JP3515935B2 - Plant growth promoter - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a plant growth promoter, and in particular, as a physiologically active substance of plants, promotion of flower bud formation, flowering,
The present invention relates to a plant growth promoter for vegetables and fruits.

[0002]

2. Description of the Related Art A number of studies have been conducted and reported so far on physiologically active substances of plants. For example, indoleacetic acid, which is a representative of auxin, is considered to be an important plant hormone involved in plant growth. Gibberellin is well known as a hormone that promotes stem elongation. Cytokinin is known as a hormone that promotes cell division and prevents aging, and abscisic acid is known as a hormone that suppresses growth. However, with the exception of gibberellin, no other physiologically active substance is commercially available. Various studies have demonstrated that various amino acids are deeply involved in metabolism in plants, and that proline in particular promotes flower bud formation.

Uracil, a kind of nucleic acid base, is
It is also well known that, during the reproductive period of a plant, accumulation and disappearance in the plant are very fast and deeply involved in plant physiology as compared with other nucleic acid bases such as adenine and guanine. It was also reported that the number of grains increased when these two substances were used together in rice.

Further, it has been reported that the combined use of uracil and proline promoted flower bud formation and had a growth promoting effect, a fruit enlargement effect and a fruit number increasing effect also in flowers, vegetables, fruits and the like ( Japanese Patent Publication No. 46-42566).

[0005]

In the present invention, the plant growth promoting effect of the mixture of uracil which is one of the nucleic acid bases and proline which is one of the amino acids is utilized.
In order to enhance this effect, various additional components have been investigated, and especially amino acids and trace metal elements have been focused on. The purpose is to provide a useful plant growth promoter for flowers, vegetables, fruits, cereals, and mushrooms.

[0006]

The present invention developed as a means for achieving this object is a plant growth promoter containing uracil, proline and glutamic acid or salts thereof as essential components. Further, the content ratio (weight) of uracil, proline and glutamic acid or a salt thereof,
Plant growth promoters of 1: 0.3 to 6: 0.1 to 10 give good results.

Furthermore, when magnesium is contained in uracil, proline, glutamic acid or salts thereof, the growth of plants is further improved. The composition of these components is such that the content ratio (weight) of uracil, proline, glutamic acid or a salt thereof and magnesium is 1: 0.3-6: 0.1-1.
The range of 0: 0.05 to 30 is preferable.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The uracil used in the present invention may be a commercially available product or a product obtained by hydrolyzing a nucleic acid with an enzyme, an acid or an alkali. Alternatively, a method of condensing urea and formylacetic acid in the presence of sulfuric acid, a method of condensing urea and acrylic acid at high temperature to produce hydrouracil, and a method of producing uracil from this through a bromine substitution compound are known methods. It may be one.

Proline and glutamic acid, which are one of the amino acids, are commercially available, but gelatin, collagen,
It may be a protein such as keratin which has been subjected to alkaline decomposition and enzymatic decomposition, or may be a mixture of amino acids, or may be one synthesized by a known method. Even if glutamic acid is supplied as a salt such as sodium salt, the same effect as that of the acid can be obtained.

The plant growth promoter of the first invention contains these three substances, uracil, proline and glutamic acid or a salt thereof, as essential components. The second invention is the same as the first invention. A plant growth promoter which further contains magnesium as an essential component in the plant growth promoter,
By including magnesium, the promoting effect can be further enhanced. The magnesium used in the present invention is preferably a water-soluble magnesium salt such as magnesium chloride, magnesium sulfate or magnesium acetate, but magnesium oxide can also be used.

Next, regarding the content ratio of these essential components, the ratio (weight) of uracil to proline to glutamic acid or its salt is preferably in the range of 1: 0.3 to 6: 0.1 to 10: 0.05 to 30. Below the lower limit, the plant growth promoting effect is significantly reduced. However, although the upper limit is not as strict as the lower limit, even if uracil is contained more than this, a large growth promoting effect cannot be expected and it is not economical.

