JPS63301721A - Medium for plant growth - Google Patents

Abstract

PURPOSE:To contrive to form a medium for plant growth, preservable for a long period, readily handleable, having excellent water retention characteristics, by blending a medium for plant with a mixture consisting of a substance having water retaining ability and a tacky solidifying substance, molding the mixed medium and solidifying. CONSTITUTION:The medium for plant growth is formed by molding a medium comprising a mixture consisting of a substance having water retaining ability and a tacky solidifying substance having properties of showing tackiness in the presence of water and of solidifying by drying and solidifying. Vermiculite, fibrous substance, zeolite, ceramic material and rock wool may be cited as the substance having water retaining characteristics. Agar, gelatin, carrageenan, montmorillonite, pullulan and polyvinyl alcohol may be cited as the tacky solidifying substance.

Description

[Detailed Description of the Invention] Cliff 1 "Boriri"Soil" The present invention provides a medium for tissue culture of plants, a medium for germination of plants, and a method for replanting plants in soil after tissue culture, as well as for cuttings. The present invention relates to a plant growth medium suitable for use as a medium for plants, etc.

Powdered medium containing various culture medium components in powdered form has been commercially available as a plant growth medium.

However, although such a powdered medium can be stored for a long time, when using it, it is necessary to add an appropriate amount of water and a gelling substance such as agar and heat sterilize it to prepare it as a plant growth medium. Therefore, there is a practical problem that it is inconvenient for users such as farmers to handle.

The present invention has been developed in consideration of the above-mentioned problems with conventional plant growth media, and not only can be stored for a long period of time, but also requires sterile water when used. An object of the present invention is to provide a plant growth medium that is easy to handle and can be effectively applied as a medium with good water retention by simply adding water and rehydrating.

This plant growth medium also includes a medium for tissue culture of plants, a medium for germination of plants, and a medium for replanting plants in soil after tissue culture (referred to as i91 medium). It is also effective as a medium for cuttings.

The present invention will be explained in detail below.

The present invention is characterized by a culture medium containing a mixture of a substance having a water-retaining ability, such as vermiculite, and a sticky solidifying substance, such as agar, which exhibits stickiness in the presence of water and solidifies upon drying. It is a plant growth medium made by molding and solidifying.

A wide variety of substances can be used as substances having a water-holding capacity to be used in the medium of the present invention to increase the amount of water, as long as they have good water-holding capacity and do not adversely affect the growth of plants. , cellulosic materials such as vermiculite, zeolite, fiber bulbs, water-retentive fibrous materials such as water moss,
Examples include ceramic materials and rock wool (asbestos).

These substances may be used alone or as a mixture of two or more.

Moreover, the adhesive solidified material used in the present invention includes various types of adhesive solidified materials as long as they exhibit adhesiveness in the presence of water and solidify upon drying, as long as they do not adversely affect the growth of plants. Examples of such adhesive solidifying substances include agar, gelatin, carrageenan, mont"morillonite, pullulan, and polyvinyl alcohol.

In the present invention, a mixture of the above-mentioned water-retaining substance and sticky solidified substance in the presence of water is used as a plant medium, for example, MS.
The mixed medium is mixed with a medium, and the mixed medium is shaped into sheets, pellets,
It is formed into a tablet, granule, or powder, and the solidified product is used as a culture medium. In addition, in the present invention, a mixture obtained by adding nutrients such as fertilizer components to a mixture of a substance having a water-retaining ability and a sticky solidified substance with water, and molding and solidifying the mixture in the same manner as above can also be used as a culture medium. Can be done.

The proportion of the mixture of the above-mentioned water-retaining substance and the sticky solidified material is not particularly limited. It is best to mix in the presence of

For example, when mixing fiber bulbs and agar, add water to Loom 1 at a ratio of 5g of fiber bulbs and 0.25g of agar.
It is best to add and mix.

Next, in order to form the mixture obtained as described above with a plant medium, or the mixture to which a fertilizer component, etc. is added, into a sheet, for example, 10 to 15 v.
It is best to pour the mixture into a tray to a thickness of about 100 lbs. and let it dry and solidify. In addition, an extruder is used for this molding,
In particular, it is also possible to use a two-wheeled extruder. To solidify after molding, drying is usually performed.Drying can be performed by a known drying method, but freeze-vacuum drying allows air to be included in the dried medium, so when using it, it is difficult to root the plants. This is a particularly preferred drying means for accelerating drying.

To form the above mixed culture medium or a mixture to which fertilizer components, etc. have been added, into pellets or tablets, it is best to use a conventional method.Also, to form the above mixed medium or mixture into granules, it can be formed by known granulation methods. The granulated medium may be dried and solidified using a method, or the dried and solidified medium may be crushed into granules.Furthermore, the mixed medium or mixture may be pulverized into powder. To do this, it is best to dry and solidify it and then grind it into powder.

