JPH02231402A - Plant growth regulating agent - Google Patents

Abstract

PURPOSE:To provide the subject regulating agent exhibiting excellent growth regulating activities such as growth accelerating activity and growth inhibiting activity to various plants, economically inexpensively available, soluble in water and readily handled by containing a specific ammonium compound as an active ingredient. CONSTITUTION:A plant growth regulating agent contains as an active ingredient at least one kind of ammonium compound salts of the formula (R<1>-R<3> are alkyl; X is halogen) such as 3-chloro-2oxypropyltrimethylammonium hydroxide hydrochloride. The agent is used in a form such as a powder, solution, emulsion, etc. The agent is used for the leaves, stems, roots, seeds, etc., of plants by the spraying, coating, soaking or immersion of the agent in a concentration of 0.1-10000ppm. The agent exhibits a growth acceleration activity in a low concentration and expresses a growth inhibiting activity with the increase of the concentration. The agent exhibits excellent activities to the growth acceleration, yield increase, quality improvement, etc., of grains, beans, vegetable, leaf vegetables, root vegetable, fruit trees, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a plant growth regulator. [Prior Art] Conventionally, indolebutyric acid has been used as a plant growth regulator. Known examples include indole acetic acid, indole probiacetic acid, naphthyl acetic acid, cytokinins such as pendylaminopurine and phenylaminopurine, gibberellin, triacontanol, and maleic hydrazide. However, these have drawbacks such as being usable only for special purposes or being too expensive to be used as regular plant growth regulators. [Problem to be solved by the invention] Farmers who produce agricultural products need a new growth regulator that exhibits excellent growth regulating effects on -M plants, is inexpensive, easy to procure, and is easy to handle. There is a strong desire for the development of [A Thousand Steps to Solving the Problem] In view of the drawbacks of the conventional technology mentioned above, the present inventors conducted intensive research to develop a new growth regulator, and as a result, the salts of specific ammonium compounds were found to be effective against various plants. The present inventors have completed the present invention by discovering that these compounds exhibit excellent growth-regulating effects on plants, and that these compounds can be procured economically at low cost and are easy to handle because they are soluble in water. That is, the present invention provides a salt of an ammonium compound represented by the general formula OH The present invention provides a plant growth regulator containing at least one selected from the group consisting of:

Salts of ammonium compounds having the above general formula have excellent regulating effects on plant growth, that is, growth promoting and/or growth inhibiting effects. The salt of the ammonium compound of the above general formula used in the present invention is a compound that is known or easily prepared by a known method. In the present invention, salts include, for example, inorganic salts such as hydrochloride, phosphorus salt, polyphosphate, sulfate, nitrate, silicate, carbonate, and acetate, citrate, lactate, tartrate, These include organic acid salts such as ascorbate and amino acid salts. Table 1 lists some of the salts of the above ammonium compounds used in the present invention. Among these, particularly preferred is No. 1, 3-chloro-21-year-old xybrovir trimethylammonium chloride. Table 1 The growth regulator of the present invention contains one or a mixture of two or more of the above salts, and can be in any commonly known form such as powder, aqueous solution, emulsion, aqueous or oily suspension. Although it can be used in the form of an aqueous solution, it is preferable to use it in the form of an aqueous solution. The concentration when using the growth regulator of the present invention varies depending on each compound, and the expression of its activity differs depending on the concentration, and the optimum concentration for use also differs depending on the type of target plant, but generally it is on the lower side. It exhibits a growth-promoting effect, and as the concentration increases, it exhibits a growth-inhibiting effect. As an aqueous solution, it is generally 0.1 to 10,000 ppm.
It is particularly used at a concentration of 0.5 to 3000 ppa+, and is applied by spraying, painting, irrigation, or dipping on the leaves, stems, roots, and seeds of plants. The timing of use of the growth regulator of the present invention is not particularly limited, and may be before or after germination, or between the reproductive growth period of the plant and the harvest period. The concentration and timing of use are selected depending on the type of plant and the desired effect.

