluated.

The conditions for applying the agent for reducing the amount of irrigation of plants according to each aspect of the present invention, the agricultural chemical preparation or the pesticide, preferably the agrochemical composition according to one aspect of the present invention, which are determined in the application condition determination step It is suitably set so that the amount of irrigation and / or water absorption of the plant can be reduced by carrying out the application. The conditions to be determined in this step are, for example, the composition, pH and application rate of the agent for reducing irrigation of plants according to each aspect of the present invention, agricultural chemical preparation or pesticide, preferably the agricultural chemical composition according to one aspect of the present invention It can be selected from one or more conditions selected from the group consisting of and the application time, and the content of acetic acid or its salt contained as an active ingredient, or a solvate thereof. Specific values of these conditions can be appropriately set from the range exemplified in the present specification. Plant irrigation volume reduction agent, agrochemical preparation or pesticide according to each aspect of the present invention, preferably by determining appropriate conditions for applying the agrochemical composition of one aspect of the present invention The growth of the plant can be stably managed while reducing the amount of water absorption.

In the method of managing plant growth of this embodiment, the number and order of the information acquisition process and the application condition determination process are not particularly limited. For example, the information acquisition step and the application condition determination step may be performed once in this order, and the information acquisition step, the application condition determination step, and then the additional information acquisition step may be performed in this order. As in the information acquisition process, the first application condition determination process, the second information acquisition process, and the second application condition determination process, the combination of the information acquisition process and the application condition determination process may be repeatedly performed a plurality of times. .

By implementing the method of managing the growth of the plant of this embodiment, the agent for reducing the amount of irrigation of the plant of each aspect of the present invention, the agricultural chemical preparation or the pesticide is applied to the plant or the like based on the growth state of the plant. Conditions can be set appropriately to stably manage the growth of the plant while reducing the amount of irrigation and / or water absorption of the plant.

As described in detail in the present specification, according to the present invention, an agent for reducing the amount of watering of plants, which contains cheaply available acetic acid or a salt thereof, or a solvate thereof as an active ingredient, a preservative for cut flowers, agriculture Chemical formulations or pesticides can be provided. Therefore, by applying to the plant the agent for reducing the amount of irrigation of a plant, agricultural chemical preparation or pesticide according to each aspect of the present invention, safely and at low cost without substantially causing adverse effects on plant growth. The amount of irrigation and / or water absorption of the plant can be reduced. In addition, by applying the preservative, agricultural chemical preparation or pesticide of the cut flower of each aspect of the present invention to the cut flower, it is possible to safely and at low cost without substantially causing adverse effects on the growth of the cut flower. The amount of irrigation and / or water absorption can be reduced, and as a result, the cut flowers can be preserved while maintaining the freshness.

Hereinafter, the present invention will be more specifically described using examples. However, the technical scope of the present invention is not limited to these examples.

<I: Reduction test of irrigation volume for cut flowers (1)>
A commercially available spray chrysanthemum cut flower (breed: spray mum, a plant which the same producer shipped at the same time) was prepared. The four cut flowers were grown in 500 mL of the test solution at room temperature for 5 days. The volume of the test solution after growth was measured. The test solution is water (control), 0.1% by volume aqueous acetic acid (0.1% by volume acetic acid-treated, acetic acid: water = 1: 1000, pH not adjusted) or 0.2% by volume aqueous acetic acid (0.2% by volume acetic acid-treated) , Acetic acid: water = 1: 500, pH not adjusted). Acetic acid used glacial acetic acid for commercial food addition (Koshiba Pharmaceutical Co., Ltd., Tokyo), and water used tap water, respectively.