In order to use the medium formed into a sheet, pellet, tablet, granule, or powder as described above and dried and solidified for plant growth, the desired plant seeds to be grown on the surface of the medium are used for germination. Pre-adhesive, for example starch glue,
Use a plant germination medium that is fixed with a natural glue or synthetic adhesive such as gum arabic, or directly embedded with seeds, and before use, add an appropriate amount of water to the medium to rehydrate it. If you do this, you will see germination over time.

In addition, replanting plants tissue-cultured with this medium in soil,
In other words, in order to use it for acclimation, the plant body obtained by tissue culture is thoroughly washed with water to remove the medium components, and then transferred to the soil and kept in a humid state by adding water to allow rooting. It is recommended to promote the cuttings, and once roots have formed, transplant the cuttings directly into the soil in a field.Also, to use cuttings, stick the cuttings into a medium, and once roots have appeared, transplant the cuttings directly into the soil. good.

Note that nutritional components and other components can be added to the culture medium according to the present invention, and in that case, it is preferable to add them when forming the medium into the sheet, pellet, tablet, granule, or powder form.

As described above, according to the present invention, it is possible to provide a plant growth medium suitable for germination and acclimatization that can be stored for a long time, is easy to handle, and is made of materials that can be obtained at low cost. It can be said that it is very convenient for people.

EXAMPLES The present invention will be specifically described below with reference to Examples.

Example: A mixture of 27 g of Toyosato Kosho fiber bulbs and 3 g of agar was mixed with 2 concentrations of MS medium (sucrose-free) IZ.Next, this mixed medium was heated to dissolve the agar. Aluminum tray (25cm x 30cm x 3c
m) to a thickness of about 1 cm, and was left to cool to gel.

The obtained sheet-shaped gelled product was frozen at a temperature of -35°C, and then freeze-vacuum dried under a vacuum of -Q, l torr to obtain a sheet-shaped medium.

After standing, 750mj! was added to the medium obtained above. After rehydrating the medium by adding sterile water, plants grown according to the following procedure were planted in this medium.

Sterilized Saintpaulia leaf sections were placed on MS medium supplemented with 1+wg of naphthalene acetate and 1 mg of benzyladenine, and cultured under illumination at a temperature of 25° C. for 16 hours. After 2 months, the seedlings that had differentiated into foliage were transplanted to a hormone-free MS medium and cultured for 1 month under the same conditions as above.

The 3 cm long seedlings obtained by this culture were
The plants were taken out from the S medium, the roots were thoroughly washed with water to remove medium components, and then planted in the above-mentioned rehydrated plant growth medium, covered to prevent drying, and grown. 7-1
After 0 days, the coating was removed and the plants were grown under natural conditions, and the growth was good and comparable to conventional plants.

Example 2 0.0% of naphthalene acetic acid was added to Perlite 300w It. l
165 s of water to which ppm and slow-release fertilizer components were added and 8.25 g of polyvinyl alcohol were mixed and the mixture was heated in an autoclave to a temperature of 120° C. for 5 minutes.

The resulting mixture was poured into an aluminum mold (bottom diameter 4.5 cm +
, a trapezoidal cone with a top diameter of 7c and a height of 4c+w) was filled to the top and molded.

After the obtained molded product was released from the mold, it was dried at a temperature of 100° C. for 4 hours to obtain a solid medium.

Next, enough water was added to the dry solid medium obtained above to generate free water, and cuttings were made according to the following procedure.

A hole was formed on the top surface of the dry solid medium, a carnation shoot taken from the branched part was inserted into the hole, and the top was covered with a vinyl chloride resin film and left indoors. Rooting was observed.

The growth after that was also good, and it was comparable to the conventional one.

Procedural amendment July 21, 1988 Director General of the Patent Office Kunio Ogawa 1, Indication of case Patent Application No. 142233, 1988 2
, Title of the invention: Plant growth medium 3, Relationship with the person making the amendment: Name of patent applicant: Kyodo Seizo Co., Ltd. 4, Agent address: Shinbashi Kokusai Building 5, 2-7-7 Higashi-Shinbashi, Minato-ku, Tokyo, Amendment The date of the order: 6, the number of inventions to be increased by the amendment, 7, the description subject to the amendment, 8, and the description of the contents of the amendment are amended as follows.

(1) On page 4, line 9, replace “various things” with “
``Various things''.

(2) In the first line of page 8, the word "acclimatization" is corrected to "acclimation."

(3) In the 6th line of the same page, the text "Example" is amended to read "Example 1."

Claims (3)

[Claims] (1) A plant growth medium made by molding and solidifying a medium containing a mixture of a substance that has a water-holding capacity and a sticky solidifying substance that exhibits stickiness in the presence of water and has the property of solidifying upon drying. (2) The substance having water retention capacity is one or a mixture of two or more selected from the group consisting of vermiculite, fibrous substances, zeolites, ceramic materials, and rock wool, as described in claim (1). A medium for growing plants. (3) The plant growth medium according to claim (1), wherein the sticky solidifying substance is selected from the group consisting of agar, gelatin, carrageenan, montmorillonite, pullulan, and polyvinyl alcohol.