JP2003146806A - Flower bud promoter for broccoli and cauliflower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe and sure flower bud promoter for broccolis and caulifliowers having promoting effects on flower buds and further insect pest repellent effects and antimicrobial effects in combination. SOLUTION: This flower bud promoter for the broccolis and cauliflowers comprises at least one kind selected from cinnamic acid, p-coumaric acid and caffeic acid.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a flower bud promoting agent for flower vegetables such as broccoli and cauliflower. More specifically, it promotes the growth of flower buds for flower vegetables such as broccoli and cauliflower, accelerates the shipping period, and additionally aphids. The present invention relates to a highly safe flower bud facilitating agent which is effective in repelling the harmful insects of Escherichia coli, and also effective in preventing root rot and leaf death by pathogenic fungi.

[0002]

2. Description of the Related Art Conventionally, cultivation of broccoli and cauliflower has been carried out through the steps of sowing, raising seedlings, planting, growing and harvesting, but it requires a relatively long cultivation period. That is, cultivation of broccoli and cauliflower takes at least about 100 days from sowing to harvest. Therefore, if the cultivation period can be shortened, it is possible to expect industrially beneficial effects such as improvement in productivity, saving of required costs, and reduction of selling price. Also, broccoli and cauliflower are delayed in small seedlings if aphids sucking juice from the leaves occur frequently. Furthermore, since the flower buds tend to soften and rot, it is necessary to sufficiently spray the drug for soft rot and black rot. Therefore, there has been a demand for a means capable of shortening the cultivation period of broccoli and cauliflower, repelling aphids, and effectively controlling the decay of flower buds.

[0003]

[Problems to be Solved by the Invention] Cauliflower and broccoli are flower vegetables that make flower buds edible. As a means of shortening the cultivation period of these flower vegetables, the use of a flower bud promoting agent is considered. However, even its implementation has not been clarified yet, and the fact is that even if a substance is given, the flower buds cannot be reproducibly grown. Therefore, in order to use a flower bud promoting agent, it is first necessary to identify a substance that grows flower buds with good reproducibility. On the other hand, it is important to suppress the generation of pathogenic bacteria during the cultivation period in order to quickly and surely obtain a harvestable strain, and use of an antibacterial agent is considered for efficient production of cauliflower and broccoli. However, excessive use of toxic pesticides is not preferable because it causes various problems such as environmental destruction, and antibacterial agents that are environmentally friendly and highly safe are expected to be used.

Therefore, an object of the present invention is to provide a safe and reliable flower bud promoting agent for broccoli and cauliflower, which has a flower bud promoting effect as well as a pest repellent effect and an antibacterial effect. The present inventors, as a result of thorough research and various studies to achieve the above objects, broccoli,
The present inventors have found that the flowering of cauliflower is related to the lignin biosynthetic pathway, which led to the present invention.

[0005]

The above object can be achieved by the present invention described below. That is, the present invention is a flower bud promoting composition for broccoli and cauliflower, which comprises at least one selected from cinnamic acid, p-coumaric acid and caffeic acid.

<Action> (Action of flower bud facilitation) The flowering of broccoli and cauliflower is related to the metabolism of substances in the lignin biosynthetic pathway, and when the metabolism is not successful, flower bud formation occurs to promote flower bud growth. To do. The inability of substance metabolism to occur suggests that the transition of substance is blocked somewhere in the biosynthetic pathway. As a result, in the blocked path,
It seems that intermediate substances are abnormally accumulated, because the metabolism of the substance proceeds to that place and stops there. As a result, it is considered that the abnormal accumulation of this intermediate substance, that is, the abnormal increase in the concentration thereof, plays a role of switching on the formation of flower buds. Therefore, by adding an appropriate amount of this metabolic intermediate in the lignin biosynthetic pathway to the medium or soil, the formation of flower buds in broccoli and cauliflower can be induced, and the growth of flower buds can be accelerated.

(Antibacterial and pest repellent action) Metabolic intermediates of the lignin biosynthetic pathway are the above-mentioned flower bud formation, flower bud growth promoting action, inhibitory effect on broccoli and cauliflower pathogen development, and repellent against aphids and other harmful insects. It also has an effect. Therefore, by using this substance as a flower bud promoting agent for broccoli and cauliflower, it is possible to suppress the occurrence of diseases and feeding damage caused by pests, and to further ensure the flower bud promoting effect.

[0008]

The present invention will be described in more detail below. The flower bud promoting agent for broccoli and cauliflower of the present invention comprises cinnamic acid, p-, which is an intermediate in the lignin biosynthetic pathway.
It comprises at least one selected from coumaric acid and caffeic acid. All of these substances themselves are known compounds. Particularly preferred are cinnamic acid and caffeic acid. Although some of these substances may inhibit root growth, it is preferable to use such substances after the root has sufficiently developed.

