JPS61207301A - Life-prolonging and blooming liquid for cut flower - Google Patents

Abstract

PURPOSE:To provide the titled life-elongating and blooming liquid having high stability, capable of keeping the effect for a long period without forming a precipitate, without necessitating the mixing immediately before use, by adding a water-soluble thiosulfate and sulfite, etc., to a water-soluble silver salt at specific ratios. CONSTITUTION:100pts.(wt.) of a water-soluble silver salt such as silver nitrate, silver acetate, etc., is mixed, under vigorous agitation, with an aqueous solution produced by dissolving (A) 400-1,000pts. of a water-soluble thiosulfate such as sodium thiosulfate, ammonium thiosulfate, etc., and (B) 10-10,000pts. of one or more sulfites such as Na2SO3, (NH4)2SO3, etc., and/or bisulfites such as NaHSO3, potassium metasulfite, etc., to obtain a stock solution having a proper concentration. The liquid can be applied also to a flowering plant in a pot. The blooming ratio can be improved and the floral abscission and flower- bud abscission can be suppressed by the application of the liquid at a proper rate in a proper period in rowing stage. The produced solution can be stored for a long period and can be used only by diluting to a proper concentration with water.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a life-extending liquid for cut flowers and a flowering liquid.

Specifically, the present invention relates to a life-extending liquid for cut flowers and a flowering liquid that does not produce precipitates and maintains its efficacy in a stable state over a long period of time after preparing a concentrated liquid of the life-extending liquid and flowering liquid.

(Conventional technology) For flowers cut from plants, that is, cut flowers, the growth of pathogenic bacteria is suppressed in the water where the cut flowers are placed and at the cut ends, and the remaining life of the cut flowers itself is suppressed to prevent overripening, overripening, and aging of the cut flowers. The lifespan of cut flowers can be significantly extended by suppressing the biosynthesis of ethylene gas, which promotes the growth of flowers, reducing the amount of water evaporation from the stomata, or supplementing nutrients. ) has been known for a long time.

Silver compounds or silver ions are known to have a life-extending effect on cut flowers due to their bactericidal action and inhibition of ethylene biosynthesis within the plant body, and have traditionally been used in many cut flower life-extending liquids and flowering liquids. has been included. especially,
In thiosulfate silver acid complexes such as sodium bis(thiosulfato) silver acid, silver forms a negatively charged complex ion, e.g. It is a life-extending agent that has been attracting attention in recent years because it moves quickly through ducts, effectively suppresses ethylene biosynthesis in plants, and has few harmful effects on plants.

This thiosulfate silver acid complex solution such as sodium bis(thiosulfato) silver acid is usually prepared by making a concentrated solution of silver nitrate and sodium thiosulfate, for example, 100 mM each, storing it in a brown bottle in a cool, dark place, and mixing it immediately before use. It is also prepared and used diluted. However, when the thiosulfate silver acid complex solution prepared in this way is left to stand, it forms a black precipitate of silver sulfide, and its efficacy as a cut flower life-extending solution and a flowering solution decreases by mN. Particularly in the summer, the formation of precipitates is remarkable, and black precipitates are formed in several to ten-odd days. For this reason, it is necessary to use the cut flower life-extending liquid and flowering liquid once prepared, usually within one week, and to discard them after that period.

(Objective of the Invention) In view of the instability of the conventional thiosulfate silver acid complex solution mentioned above when left standing, the present invention has been developed to maintain stable efficacy without forming a precipitate for a long period of time even after the thiosulfate silver acid complex solution is prepared. The purpose of the present invention is to provide a life-extending liquid and flowering liquid for cut flowers that can be maintained.

(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
For 00 parts by weight, water-soluble thiosulfate 400-10
00 parts by weight and 10 to 10,000 parts by weight of at least one selected from sulfites and hydrogen sulfites.

The silver salt and thiosulfate used in the cut flower life extension 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 with both compounds in an aqueous solution, but usually, As the silver salt, silver nitrate or silver acetate is preferably used, and as the thiosulfate, sodium thiosulfate or ammonium periosulfate is preferably used.

