JPH06172119A - Method for promoting growth of crop - Google Patents

Abstract

PURPOSE:To obtain a method for promoting the growth so as to increase the yield by promoting the growth after germination of a crop. CONSTITUTION:Seeds, seed tubers or bulbs of a crop are treated with a fruit juice of a tangerine orange pericarp or an extract therefrom containing a large amount of a natural type abscisic acid which is one kind of phytohormones. A ground tangerine orange pericarp can directly be used as the tangerine orange pericarp or the extract therefrom or a dried substance of the ground pericarp may be used. Furthermore, a filtrate obtained by removing a solid component from the ground pericarp, its dried substance, a solution prepared by adding a hydrophilic organic solvent to the ground pericarp and removing the solid component therefrom or its dried substance, etc., may be used.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for promoting the growth of crops. More specifically, it relates to a growth promoting method for increasing the yield by promoting the post-emergence growth of a crop.

[0002]

2. Description of the Related Art An increase in yield by promoting the growth of crops is the greatest challenge of agricultural technology. Many techniques have been devised as methods and means for this purpose.

One of the methods is to promote the growth of crops and increase the yield by utilizing plant hormones. The use of the plant hormones gibberellins, auxins and kainins has already become popular as a technology for promoting the growth of some crops and increasing the yield (“fine chemical”).
July 15, 1984, pp. 3-18, "Current status and development trends of the use of plant growth regulators").

[0004]

However, the method of utilization and the degree of efficacy for producing practically effective efficacy are still limited, and the development of a more effective process has no significance in terms of agricultural production. large.

Natural abscisic acid is known as one of plant hormones together with gibberellin, auxin, kainin and the like. It is known that the abscisic acid is related to the growth amount based on the results of the study on the relationship between the fluctuation of the endogenous amount in the plant body during the growth process of the plant and the growth amount (Ann. Rev. Plant Physiol. Plant Mol. . Biol. 198
8th Year Vol 39, pp. 439-473, "Metabolism and
Physilogoy of Abscisic acid "). It is also known that abscisic acid has an action of improving the germination rate of seeds which have deteriorated in germination ability due to aging (Japanese Patent Publication No. 1-368).
No. 01 publication).

However, the effect of widely promoting the growth of crops and increasing the yield is not known.

[0007]

[Means for Solving the Problems] The inventors of the present invention have diligently studied the search for an effective method superior to the conventional knowledge regarding the technology for promoting crops by utilizing plant hormones, and found that natural abscisic acid has an excellent effect. I found that I would play, and proposed it.

Furthermore, as a result of examining the ingredients of edible fruits which are safer for use in food, the present inventors have found that mandarin orange peel contains a large amount of natural abscisic acid (Utsunomiya et al .: Journal of the Horticultural Society Vol. 51 No. 2). p135 (1982))
Therefore, it was found that the extract from citrus peel is effective for promoting growth and increasing yield.

That is, the present invention is a method for promoting growth of a crop, which comprises treating seeds, seed potatoes or bulbs of a crop with an orange juice or an extract from an orange peel.

The present invention will be described in detail below.

In the present invention, it is important to use citrus peel or an extract from citrus peel as a growth promoter. The extract from citrus peel is, for example, one obtained by extracting citrus peel with water and / or a hydrophilic organic solvent, and examples of the hydrophilic organic solvent include ethyl alcohol, methyl alcohol, acetone and the like. To be

As the citrus peel or the extract from the citrus peel, the citrus peel can be ground and used as it is, or it can be a dried product of the ground citrus, and further, the solid component is removed from the ground citrus. Alternatively, it may be a filtrate or a dried product thereof, or a solution obtained by adding a hydrophilic organic solvent to a ground product to remove solid components, or a dried product thereof.

In the present invention, rather than using the citrus peel as it is as a growth promoter, it is preferable to use an extract from the citrus peel as a growth promoter.

When used as a growth promoter, the citrus peel or citrus peel extract is used as an aqueous solution containing 0.1 to 500 g, preferably 1 to 10 g, of fresh weight of citrus peel in 1 liter. It is important to treat crop seeds, seed potatoes or bulbs. The treatment method is usually dipping. The immersion time is usually several seconds to 2 days, preferably 30 minutes to 1 day.