The use form of the flower bud promoting agent for broccoli and cauliflower of the present invention is not particularly limited, but the liquid type is overwhelmingly advantageous in view of work efficiency.
The liquid type that has been often used in the past is to dilute the concentrated undiluted solution and spray it on the plants. Therefore, it is considered that the use of the concentrated solution having the highest degree of concentration enhances the transportation efficiency and the usability of the user, and brings many advantages.

However, the water solubility of the above-mentioned cinnamic acid and the like is extremely low, and when producing an aqueous solution type flower bud promoting agent using these substances, a dilute solution must be prepared in a large amount. This creates the problem of requiring a large amount of space to store these products. In addition, it may be considered that a sufficient pest repellent effect cannot be obtained even with a saturated aqueous solution of cinnamic acid or the like, and in such a case, it becomes necessary to maintain cinnamic acid or the like at a higher concentration. In order to solve these problems, it is necessary to devise means capable of stably supporting cinnamic acid and the like in a high-concentration liquid state. Therefore, these problems have been solved by forming a high concentration dispersion (liquid) of cinnamic acid or the like by a dispersing means using a dispersant or the like.

The bud promoting composition for broccoli and cauliflower of the dispersion (liquid) using the dispersant of the present invention can be produced by a generally known dispersion method.
For example, a dispersion can be prepared by mixing cinnamic acid, a dispersant, and water, putting this in a vessel of a disperser such as a sand mill, and performing a dispersion treatment at a rotation speed of 120 rpm for about 3 hours. The sand mill used in the present invention has a small diameter (0.2 to 5.0 mm) as a media in a cylindrical container.
30 to 95% of the inner volume is filled with the spherical material and the rotating mechanism for stirring the media is further provided inside the container. The volume of the cylindrical container is 0.3 to 250 liters, and the material is preferably stabilized zirconia, alumina, or rubber, and the material of the media is stabilized zirconium, alumina, or glass beads. The conditions of use are a rotation speed of 300 to 3000 rpm, a cinnamic acid slurry supply amount of 0.2 to 2000 ml / min. Therefore, it is desirable to pass the disperser a plurality of times as necessary.

As the dispersant used in the present invention, any dispersant used in an aqueous medium can be used. For example, an inorganic compound system, a natural product system, a formalin condensate system, a polymer system, or a special activator system is used. Condensed phosphates such as hexametaphosphate as an inorganic compound system, lignin sulfonate or carboxymethyl cellulose (CMC) as a natural product system, naphthalene sulfonic acid formalin condensate, alkylnaphthalene sulfonate formalin as a formalin condensate system Condensates, creosote oil sulfonic acid formalin condensates, cresol sulfonic acid formalin condensates and the like are used. As the polymer system, polyacrylic acid salts, salts of acrylic acid-maleic acid copolymers, salts of olefin-maleic acid copolymers are used. As the special activator, an alkyl diphenyl ether disulfonate or a polycyclic special nonionic activator is used. Particularly preferred are natural product-based dispersants such as lignin sulfonate and CMC, which are less likely to cause environmental pollution.

The flower bud promoting agent for broccoli and cauliflower of the present invention is not limited to the above-mentioned dispersion, and other usage forms can be appropriately selected according to the usage conditions. For example, at least one of the above-mentioned cinnamic acids can be used as a liquid or the like dissolved or emulsified in water or another solvent. When used as a liquid, it may be diluted in advance to a predetermined concentration or may be diluted as a concentrated liquid before use. Furthermore, if necessary, they can be used by mixing with fertilizers, other plant activators, other additives and the like. The amount of the broccoli and the flower bud promoting agent for cauliflower of the present invention is not particularly limited, but a particularly effective amount is 0.00001 to 0.02 part by weight per 100 parts by weight of the total amount of the medium (including soil). Is. If the amount used is above this range, it may adversely affect the growth of broccoli and cauliflower, and if it is below this range, sufficient effects may not be obtained.

[0014]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. The parts or% in the text are based on weight, and the amount of the flower bud promoting agent used is a solution or dispersion (including dispersion diluent).
Is an amount based on 100 parts by weight of the total amount.

Example 1 A large pot (diameter: 30 cm, height: 25 c) in which a broccoli seedling was planted in a pipe house (vinyl house).
m) was placed and the cultivation of broccoli was started. afterwards,
100 ml per pot on 70th and 84th days of cultivation
The 0.001% cinnamic acid aqueous solution was sprayed on the plants with a watering can (such as dew). On the 100th day from the start of cultivation, the size of broccoli flower buds (one grown in one pot) grown around eating was measured and compared with the size of control buds not sprayed with the cinnamic acid solution. The results are shown in Table 1.

[0016]

As shown in Table 1, the florets of broccoli sprayed with the 0.001% cinnamic acid aqueous solution were compared with the florets of the control.
It was found that a 0.001% cinnamic acid aqueous solution having a diameter of 27% had a flower bud promoting effect on broccoli.