The plant growth promoting agent of the present invention may be used in the form of powder using these essential ingredient-containing materials as a carrier such as silica, diatomaceous earth, talc, calcium carbonate, zeolite and the like. The preferred form is liquid and recommended for direct foliar application to plants.

When sprayed as a liquid onto leaves, stems, roots, etc., the essential components of the present invention act most effectively on plants and exert their effects. When used as a liquid, the solution pH is 3.0 to 6.5, more preferably 4.0 to
It is 6.0. If it deviates from this range, the effect of promoting growth is reduced, which is not desirable. When adjusting the pH, hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, citric acid, acetic acid or the like is used, and sulfuric acid or acetic acid is particularly preferable. When used as a liquid,
Water-soluble fertilizer salts such as ammonium sulfate, ammonium chloride, phosphorus ammonium, salting, and sulfurizing,
It is further desirable to add a spreading agent. Furthermore, trace elements such as calcium, zinc, iron, boric acid and copper, or various nutritional supplements such as vitamin B, vitamin C and vitamin E can be contained. In addition, amino acids such as valine, lysine, alanine, cystine, glycine, isoleucine,
Nucleic acids such as cytosine, thymine and adenine may be contained, but the above three components are essential.

When used as a liquid, the concentration of the components can be arbitrarily adjusted, but as an example, uracil is about 1,000 to 2,500 ppm, and other components are adjusted accordingly and applied. 10 to 10,000 times, preferably 200 to 5,000, depending on the plant and growth stage
Dilute twice and sprinkle. Further, the number of times of application and application may be appropriately determined according to the applied plant species.

The plant growth promoter of the present invention is particularly effective for promoting flower bud formation as described above, and includes flowers, vegetables, fruit trees, specifically cyclamen, chrysanthemums, lilies, roses, carnations, strawberries, eggplants, tomatoes, watermelons. , But are not limited to mushrooms such as melon, pear, grape, mandarin orange, apple, shiitake mushroom, enoki mushroom, nameko mushroom, jellyfish, medaka mushroom and the like. It was also sprayed on broccoli, tomato, dianthus, sweet potato as well as cabbage, Chinese cabbage, etc. shown in these examples, but it was confirmed that it had an excellent pest control effect.

[0016]

EXAMPLES The present invention will be described in detail below with reference to detailed and specific experimental results.

Example 1 The same amount of commercially available compound fertilizer (component 15-15-15) was added to each test plot.
15 seedlings of commercial broccoli were planted at intervals of about 50 cm in the open field to which (plus total trace elements) was applied as the source fertilizer. Once per week after planting, a total of 6 times, in the present invention zone, the plant growth promoter of the present invention (concentration, uracil 1,980 ppm, proline 2,130 ppm, glutamic acid 820 ppm, pH 4.2 (pH adjusted with sulfuric acid) )) As the target group 2, a solution containing no glutamic acid (concentration, uracil 1,980 ppm, proline 2,1)
30 ppm and pH 4.2 (pH was adjusted with sulfuric acid) were each diluted 1,000 times, and 30 ml / tube was sprayed at once to 5 broccoli in each section, and the growth state was observed after about 2 months.

Further, for the other 5 broccoli, a solution containing glycine in place of glutamic acid (concentration, uracil 1,980 ppm, proline 2,130 ppm, glycine 820 ppm) was diluted as the target group 1 to obtain the same group as the present group. The amount was sprayed and the growth state was observed. The results are shown in Table 1.

[0019]

[Table 1]

As is clear from the results in Table 1, the group of the present invention of the complex amino acid in which glutamic acid is added in addition to uracil of the nucleic acid and proline of the amino acid is the target group 1 or the conventional group to which glycine instead of glutamic acid is added. It was found that the growth of broccoli was significantly better than that of Ward 2.

