JPS6251601A - Stable life prolonging solution and flowering solution for cut flower - Google Patents

Abstract

PURPOSE:A life prolonging solution and flowering solution for cut flowers, containing a thiosulfatosilver complex salt which is an active constituent together with a sulfite and/or hydrogensulfite and capable of maintaining stable effect for a long period without forming precipitates. CONSTITUTION:A life prolonging solution and flowering solution for cut flowers containing 100pts.wt. water-soluble silver salt, e.g. silver nitrate or silver acetate, (A) >1,000pts.wt. water-soluble thiosulfate, e.g. sodium thiosulfate or ammonium thiosulfate, and (B) >=10pts.wt. sulfite and/or hydrogensulfite, e.g. Na salt or ammonium salt. Since the above-mentioned life prolonging solution and flowering solution are preferably acidic, an inorganic acid or organic acid or a salt thereof may be suitably incorporated, as necessary, to adjust the solution basicity when the basicity is intensified by compounding.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a stable life-extending liquid and flowering liquid for cut flowers, and more specifically, a concentrated aqueous solution to be diluted and used as a life-extending liquid and flowering liquid, comprising: The present invention relates to a stable life-extending liquid for cut flowers and a flowering liquid that maintains stable efficacy over a long period of time without forming a precipitate.

(Prior art) For flowers cut from plants, that is, cut flowers, the growth of pathogenic bacteria is suppressed in the water where the cut flowers are kept and at the cut ends.
Suppress the biosynthesis of ethylene, which is generated from cut flowers themselves and promotes overripening, overripening, aging, etc. of cut flowers, reduce the amount of water transpiration from the stomata, or supply nutrients. It has been known for a long time that the lifespan of cut flowers can be significantly extended (life extension effect).

The compound or ion is known to have a life-extending effect on cut flowers due to its bactericidal action as well as its inhibitory effect on ethylene biosynthesis within the plant body, and it has traditionally been included in many cut flower life-extending liquids and flowering liquids. has been done. In particular, in thiosulfate silver acid 18 salts such as sodium bis(thiosulfato) silver acid, silver forms negatively charged ions such as (ag(szo:+)z) '- in solution. It is a life-extending agent that has been attracting attention in recent years because it rapidly moves through the ducts of plants, effectively inhibits ethylene biosynthesis in plants, and has few harmful effects on plants.

This aqueous solution of a thiosulfate silver acid complex salt such as sodium bis(thiosulfato) silver acid is usually prepared by preparing a concentrated aqueous solution of silver nitrate and sodium thiosulfate, for example, a 100 mmol aqueous solution of each, mixed and diluted, and then used. There is. However, the aqueous solution of thiosulfate silver acid complex salt prepared in this way quickly forms a black precipitate of silver sulfide when left to stand, and its effectiveness as a life-extending liquid for cut flowers and a flowering liquid is drastically reduced. Particularly in the summer, the formation of precipitates is remarkable, and black precipitates are formed in several to ten-odd days. For this reason, cut flower life-extending liquids and flowering liquids once prepared must be used within one week, and after this period they are considered unsuitable for use and are discarded.

(Purpose of the Invention) As a result of intensive research to solve the above-mentioned problems in conventional cut flower life-extending liquids and flowering liquids, the present inventors discovered that sulfites and/or bisulfites coexist in thiosulfate silver acid complex salt aqueous solutions. The present invention has been made based on the discovery that a thiosulfate silver acid complex aqueous solution can provide a cut flower life-extending solution and a flowering solution that does not form a precipitate and maintains stable efficacy for a long period of time even after preparation, and has developed the present invention. This is what led to this.

Therefore, the present invention does not produce precipitates over a long period of time,
Another object of the present invention is to provide a life-extending liquid and a flowering liquid for cut flowers that maintain stable efficacy.

(Structure of the Invention) The life-extending liquid and flowering liquid for cut flowers of the present invention contain a water-soluble silver salt 1
00 parts by weight, (a) an amount of water-soluble thiosulfate exceeding 1000 parts by weight;
It is characterized by containing at least one kind selected from sulfites and bisulfites in an amount of 100% by weight or more.

The silver salt and thiosulfate used in the cut flower life-extending liquid and flowering liquid of the present invention are not particularly limited as long as they are water-soluble salts that form a thiosulfate silver acid complex ion in an aqueous solution, but usually, Silver nitrate or silver acetate is preferably used as the silver salt, and sodium thiosulfate or ammonium thiosulfate is preferably used as the thiosulfate. This water-soluble thiosulfate is not particularly limited, but in the present invention, 100 parts by weight of the above water-soluble root salt is used.
The amount exceeds 1,000 parts by weight. Although the upper limit is not particularly limited, it is usually 100,000 parts by weight from the economic point of view.