The appearance and water absorption of cut flowers in the control area, 0.1 volume% acetic acid treated area and 0.2 volume% acetic acid treated area are shown in FIG. In the figure, (a) is a photograph showing the overall appearance of the cut flower at the start of the test, (b) is a photograph showing the overall appearance of the cut flower after growth for 5 days, (c) is It is a photograph which shows the appearance near a cutting part of the stem of a cut flower after 5 days of growth, and a test solution. As shown in FIGS. 1 (a) and 1 (b), no significant difference was observed in the growth of the plants in the control area and the 0.1 volume% acetic acid-treated area. On the other hand, in the case of the 0.2 volume% acetic acid-treated area, a remarkable difference was observed in the growth of the plant body such as yellowing of leaves as compared with the control area. The volume of the test solution after growth for 5 days was about 50 mL for the control. On the other hand, the volume of the test solution after 5 days of growth was about 120 mL or about 150 mL for the 0.1 volume% acetic acid-treated group and the 0.2 volume% acetic acid-treated group, respectively (FIG. 1 (c)) White arrow). That is, the water absorption of cut flowers was about 450 mL in the control group, while about 380 mL or about 350 mL in the 0.1 volume% acetic acid-treated group and 0.2 volume% acetic acid-treated group, respectively It was about 84% or about 78%) with respect to the area.

From the results of this test, it was shown that water absorption of plants can be reduced by applying acetic acid. In particular, it has been shown that the application of a 0.1% by volume aqueous acetic acid solution can reduce the water absorption of plants without substantially causing adverse effects on plant growth.

<II: Reduction test of irrigation volume for cut flowers (2)>
A commercial Gerbera cut flower (variety: sunglow, a plant shipped by the same producer at the same time) was prepared. Four strains of cut flowers were grown in a room temperature at room temperature in 8 mL of the test solution for 2 days. The remaining test solution was then discarded and replaced with 500 μL of fresh test solution. Cut flowers were grown in the room at room temperature for an additional 5 days (total 7 days) while changing the test solution daily as described above. The test solution is water (control), 0.1% by volume aqueous acetic acid (0.1% by volume acetic acid-treated, acetic acid: water = 1: 1000, pH not adjusted) or 0.2% by volume aqueous acetic acid (0.2% by volume acetic acid-treated) , Acetic acid: water = 1: 500, pH not adjusted). Acetic acid and water used were the same as in the above I, respectively.

The appearance of cut flowers in the control area, 0.1 volume% acetic acid treated area and 0.2 volume% acetic acid treated area is shown in FIG. In the figure, (a) is a photograph showing the overall appearance of the cut flower at the start of the test, and (b) is a photograph showing the overall appearance of the cut flower after 7 days of growth. As shown in FIG. 2 (a) and (b), in the control area and the 0.1 volume% acetic acid-treated area, flower lodging (neck breakage) was observed in 75% or more of the plants. Also, as compared with the plants at the start of the test, brown discoloration was observed in the uninvolved flowers. On the other hand, in the case of the 0.2% by volume acetic acid-treated area, approximately 100% of the plants grew well, and no flower lodging or discoloration was observed.

From the results of this test, it was shown that the application of acetic acid can reduce the amount of irrigation of the plant without substantially causing adverse effects on the growth of the plant.

<III: Reduction test of irrigation volume for cut flowers (3)>
A commercially available spray chrysanthemum cut flower (breed: spray mum, a plant which the same producer shipped at the same time) was prepared. The four cut flowers were grown in 500 mL of the test solution at room temperature for 5 days. The volume of the test solution after growth was measured. The test solution is water (control), 0.1% by volume aqueous acetic acid (0.1% by volume acetic acid-treated, acetic acid: water = 1: 1000, pH 6 to 7) or 0.2% by volume aqueous acetic acid (0.2% by volume acetic acid-treated) Acetic acid: water = 1: 500, pH 6-7). The pH of the aqueous acetic acid solution was adjusted using KOH aqueous solution and pH paper. Acetic acid and water used were the same as in the above I, respectively.

The appearance of cut flowers in the control area, 0.1 volume% acetic acid-treated area and 0.2 volume% acetic acid-treated area after growing for 5 days is shown in FIG. As shown in FIG. 3, in the control area, 0.1 volume% acetic acid-treated area and 0.2 volume% acetic acid-treated area, all plants grew well, and flowering or discoloration was hardly observed. Particularly, in the case of the 0.1 volume% acetic acid-treated group and the 0.2 volume% acetic acid-treated group, the stem portion was elongated as compared with the control group. Further, similarly to the test results of the above-mentioned I, in the case of the 0.1 volume% acetic acid treated area and the 0.2 volume% acetic acid treated area, a decrease in the amount of water absorption was observed as compared with the control.

