JPH083003A - Plant growth regulator composition and plant growth regulator method - Google Patents

Abstract

(57) [Summary] [Structure] A plant growth regulator composition containing choline and 2-methyl-4-chlorophenoxybutyric acid as active ingredients, and choline and 2-methyl-4-chlorophenoxybutyric acid A method for controlling plant growth which is also used as an active ingredient. [Effect] Increases plant growth, especially growth promotion,
It is possible to improve markedly coloring and promotion of ripening period without deteriorating the fruit quality of apples, and to enhance the effect of preventing fruits from falling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant growth regulator composition and a plant growth regulator method, and more particularly to a plant growth regulator composition and a plant growth promoter method for promoting coloring of apples.

[0002]

BACKGROUND OF THE INVENTION As plant growth regulators, auxins, gibberellins, cytokinins, ethylenes and the like have hitherto been known. There is gibberellin as a plant growth promoter that actually has a practical effect, and as rooting promoters, there are auxins such as IAA (indole acetic acid) and NAA (α-naphthalene acetic acid), and as an antiaging agent, kinetin. There are cytokinins such as (6-furfurylaminopurine) and benzyladenine.

[0003] As a technique for increasing the coloration of apples and promoting maturation for about 1 to 2 weeks, MCPB (2-methyl-4-
30 to 5,000 times of the Madec emulsion containing 20% of ethyl chlorophenoxybutyrate)
The method of spraying 20 days ago has been put into practical use, but this method has not always achieved sufficient results.

On the other hand, the inventors of the present invention have previously described the above-mentioned JP-A-61-11550.
As described in Japanese Patent Publication No. 1, the inventors have found that choline salts are effective in increasing the yield of various crops. That is, the choline salt has, for example, a root-promoting action of rice, a photosynthesis-promoting action of wheat, and an increase in yield of onions, sweet potatoes and onions. However, the plant growth regulating action of choline salt is not always sufficient in practical use, and further improvement is desired.

[0005]

An object of the present invention is to provide a plant growth regulator composition which utilizes the action of choline and has a sufficient plant growth regulator effect that is practically satisfactory. , A useful plant growth regulation method.

[0006]

Means for Solving the Problems The present inventors have added various compounds to choline in order to improve plant growth regulating action of choline (choline and / or choline salt). I went. As a result, 2-methyl-4-chlorophenoxybutyric acids (2
-Methyl-4-chlorophenoxybutyric acid, 2-methyl-4
-Chlorophenoxybutyric acid salt and / or 2-methyl-4-chlorophenoxybutyric acid ester), when choline and 2-methyl-4-chlorophenoxybutyric acid are applied alone. The present invention has been found to exhibit a specific high plant growth regulating action which has not been found in the above, and in particular, to exhibit an excellent effect in promoting the coloring of apples.

That is, the present invention is a plant growth regulator composition characterized by containing choline and 2-methyl-4-chlorophenoxybutyric acid as active ingredients, and choline and 2-methyl-4. -A method for regulating plant growth, which comprises using chlorophenoxybutyric acid as an active ingredient in combination.

The choline salt used as one of the active ingredients in the present invention is, for example, an inorganic salt such as a hydrochloride, a phosphate, a polyphosphate, a sulfate, a nitrate, a silicate and a carbonate, and an acetate and a citrate. Organic acid salts such as acid salts, lactates and L-(+)-tartrate salts. Of these, hydrochloride (choline chloride) and phosphate (choline phosphate) are most preferred. Also, two or more kinds of these salts may be used in combination. Table 1 shows the physical properties of typical choline salts.

[0009]

[Table 1]

The salt of 2-methyl-4-chlorophenoxybutyric acid used as the other active ingredient in the present invention includes, for example, inorganic salts such as sodium salt, potassium salt and calcium salt, ethylamine salt and triethylamine. Salts, isopropylamine salts, triethanolamine salts, pyridinium salts and salts with organic bases such as 1,8-diazabicyclo [5,4,0] -7-undecene (DBU) salts. The ester of 2-methyl-4-chlorophenoxybutyric acid used in the present invention includes
For example, there are lower alkyl esters, and among them, ethyl ester is preferable. Ethyl 2-methyl-4-chlorophenoxybutyrate is commercially available, widely used as a herbicide, and easily produced. In addition,
Among the combinations of both active ingredients, the combination of choline phosphate (choline phosphate) or choline hydrochloride (choline chloride) and ethyl 2-methyl-4-chlorophenoxybutyrate is most preferable.

The plant growth regulator composition of the present invention can be made into various desired dosage forms by a conventional method. For example, these active ingredients can be mixed with carriers such as talc, bentonite and clay and formulated as a wettable powder. In addition, the plant growth regulator composition of the present invention preferably contains a spreading agent so that the active ingredient can easily adhere to and penetrate the plant. As the spreading agent, for example, a nonionic spreading agent such as alkylphenol polyethylene glycol ether and polyoxyethylene alkyl allyl ether and a cationic spreading agent such as ligninsulfonic acid are suitably used. These spreading agents may be used either individually or in combination of two or more. Furthermore, the plant growth regulator composition of the present invention can be used together with liquid fertilizers, fungicides, insecticides and the like.

In the plant growth regulating method of the present invention, choline and 2-methyl-4-chlorophenoxybutyric acid are usually dissolved in, for example, water or oil to prepare a solution, or water or oil. It is used as a suspension or an emulsified liquid by being dispersed in In addition, when applied, it can be used in a mixture with a spreading agent, liquid fertilizer, bactericide, insecticide and the like.

The timing of application of the plant growth regulator composition of the present invention and the timing of application of the plant growth regulator of the present invention are as follows: type of plant to be treated-for example, apple variety-, cultivation area, type of active ingredient and Although it cannot be generally specified because it depends on the application rate, the combination of both components, and the weather, it cannot be specified in general.
For about a day, or about 70 to 20 days after the flowers are in full bloom
A period of about 0 days is preferable. In particular, it is preferable to increase the coloring of apples by about 60 to 10 days before the scheduled harvest start date. For typical apple varieties, standard application times in normal weather are shown in Table 2.

[0014]

[Table 2]

The number of times of application is usually one, but it can be applied plural times. When applying a plurality of times, usually, it is sufficient to apply 2 to 3 times, and the interval is
Usually, it is about 5 to 20 days.

In the plant growth regulator composition of the present invention,
The mixing ratios of choline and 2-methyl-4-chlorophenoxybutyric acid were choline and 2-methyl-4-, respectively.
When converted to chlorophenoxybutyric acid, the weight ratio of 2-methyl-4-chlorophenoxybutyric acid to 1 choline is set to 0.01 to 1, and preferably to 0.3 to 0.5.

When the plant growth regulator composition of the present invention is used after diluting it with water, or when the plant growth regulator method of the present invention is applied, the concentration of the active ingredient in the liquid is choline,
Converted to choline, 150 to 1,500 ppm, preferably 2
The amount of 2-methyl-4-chlorophenoxybutyric acid is 10 to 500 ppm, preferably 20 to 1 ppm in terms of 2-methyl-4-chlorophenoxybutyric acid.
It is set to 00 ppm.

In the plant growth regulating method of the present invention, the active ingredients choline and 2-methyl-4-chlorophenoxybutyric acid are prepared in advance as the plant growth regulator composition of the present invention. Alternatively, they can be applied immediately before application, or each can be applied individually at substantially the same time. Alternatively, both components can be applied alone with a time interval. In this case, one of the previously applied active ingredients must be applied while the other is active. The length of this time interval is
It cannot be unequivocally specified because it varies depending on the type of plant to be treated, the application amount of the active ingredient, the combination of both active ingredients, the type and amount of the spreader, and the weather, but practically, it is about 24 hours or less in practice. Preferably.

[0019]

EXAMPLES Next, the contents of the present invention will be described in more detail with reference to formulation examples and test examples of the plant growth regulator composition of the present invention. The present invention is not limited to these examples. In the test examples, the concentration of each active ingredient is shown as a value converted into choline and 2-methyl-4-chlorophenoxybutyric acid. Formulation Example 1 (Wettable powder) 17 parts by weight of choline phosphate in terms of choline, 2-methyl-4
-Ethyl chlorophenoxybutyrate was uniformly mixed and pulverized with 5 parts by weight of 2-methyl-4-chlorophenoxybutyric acid, 5 parts by weight of sodium dodecylbenzenesulfonate, 2 parts by weight of polyoxyethylene alkyl allyl ether and 58 parts by weight of talc. To obtain a wettable powder. This wettable powder is usually
It is diluted 100 to 600 times with water and applied.

Test Example 1 On September 19 (corresponding to 34 days before the harvest start date), an apple (variety Jonagold) tree was sprayed with a chemical using a backpack type semi-automatic sprayer so that the fruits and leaves were sufficiently wetted (tree). About 4L per one). In addition, one tree per section was repeated three times. On October 23, the characteristics of 30 randomly selected fruits from each test tree were investigated, and the average value was shown. In the evaluation of coloring, 1 was assigned to defective coloring and 5 was assigned to the color considered to be ideal.
The results are shown in Table 3.

[0021]

[Table 3]

1) Choline phosphate (concentration in spray solution: 1.0
00ppm) and ethyl 2-methyl-4-chlorophenoxybutyrate (concentration in spray solution 50ppm) 2) Choline phosphate (concentration in spray solution 1,000ppm) 3) Ethyl 2-methyl-4-chlorophenoxybutyrate (in spray solution) Concentration 50ppm) 4) No treatment Outline of effect: A remarkable coloring promotion effect was observed in No. 1 ward. In particular, the improvement in coloring of fruits in the lower branches and shaded areas could be clearly identified.

Test Example 2 On August 16th, apples (variety Tsugaru, rootstock M.26) tree (14th grader) were sprayed with each chemical so that the fruits and leaves were sufficiently wet with a backpack-type automatic sprayer (tree About 8 per
L). In addition, in each section, one tree per section was used three times. On August 26th, August 31st, September 5th, and September 10th, the fruits that had reached the proper harvest time were harvested, and the number of harvested fruits was counted. In addition, a quality survey was conducted on all fruits harvested on August 31. Evaluation of coloring was performed in the same manner as in Example 1. The results are shown in Tables 4 and 5.

[0024]

[Table 4]

1) Choline chloride (1,000 ppm) and 2
Ethyl methyl-4-chlorophenoxybutyrate (40 pp
m) 2) Choline chloride (1,000 ppm) 3) Ethyl 2-methyl-4-chlorophenoxybutyrate (4
0 ppm) 4) 2- (2,4-dichlorophenoxy) propionic acid triethanolamine salt (= dichloroprop) (45
ppm) (control drug)

[0026]

[Table 5]

* 1: Choline chloride (1,000 ppm) and ethyl 2-methyl-4-chlorophenoxybutyrate (40
ppm) 2: Choline chloride (1,000 ppm) 3: 2-Methyl-4-chlorophenoxybutyrate ethyl (4
0 ppm) 4: 2- (2,4-dichlorophenoxy) propionic acid triethanolamine salt (= dichloroprop) (45
ppm) (control drug)

[0028]

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to control the growth of plants, particularly to enhance the growth promotion, and especially to enhance the coloring promotion and the ripening promotion without deteriorating the fruit quality of apples, and preventing the fall of fruits. The effect can be increased.

[Procedure amendment]

[Submission date] August 3, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

In the plant growth regulator composition of the present invention, the mixing ratios of choline and 2-methyl-4-chlorophenoxybutyric acid are choline and 2-methyl-, respectively.
And a 4-chlorophenoxy butyric acid, in a weight ratio of 2-methyl-4-chlorophenoxy butyric acids against choline compound 1, 0.01, is preferably 0.0 3 to 0.5 It

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

When the plant growth regulator composition of the present invention is used after being diluted with water, or when the plant growth regulator method of the present invention is applied, the concentration of the active ingredient in the liquid is such that choline is choline and choline is choline. 150 to 1,500 ppm, preferably 2
Is a 00～1,000Ppm, 2-methyl-4-chlorophenoxy butyric acids are, 10 to 500 ppm as a 2-methyl-4-chlorophenoxy butyric acid, preferably 20 to
It is set to 100 ppm.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiromichi Kuriyama 2-3-5 Kanda, Hirosaki City, Aomori Prefecture Agroca NESHO CORPORATION Tohoku North Branch (72) Inventor Hiroki Sasaki 2-5-5 Kanda, Hirosaki City, Aomori Prefecture Nesho Corporation Tohoku North Branch

Claims (2)

[Claims] 1. Choline and / or a choline salt, 2-
Methyl-4-chlorophenoxybutyric acid, 2-methyl-4-
Chlorophenoxybutyric acid salt and / or 2-methyl-
A plant growth regulator composition comprising an ester of 4-chlorophenoxybutyric acid as an active ingredient. 2. Choline and / or choline salt, 2-
Methyl-4-chlorophenoxybutyric acid, 2-methyl-4-
Chlorophenoxybutyric acid salt and / or 2-methyl-
A method for controlling plant growth, which comprises using an ester of 4-chlorophenoxybutyric acid as an active ingredient.