Furthermore, the sulfites and hydrogen sulfites contained in the cut flower life-extending liquid and flowering liquid of the present invention are not particularly limited as long as they are soluble in water. Examples of sulfites include sodium sulfite, potassium sulfite, ammonium sulfite Examples of the bisulfite include alkali metal salts and ammonium salts such as sodium bisulfite, potassium bisulfite, potassium metabisulfite, and ammonium bisulfite. In the present invention, in order to prevent the formation of precipitates over a long period of time in the resulting cut flower life-extending liquid and flowering liquid, and to maintain the potency stably, these sulfites and hydrogen sulfites are added to water-soluble roots. Regarding 100 parts by weight of salt,
It is necessary to use 10 parts by weight or more. The upper limit is
Although not particularly limited, it is usually 10,000 parts by weight.

The cut flower life-extending liquid and flowering liquid of the present invention may contain, for example, more than 1000 parts by weight of water-soluble thiosulfate and 10 parts by weight or more of sulfite and bisulfite per 100 parts by weight of water-soluble silver salt. alone or in combination in deionized water;
By mixing with sufficient stirring, a preservation solution of an appropriate concentration can be obtained. In addition, when using sodium thiosulfate as the above-mentioned thiosulfate, its hydrate NatSzOx
- Parts by weight are based on 5H and O. Each of the above groups is mixed as an aqueous solution with an appropriate concentration, but when mixing a silver salt aqueous solution and a thiosulfate aqueous solution, it is recommended to add the silver salt aqueous solution to the thiosulfate aqueous solution while stirring well. preferable. In addition, when performing operations such as dissolving, diluting, and mixing,
Preferably, no metal containers are used.

In general, the life-extending liquid for cut flowers and the flowering liquid are preferably acidic. The liquid properties of the cut flower life extension liquid and flowering liquid of the present invention mainly depend on the amount of sulfite and/or bisulfite such as sodium sulfite or sodium hydrogen sulfite. Therefore, when the basicity becomes strong due to their combination, an appropriate amount of an inorganic acid, an organic acid, or a salt thereof may be added as necessary to adjust the liquid properties.

Furthermore, the cut flower life-extending liquid and flowering liquid of the present invention may contain 8-hydroxyquinoline citrate (8-HQC), which reduces conduit closure and increases stomata closure, and has a bactericidal effect. ), sulfate (8-HQS), etc., and nutrients such as sucrose may be appropriately contained.

The life-extending liquid and flowering liquid for cut flowers according to the present invention can be used by any conventional method. Therefore, for example, when using silver nitrate as a silver salt, it is diluted to a concentration of 50 to 500 ppm when used as a life-extending liquid for cut flowers.On the other hand, when used as a flowering liquid for cut flowers, Further, the concentration is diluted to about 1/10th of that concentration, and each cut flower is treated for about several tens of minutes to about 24 hours. Furthermore, the cut flower life extension liquid and flowering liquid of the present invention can be used as a cut flower life extension liquid and flowering liquid, and can also be applied to potted plants, and by spraying the appropriate amount at the appropriate growth stage, the flowering rate can be increased. It is effective in increasing the number of flowers and suppressing flower drop and falling.

(Effects of the Invention) The cut flower life-extending liquid and flowering liquid of the present invention contain sulfite and/or bisulfite as well as the thiosulfate silver acid complex salt as its active ingredient, and are therefore stabilized compared to the conventional cut flower life-extending liquid and flowering liquid. Unlike the life-prolonging liquid and flowering liquid made from unstable thiosulfate silver acid complex aqueous solutions, it does not produce precipitates for a long period of time, and its effects are sustained even in concentrated aqueous solutions prepared in advance or after dilution. . Therefore, the life-extending liquid and flowering liquid for cut flowers according to the present invention can be stored for a long period of time. It can be used as

(Example) Examples are shown below, but the present invention is not limited to these Examples.

Each compound shown in the table was dissolved in water or an acidic aqueous solution (8-H
Q) and mix with thorough stirring to prepare cut flower life extension liquid and flowering liquid preservation liquid of the present invention (Examples 1 to 7).
) was obtained. The values in the table represent the concentrations (ppm) of each component in the storage solution after preparation. Incidentally, 1 hydrate crystals were used for citric acid and ammonium sulfite.

For comparison, in each Example, an aqueous solution containing silver salt and thiosulfate of the same type and concentration and no other components was prepared, and a comparative example (comparative example) corresponding to each Example 1 to 8 was prepared. Examples 1 to 8). However, in Comparative Example 5, since the solution after adjustment became alkaline, concentrated sulfuric acid (97%)
was added to make the solution acidic to 500 ppm.

For each aqueous solution of the above Examples and Comparative Examples, a stability test was conducted upon standing. The test will be an accelerated test, so
Each sample was left at 60° C. for 24 hours, and the amount of precipitate produced was visually compared.

The results are shown in the table. According to the life-extending liquid for cut milk and flowering liquid of the present invention, substantially no precipitate was formed over a long period of time, but the aqueous solutions of the comparative examples were all unstable and a large amount of black precipitate was formed. .

Claims (1)

[Claims] (1) For 100 parts by weight of water-soluble silver salt, (a) 10
Stable life-extending liquid for cut flowers and flowering characterized by containing water-soluble thiosulfate in an amount exceeding 00 parts by weight, and (b) at least one selected from sulfites and bisulfites in an amount of 10 parts by weight or more liquid.