From the results of this test, it is shown that application of an aqueous solution of acetic acid having a pH of 6 to 7 can reduce the amount of water absorbed by plants while promoting the growth of plants without substantially causing adverse effects on the growth of plants. It was done.

<IV: Reduction test of irrigation volume for cherry tomato seedlings>
Nine commercially available mini tomato seedlings (variety: mini carol) were prepared. The seedlings were transplanted into plastic pots each containing about 200 mL of culture soil. Pot seedlings were placed in an open rack installed outdoors to avoid rain. A sufficient amount of water was applied to the culture soil of all pot seedlings, and left in an open rack overnight under an outdoor environment. Then, 100 mL of water was applied to the culture of all the pot seedlings, and left for 1 hour until no excess water flowed out from the bottom of the pot. Six potted seedlings having uniform growth were selected, and two strains each were used in a control section, a 0.1 volume% acetic acid treated section and a 0.2 volume% acetic acid treated section. 30 mL of the test solution was applied to the culture of potted seedlings. The test solution is water (control), 0.1% by volume aqueous acetic acid (0.1% by volume acetic acid-treated, acetic acid: water = 1: 1000, pH not adjusted) or 0.2% by volume aqueous acetic acid (0.2% by volume acetic acid-treated) , Acetic acid: water = 1: 500, pH not adjusted). The control and acetic acid-treated pot seedlings were grown in an open rack for 4 weeks while placed in an open rack. During the growing period, 30 mL of the test solution was applied every week.

The appearance of potted seedlings in the control, 0.1% by volume acetic acid-treated and 0.2% by volume acetic acid-treated groups after growth for 4 weeks is shown in FIGS. 4 and 5. In FIG. 5, (a) is a photograph showing the overall appearance of potted seedlings in the control, 0.1 volume% acetic acid treated group and 0.2 volume% acetic acid treated group, and (b) is a 0.2 volume% acetic acid treated group It is a photograph which shows the fruit (mini-tomato) formed in the pot seedling. As shown in FIG. 4, in the control area, 0.1 volume% acetic acid-treated group and 0.2 volume% acetic acid-treated group, all plants grew well, and almost no lodging or discoloration of the main stem or side branch was observed The Particularly, in the case of the 0.1% by volume acetic acid-treated group and the 0.2% by volume acetic acid-treated group, the main stem part was elongated and the whole seedling grew large compared to the control group. Furthermore, fruiting was observed only in the case of the 0.2 volume% acetic acid-treated area (FIG. 5 (b)). Although the result is not shown, in the case of the potted seedlings which were continuously grown with irrigation under normal conditions immediately after transplanting, the main stem part was more extended compared to the potted seedlings of 0.2% by volume acetic acid treatment, Flowering or fruiting was not observed, although it grew larger.

From the results of this test, it was shown that the application of acetic acid can reduce the amount of irrigation of the plant while promoting the growth of the plant without substantially causing adverse effects on the growth of the plant.

<V: Reduction test of irrigation volume in tomato field cultivation>
A commercially available tomato seedling (variety: Home Momotaro), which had been sown and shipped, was purchased. The seedlings were transplanted into plastic pots containing about 200 mL of culture soil one by one to obtain potted seedlings.

A wooden frame was installed in the vinyl house field. In order to prevent water from penetrating from the ground surface into the interior of the crate, a vinyl film was attached to the bottom and side of the crate. Commercially available black soil (basic soil containing no fertilizer and the like) which had been sufficiently dried was placed in the inside of this wooden frame so as to be 30 cm deep. The black soil inside the crate was used as a test cropland.

Four potted seedlings per test area were allowed to stand overnight in a bat containing 1 L of water (seedling pretreatment). By pretreatment of the seedlings, a sufficient amount of water was absorbed from the bottom of the pots into the culture soil to make the water content of the culture soil of each pot seedlings equal. The pre-treated pot seedlings were directly transplanted to the test field.

On the 7th, 14th and 21st days after transplantation, 100 mL of water per non-treated group and 100 mL of 10 mM (0.057% by volume, unadjusted pH) aqueous acetic acid per control The district applied 400 mL of water per individual. Acetic acid used glacial acetic acid for commercial food addition (Koshiba Pharmaceutical Co., Ltd., Tokyo), and water used tap water, respectively. The application rates from the transplanting to the 21st day were 300 mL per individual in the non-treated group and the acetic acid applied group, and 1200 mL per individual in the control group. That is, tomato plants of the non-treated area, the acetic acid applied area and the control area were all cultivated under non-drying stress conditions which are continuously watered.