In the present invention, the treatment with the citrus peel or the extract from the citrus peel is carried out before planting, that is, substantially immediately before conventional planting, that is, several days before planting in ordinary agricultural work, although it varies depending on the crop. It is preferable to carry out during the period from to.

In the growth promoting method of the present invention, the citrus peel or the extract from the citrus peel is treated with other plant growth regulators, auxiliaries such as spreading agents, emulsifiers, wetting agents, dispersing agents, sticking agents and disintegrating agents. You may use it with an agent etc. In the growth promoting method of the present invention, citrus peel or an extract from citrus peel can be used in any formulation. For example, it may be a powdery or granular solid containing citrus peel or an extract from citrus peel, or may be prepared by adjusting these to a high concentration in a solvent such as a small amount of water. May be prepared by adjusting the concentration of these to use with water.

Examples of the auxiliary agent used here include the following. As the liquid carrier, water, ethanol,
Examples thereof include alcohols such as methanol. As the emulsifier or dispersant, a surfactant is usually used, and examples thereof include anionic surfactants such as higher alcohol sodium sulfate, stearyl trimethyl ammonium chloride, polyoxyethylene alkylphenyl ether, lauryl betaine, and cationic surfactants. Examples include activators and zwitterionic surfactants. When using these carriers, it is important to examine and use the most suitable one for promoting the effect of the citrus peel extract.

The crop to which the growth promoting method of the present invention is applied is not particularly limited. For example, root vegetables such as radish, beet, and potato that harvest roots, fruit vegetables such as tomatoes and cucumbers, grains and beans such as rice, wheat, adzuki beans, spinach, leaf vegetables such as cabbage, and stems and stems are used. Examples include sugar cane.

[0019]

EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited thereto.

Example 1 Preparation of Treatment Solution 500 g of mandarin orange peel was soaked in 500 ml of 80% methanol and ground with a homogenizer to homogenize. Insoluble matter was removed by filtration, concentrated, and then freeze-dried. The dried matter was ground in a mortar and powdered to obtain 100 g of an extract from citrus peel. In addition, this tangerine peel extract 5
What was melt | dissolved in 100 ml of water was used as the extract aqueous solution from the mandarin orange peel.

Example 2 (Promotion effect of radish growth on radish) At the end of April, seeds of Japanese radish (cultivar Akamalcomet) were diluted with an aqueous extract solution from mandarin orange peel for 2 hours and 20 times for 24 hours. Immediately after soaking in the liquid or water as a control, the seeds were immediately sown in an open field, and the conventional customary cultivation was controlled. Twenty days after seeding, 20 strains with good growth were harvested from each plot, and the root weight (g) was measured. The average weight is shown in Table 1.

[0022]

[Table 1]

As is clear from Table 1, the seeds were treated with the extract from the citrus peel, and the excellent growth was observed. Example 3 (Growth-promoting effect of spinach) At the beginning of April, spinach seeds were soaked for 24 hours in each solution obtained by diluting the aqueous solution of the extract of citrus peel 2-fold, 20-fold or in water as a control. Then, the seeds were immediately sown in an open field, and the conventional customary cultivation was controlled. Thirty-five days after sowing, 30 well-growing plants were harvested from each plot, and foliage weight (g)
Was measured. The average weight is shown in Table 2.

[0024]

[Table 2]

As is clear from Table 2, the seeds were treated with the extract from citrus peel, and the excellent growth was observed.

Example 3 (potato growth promoting effect) At the beginning of September, potato (variety: Danshak) seed potatoes were diluted for 5 hours with an aqueous solution of extract from mandarin orange peel diluted 2-fold and 20-fold. ,
Alternatively, it was dipped in water as a control plot, immediately planted in an open field, and managed under general customary cultivation by a conventional method. 8 from planting
After 0 days, moat was taken and the average potato weight (g) per strain was measured for each 20 strains. The results are shown in Table 3.

[0027]

[Table 3]

As is clear from Table 3, the treatment of seed potato with the extract from mandarin orange peel showed excellent enhancement of growth.

[0029]

According to the present invention, an excellent effect of promoting the growth of crops can be obtained. That is, the yield can be increased by promoting the growth of the crop. It can also promote germination of crops.

Claims (1)

[Claims] 1. A method for promoting the growth of a crop, which comprises treating the seeds, seed potatoes or bulbs of a crop with an orange juice or an extract from an orange peel.