Example 2 The same amount of commercially available compound fertilizer (component 10-10-10) for each test plot
Approximately 70 commercial tomato seedlings were planted in the open field where
Planted on April 30, 1999 at cm intervals. Once every two weeks (5 times in total) after planting, dilute the following spray agent 500 times, spray 20 ml / book once to the root, and harvest on July 25 of the same year.
When the sweetness was investigated, it was as shown in Table 2. The average weight is the average weight of the top five.

[0022]

[Table 2]

Example 3 Same amount of commercially available compound fertilizer (component 10-10-10) for each test plot
6 pots were filled with the cultivated soil applied with, and 6 commercial dianthus seedlings were potted on this on September 30, 1999, and the three plant growth promoters used in Example 1 were diluted 1,500 times, Once a week (total 5 times) 10ml / spray (2 wards in each ward), 1 December
As a result of observing the flower color on the day, the present invention section 1 (two) was a bright pink flower in which pink and white could be clearly distinguished.
The present invention section 2 (two) was more vivid in color than the present invention section 1 and had a good tree vigor and a large wreath. Target area 2 (2)
Was less vivid in pink and white, and the tree vigor was weaker than that of the present invention group 1.

Example 4 Same amount of commercially available compound fertilizer (component 15-15-15) for each test plot
Twelve sweet potato seedlings were planted at 60 cm intervals on May 14, 1999 in a field applied as a fertilizer, and once a week after planting.
(7 times in total) Each of the three plant growth promoters used in Example 1 was diluted 1,000 times, and 50 ml / tube was sprayed once (3 tubes in each section).
Then, it was harvested on November 3 of the same year, and the yield was investigated. The fertilizer was applied twice on June 10 and July 20 of the same year. as a result,
The present invention ward 1 can harvest 24 sweet potatoes (combined large and small), the present invention ward 2 can be 29 29 (combined large and small), and the target ward 3 can harvest 21 sweet potatoes (combined large and small) It was The average weights are 252 g of the present invention 1 ward, 291 g of the present invention 2 ward, and the target 215
It was g.

A solution containing alanine in place of glutamic acid or its salt of the plant growth promoter of the present invention (concentration, uracil 1,720 ppm, proline 2,500 ppm, alanine 43)
The target group (3) to which 0 ppm and pH 4.8 (pH was adjusted by acetic acid) was similarly sprayed was 24 (3 in total), and the average amount was 220 g.

[0026]

Industrial Applicability The plant growth promoter of the present invention, that is, the promoter containing uracil, proline, glutamic acid or a salt thereof, effectively acts on various crops, especially flower bud formation, and promotes the growth of crops. Accelerate, increase yield, improve leaf color and vigor.

Especially when magnesium is contained, the effect becomes more remarkable. Further, the plant growth promoter of the present invention, perlite, vermiculite, can be used as a powder, mixed with a carrier such as zeolite, but when sprayed on leaves, stems, etc. as a liquid, the effect is most effective. Demonstrate well. Furthermore, since the plant growth promoter of the present invention can be prepared by using commercially available raw materials, it can be manufactured easily and at low cost.

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Claims (6)

(57) [Claims] 1. A plant growth promoter containing uracil, proline, and glutamic acid or a salt thereof. 2. The content ratio (weight) of uracil, proline and glutamic acid or a salt thereof is 1: 0.3 to 6: 0.1 to 10.
The plant growth promoter according to claim 1. 3. A plant growth promoter containing uracil, proline, glutamic acid or a salt thereof, and magnesium. 4. The content ratio (weight) of uracil, proline, glutamic acid or salts thereof and magnesium is 1: 0.
The plant growth promoter according to claim 3, which is 3 to 6: 0.1 to 10: 0.05 to 30. 5. The plant growth promoter is liquid,
The plant growth promoter according to 2, 3 or 4. 6. The plant growth promoter according to claim 5, which has a pH of 3.0 to 6.5.