Example 2 A large pot (diameter: 30 cm, height: 25 c) in which cauliflower seedlings were planted in a pipe house (vinyl house).
m) was placed and the cultivation of cauliflower was started. afterwards,
On 70th, 84th and 100th days of cultivation, 100 ml of a 0.001% cinnamic acid aqueous solution per pot was sprayed on the plants with a watering can. On the 114th day from the start of cultivation, the size of cauliflower buds (one grown in one pot) that grew around the time of eating was measured and compared with the size of a control bud that was not sprayed with a cinnamic acid solution. The results are shown in Table 2.

[0019]

The results shown in Table 2 show that the cauliflower buds sprayed with the 0.001% cinnamic acid aqueous solution are
It was found that a 0.001% cinnamic acid aqueous solution having a diameter of 21.2% had a cauliflower bud promoting effect.

Example 3 How to make an aqueous dispersion of cinnamic acid (liquid): 160 g of cinnamic acid, a dispersant (4 of sodium lignin sulfonate manufactured by Tokyo Kasei Co., Ltd.)
200 g of 0% aqueous solution) and 173.3 g of water are mixed, and 1800 g of glass beads (diameter 1 to 1.25 mm) is further added to this, and this is added to a disperser (manufactured by RM Co., Ltd. parallel 6-cylinder test sand mill). Put it in the vessel of and rotate at 12
Dispersion treatment was performed at 0 rpm for 3 hours to obtain a cinnamic acid aqueous dispersion having a pure content of 30%. Next, this dispersion is diluted with distilled water to 3 times.
It was diluted 10,000 times to obtain a 0.001% cinnamic acid aqueous dispersion diluted solution.

A large pot (diameter: 30 cm, height: 25 cm) in which broccoli seedlings were planted was placed in a pipe house (vinyl house) to start cultivation of broccoli. Then, on the 70th and 84th days of cultivation, 100 ml of the above-mentioned 0.001% cinnamic acid aqueous dispersion diluted solution was sprayed on the plants with a watering can. 100 from the start of cultivation
On the day, the size of broccoli flower buds (one grown in one pot) that grew around the time of eating was measured and compared with the size of control florets that were not sprayed with the cinnamic acid aqueous dispersion dilution. The results are shown in Table 3.

[0023]

The results shown in Table 3 show that the broccoli flower buds sprayed with the 0.001% cinnamic acid aqueous dispersion diluted solution are 26% larger in diameter than the control florets and are diluted with 0.001% cinnamic acid aqueous dispersion. The liquid was found to have a flower bud forcing effect on broccoli.

Example 4 A large pot (diameter: 30 cm, height: 25 c) in which cauliflower seedlings were planted in a pipe house (vinyl house).
m) was placed and the cultivation of cauliflower was started. afterwards,
On 70th day, 84th day and 100th day of cultivation, 100 ml per pot of 0.001% cinnamic acid aqueous dispersion diluted solution of Example 3 was sprayed on the plants with a watering can. 1 from the start of cultivation
On the 14th day, the size of cauliflower buds (one grown in one pot) that had grown around the time of eating was measured and compared with the size of control buds that were not sprayed with the diluted cinnamic acid dispersion. The results are shown in Table 4.

[0026]

As shown in Table 4, the cauliflower buds sprayed with the 0.001% cinnamic acid aqueous dispersion diluted solution were 20.7% larger in diameter than the control florets, and the 0.001% cinnamic acid aqueous dispersion was dispersed. It was found that the body diluted solution had a flower bud forcing effect on cauliflower.

[0028]

As described above, according to the present invention,
Provided is a safe and reliable flower bud promoting agent for broccoli and cauliflower, which has a flower bud promoting effect and also has a pest repellent effect and an antibacterial effect.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuo Yamazaki             1-7-6 Nihonbashi Bakurocho, Chuo-ku, Tokyo Large             Within Nissei Chemical Co., Ltd. (72) Inventor Yoichi Watanabe             2133-5 Kanaya, Futtsu City, Chiba Prefecture F-term (reference) 2B022 EA01                 4H011 AB03 BA01 BB06 BC07 BC18                       DA13 DA14 DD03

Claims (4)

[Claims] 1. A flower bud promoting agent for broccoli and cauliflower, which comprises at least one selected from cinnamic acid, p-coumaric acid and caffeic acid. 2. A flower bud promoting composition for broccoli and cauliflower, which is prepared by dispersing at least one selected from cinnamic acid, p-coumaric acid and caffeic acid in an aqueous dispersion medium at a high concentration. 3. The flower bud promoting composition for broccoli and cauliflower according to claim 2, wherein a dispersant is used as a dispersing means. 4. A method for producing a floret bud promoting composition dispersion for broccoli and cauliflower, which comprises subjecting at least one selected from cinnamic acid, p-coumaric acid and caffeic acid to a dispersion treatment in an aqueous medium together with a dispersant.