The growth regulator of the present invention includes additives, fertilizers, fungicides, insecticides, spreading agents, etc. commonly used for plants, such as nitrogen,
It can be used in combination with phosphoric acid, potassium components, amino acids, sugars, vitamins, trace metal components, etc. [Production Example] Next, a production example of the compound used in the growth regulator of the present invention.
An example of the production of compound No. 1 in Table 1 above is shown below. Production Example 1 In a 101 reaction tank equipped with a cooling tube and a stirrer, 60% trimethylamine hydrochloride aqueous solution was mixed continuously at a flow rate of 98 g/min and shrimp chlorohydrin at a flow rate of 57 g/min (molar ratio of both 1.0). L was supplied.

The average residence time in the reaction tank was 60 minutes, the temperature in the reaction system was maintained at 30°C, and 8.5 kg of crude reaction liquid was obtained. As a result of analysis, the yield of the target compound was 97 mol% based on the raw shrimp chlorohydrin. 8 kg of the obtained crude reaction liquid was charged into a 105 distillation can, and the 70
Topping was performed while adding water under a reduced pressure of 1IlmHg to obtain the target compound as a product. The amount of water added was 0.8 times the amount of the reaction crude liquid.

The composition of the product obtained was: 3-chloro-2-chloride trimethylammonium hydroxide hydrochloride 65.
5% by weight, 32.8% by weight of water, and 1.7% by weight of others. [Example] Next, the present invention will be explained in more detail with reference to Examples. Example 1 (Implemented in June 1987) 125 culture test tubes with an inner diameter of 23 mm and a length of 150 mm were prepared, 1.5 g of cellulose powder was packed in the bottom of each tube, and 5 mj of each test solution was poured into the tubes ( A total of 120 plants were treated by adding 5 of the same type to the cellulose powder.As a control, 5 plants were prepared in which only 5 nij of water was added to the cellulose powder (no application). Table 2 Next, five seeds of paddy rice (variety: Koshihikari), which had been previously selected, sterilized, and germinated under the same conditions, were placed in these 125 culture test tubes, and then cultivated at 30° C. for 10 days. The average value of the measured values of 25 plants was determined for leaf length and root length, and the influence of each test solution on the growth of seedlings was investigated.

The results are shown in Table 2. As is clear from the results in Table 2, each compound exhibited a promoting effect on rooting and growth of rice at low concentrations, and a growth inhibiting effect at high concentrations. Example 2 (Implemented from June 1987 to October 1987) Soybean (Suzyuta Chikara) seeds were sown in a field on June 8th. On August 8th of the flowering period or on the 28th day of the δ month 20 days after the flowering period, the compound numbered 1 in Table 1 above was uniformly sprayed on the soybeans using an automatic sprayer at 100 g per 1Oa at each concentration shown in Table 3. did. In the untreated area, only water was sprayed (10
(ln" double system) The stem length was measured on August 8th during the flowering period, and the stem length and yield were measured on October 11th during the harvesting period, and the untreated plot was set as 100 and calculated as an index. Results are shown in Table 3. As is clear from Table 3, the treatment with Compound 1 suppressed the stem length of soybean, suppressed overgrowth of the stem and leaves, and also increased the yield.