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, Alternatively, alkali metal salts and ammonium salts such as ammonium sulfite can be mentioned, and examples of the hydrogen sulfite include alkali metal salts and ammonium salts such as sodium hydrogen sulfite, potassium hydrogen sulfite, potassium metasulfite, or ammonium hydrogen sulfite.

Next, preferred methods for preparing the cut flower life-extending liquid and flowering liquid of the present invention are shown below. For 100 parts by weight of water-soluble silver salt, 400 to 1000 parts by weight of water-soluble thiosulfate and 10 to 100 parts of sulfite and bisulfite alone or in mixture.
00 parts by weight of the solution are dissolved in chlorine-free water and mixed with sufficient stirring to prepare a storage solution with an appropriate concentration. When sodium thiosulfate is used as the thiosulfate, the parts by weight are based on its hydrate NazSzO3.511□0. In the winter, each is mixed as an aqueous solution of an appropriate concentration, but when mixing a silver salt aqueous solution and a thiosulfate aqueous solution, be sure to add the silver salt aqueous solution to the thiosulfate aqueous solution while stirring well. It is preferable to do so.

Further, it is preferable not to use a metal container during operations such as dissolving, diluting, and mixing.

In addition, acidity is generally preferable for the life-extending liquid for cut flowers and flowering liquid; It depends on the blending amount, and when the basicity becomes stronger due to the blending,
In order to adjust the liquid properties, an appropriate amount of an inorganic acid, an organic acid, or a salt thereof is added as necessary.

Furthermore, the cut flower life-extending liquid and flowering liquid of the present invention may optionally contain 8-hydroxyquinoline citrate (8-HQC), which reduces conduit closure, increases stomata closure, and has a bactericidal effect. or sulfate (8-HQS)
Of course, nutritional supplements such as sucrose and the like may be included as appropriate.

The life-extending liquid for cut flowers and flowering liquid of the present invention prepared in this manner may be used in a commonly used manner. For example, when using silver nitrate as a silver salt, , its concentration is 50 to 500 ppm
When used as a flowering liquid for cut flowers, it is diluted to about one-tenth the concentration, and the cut flowers are treated for several to 24 hours each. In addition, 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 can increase the flowering rate by spraying the appropriate amount at the appropriate growth stage. ,
It is effective in suppressing flower drop and falling.

(Effects of the Invention) The cut flower moon life extension liquid and flowering liquid of the present invention dissolve sulfite or/and bisulfite in a solution of thiosulfate silver acid complex salt as an active ingredient to stabilize the solution. Unlike life extension and flowering solutions that are made from unstable thiosulfate silver acid complex solutions, there is no need to mix and prepare the solution immediately before use, and once the solution is prepared, it does not form a precipitate for a long period of time, maintaining its effect. I can do it. Therefore,
The cut flower moon life extension liquid and flowering liquid of the present invention can be stored for a long period of time, and can be used as a life extension liquid and flowering liquid for cut flowers, etc., by simply diluting the liquid as appropriate depending on the purpose.

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

Each compound shown in the following table was mixed with water or an acidic aqueous solution (8-H
In case of QC. ) and mixed with thorough stirring to obtain cut flower moon life extension liquid and flowering liquid preservation liquid of the present invention (Examples 1 to 16). The values in the table represent the concentrations (ppm) of each component in the storage solution after preparation. Note that monohydrate crystals were used for citric acid and ammonium sulfite.

For comparison, an aqueous solution containing the same type and concentration of silver salt and thiosulfate as in each example and no other components was prepared, and comparative examples (comparative examples 1 to 16) corresponding to each example were prepared.
). However, in Comparative Example 11, the solution after preparation became alkaline, so concentrated sulfuric acid (97%) was
ppm to make the solution acidic.

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

The results are shown in the table. According to the cut flower moon extension liquid and flowering liquid of the present invention, substantially no precipitate was formed over a long period of time, but the solutions of each comparative example were all unstable and a large amount of black precipitate was formed. .

Procedural amendment W (voluntary) Date of September 1985

Claims (1)

[Claims] For cut flowers, containing 400 to 1,000 parts by weight of water-soluble thiosulfate and 10 to 10,000 parts by weight of at least one selected from sulfites and hydrogen sulfites per 100 parts by weight of water-soluble silver salt. Life extension liquid and flowering liquid.