On the 22nd day after transplantation, the growth state of each tomato plant was visually confirmed. Testing of the above procedure was performed in triplicate. The percentage of the number of surviving individuals with respect to the total number of individuals in the non-treated group, the control group and the acetic acid applied group was calculated as the survival rate (%). The survival rates of the tomato plants in the untreated area, control area and acetic acid application area are shown in FIG. In the figure, the value of survival rate is the average value of three replicates. Moreover, the appearance of the tomato plant of a non-treatment area, a control area, and an acetic acid application area in a test period is shown in FIG. In the figure, (a) is a photograph of tomato plants in each section at the time of transplantation, (b) is a photograph of tomato plants in each section on the 15th day after transplantation, and (c) is a section from 22 It is a photograph of the tomato plant of each ward of a day.

As shown in FIG. 6, on the 22nd day after transplantation, the average survival rate of the non-treated group was about 5%. In contrast, the average survival rates of the control and acetic acid application groups were about 85% and 90%, respectively. In addition, it was observed that the tomato plants in the untreated area partially died at the 15th day after transplantation, and completely died at the 22nd day after the transplantation (FIG. 7 (b)). And (c)). On the other hand, the tomato plants in the acetic acid application zone are substantially the same as the tomato plants in the control zone without dying, even with the same amount of irrigation if the tomato plants in the untreated zone die. It showed the same growth. From the comparison of the irrigation volume in the acetic acid application area (300 mL per animal) and the irrigation volume in the control area (1200 mL per individual), the acetic acid application area can reduce the irrigation volume to 25% as compared to the control area. Was confirmed.

From the results of this test, it was shown that by applying acetic acid, it is possible to reduce the amount of water absorption of the plant while promoting the growth of the plant without substantially causing undesirable effects on the growth of the plant such as withering. .

All publications, patents and patent applications cited herein are incorporated herein by reference in their entirety.

Claims

An agent for reducing the amount of irrigation of plants comprising acetic acid or a salt thereof, or a solvate thereof as an active ingredient.
The plant water reduction agent according to claim 1, further comprising one or more solvents containing at least water, and having a pH in the range of 4-8.
The method according to claim 1 or 2, further comprising at least one solvent containing at least water, and acetic acid or a salt thereof in the range of 0.01 to 0.5% by volume relative to the total volume, or a solvate thereof. Reducing agent for irrigation water of plants.
An agrochemical composition for reducing irrigation of a plant comprising acetic acid or a salt thereof, or a solvate thereof and one or more agriculturally acceptable components.
The agrochemical composition according to claim 4, further comprising one or more solvents comprising at least water, and having a pH in the range of 4-8.
The method according to claim 4 or 5, further comprising at least one solvent containing at least water, and containing acetic acid or a salt thereof in the range of 0.01 to 0.5% by volume relative to the total volume, or a solvate thereof. Agricultural chemical composition.
Applying an agriculturally effective amount of acetic acid or a salt thereof, or a solvate thereof to a plant, a material for applying to the plant, or the soil, medium or culture solution from which the plant grows , A method of reducing the amount of irrigation of the plant.
Obtaining one or more pieces of information on plant growth,
The agent for reducing the amount of irrigation of plants according to any one of claims 1 to 3 or the agricultural chemical composition according to any one of claims 4 to 6 based on the acquired one or more pieces of information. Determining the plant, a material for applying to the plant, or conditions for applying to the soil, medium or culture solution on which the plant is grown therefrom,
A method of managing the growth of said plant, comprising
A preservative for cut flowers comprising acetic acid or a salt thereof, or a solvate thereof as an active ingredient.
10. The cut flower preservative according to claim 9, further containing one or more solvents containing at least water, and having a pH in the range of 4-8.
11. The method according to claim 9, further comprising at least one solvent containing at least water, and acetic acid or a salt thereof in the range of 0.01 to 0.5% by volume relative to the total volume, or a solvate thereof. Cut flower preservatives.