Table 3 Example 3 (Implemented from October to November 1987) Seeds of tomato (Toyosho), cucumber (Seiriki Setsei No. 5), cabbage (Kinkei No. 201), and Chinese cabbage (disease resistance 60 days) were grown. The samples were immersed for 24 hours in solutions of Compound 1 in Table 1 and concentrations listed in Table 4 above. On the 5th of October, place 10 seeds in 1 section in a seedling pot (made of plastic, 100 cta) filled with soil.
As a bot, three seeds were sown in each pot. After germination, I thinned out and planted one tree. Cultivation at 20-25℃
It was held in the house of Fertilizer is N. P. K 2.5 each
Fertilizer was applied at a rate of kg/a. Plant height, number of leaves, and fresh weight were measured 30 days after sowing. As the results are shown in Table 4, the promoting effect on growth is clear. Table 4 Example 4 (Implemented from November 1987 to June 1988) Autumn sown wheat (
No. 61) f-juko was sown in the field on November 2nd. 20 days before flowering, a test solution of each concentration shown in Table 5 (spreading agent 2L Oppn+ added) was uniformly sprayed on the wheat on foliage using an automatic sprayer at 150L per 1L. Spreading agent 20 (
Only the ippm aqueous solution was sprayed. (3ro is double system). The wheat was harvested on June 5th of the following year, and the aboveground dry weight and wheat yield were measured. Table 5 shows a comparison with the untreated plot. Seeds of radish (commercial product from Mie Prefecture: Blue-necked radish) were immersed in test solutions of various concentrations shown in Table 6 for 24 hours, then washed with water and air-dried. For the untreated plot, the seeds were soaked in water for 24 hours, then washed and dried.
Seeds were sown in two rows in a field with a furrow width of 30 am, with 4 seeds per hole, and after emergence, they were thinned out to form single plants. Table 6 Example 5 + Conducted from September to November 1988) Harvested on November 15th, total weight and root weight were determined. The average measured values are shown in Table 6.

The daikon radish obtained in this experiment had no suction and had a firm texture.
It was straight. Example 6 (Implemented from October to II, 1988) Harvesting 1 persimmon tree (Fuyu 20 years old) grown in the field.
On the 15th day of the previous month, apply the test solution of each concentration shown in Table 7 (adding 100 ppm of polyoxyethylene nonylphenol ether as a spreading agent) to 3 trees in each district using an automatic N sprayer until the branches and leaves are sufficiently wet. Sprayed (sprayed amount 2001/l
Oa), harvested on November 15, fruit weight and sugar content (by refractometer) were measured. The results are shown in Table 7.

As is clear from the results, improvements in fruit weight and sugar content were observed. Table 7 Example 7 + Conducted from May to September 1988) On 5f418, corn (honey bantam) seeds were sown in a field in two rows of 2 m2 per section, with two seeds per hole.

After germination, thin out the plants and add basal fertilizer (N:P:K・1:
1:1) was applied at 10 kg per 1Oa.

At the 3rd to 4th leaf stage on June 1st, apply the test solution (
As a spreading agent, polyoxyethylene nonylphenol ether 200111)01 was added to I (100% per la).
1. Evenly sprayed on the foliage of corn using an automatic sprayer.
In the untreated area, only a 200 ppro aqueous solution of the spreading agent was sprayed.

The plant height was determined on June 21st, harvested on September 10th, and the yield was compared with the untreated plot.

The results are shown in Table 8. As is clear from Table 8, the effect of controlling plant height, suppressing overgrowth, and increasing yield was observed. When it becomes high, it exhibits a growth-suppressing effect. The growth H regulator of the present invention can be used in a wide range of fields, and the plants to which it can be applied are not particularly limited. Cabbage, Chinese cabbage. Promotes growth of vegetables such as salad greens, increases yield, promotes rooting/germination of seeds and seedlings,
Japanese white radish. It has excellent effects in promoting the growth and increasing yield of root vegetables such as carrots, and promoting the growth, increasing yield, and improving quality of fruit trees such as persimmons. Also, as a growth inhibitor, it is effective in inhibiting the length of the stalks of legumes such as soybeans and corn. [Effect of the invention〕

Claims (1)

[Claims] (1) General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, R^1, R^2 and R^3 are each independently an alkyl group having 1 to 18 carbon atoms, and X is a halogen atom. .) A plant growth regulator comprising at least one selected from the group consisting of salts of ammonium compounds represented by: