JPS60172914A - Foliar application agent - Google Patents

Abstract

PURPOSE:A foliar application agent, containing a dialyzate of a brown algal hydrolyzate or a mixture thereof with a phosphate or potassium salt, and capable of giving good quality improving effect on fruits and promoting the growth of leaf vegetables and medicinal herbs. CONSTITUTION:A foliar application agent containing an outer solution obtained by dialyzing a hydrolyzate of a brown alga, preferably of the family Fucaceae grown in Norway adjusted to about 5-20% solid content thereof through a semipermeable membrane, e.g. cellophane, collodion or gel cellophane membrane or parchment paper, as a dialyzate or a mixture thereof with one or more salts selected from phosphates such as potassium primary phosphate and potassium salts such as potassium acetate in an amount of preferably 0.3-1pts. based on 1pts. solid materials in the above-mentioned dialyzate. The application agent is capable of promoting the growth of fruit trees, fruit vegetables and leaf vegetables or medicinal herbs and preventing disease and insect damage by application thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foliar spray, and more particularly to a foliar spray for improving the quality of fruits of fruit trees and vegetables, and promoting the growth of fruit vegetables and medicinal herbs.

Conventionally, attempts have been made to use various chemicals and fertilizers to improve the quality of fruits of fruit trees and vegetables.
The use of plant hormones such as etyclozate has been put into practical use in J. However, such plant hormones have problems such as weakening of tree vigor when used continuously, and there is a desire for quality improving agents other than plant hormones that have an equivalent or better quality improving effect.

In view of these circumstances, we conducted intensive research to find an excellent quality-improving agent other than plant hormones.
Hydrolyzate of brown algae and the combination of it and phosphate can promote the enlargement and coloring of fruits of various fruit trees and fruit vegetables including mandarin oranges, increase sugar content, increase sugar content, etc. without causing problems such as weakening the tree strength even when used repeatedly.
It was found that it exhibited excellent quality improvement effects such as acid reduction, and the applicant has already filed a patent application (Japanese Patent Laid-Open No. 57-58
No. 828 and JP-A-58-144'309).

Subsequently, further research revealed that foliar spraying of the dialysate of the brown algae hydrolyzate or a combination of this with phosphates and potassium salts improved the quality of the fruit. Furthermore, he learned that it was possible to promote the growth of fruit vegetables and medicinal herbs, leading him to complete the present invention.

That is, the present invention provides a foliar spray containing a dialysate of brown algae hydrolyzate as an active ingredient, and
The present invention also provides a foliar spray containing the dialysate and one or more salts selected from the group consisting of phosphates and calylum salts as active ingredients. According to the present invention, by spraying the foliar spray on fruit trees and fruit vegetables, it is possible to significantly promote the enlargement and coloring of the fruits, as well as increase in sugar and decrease in acid, thereby stably producing high yields of fruits of good quality. You can get it at

Furthermore, by spraying it on leafy vegetables and medicinal herbs, growth can be promoted and pests and diseases can be prevented.

Thus, the foliar spray of the present invention is basically a foliar spray in the form of a liquid or solid dosage form, which is obtained by adding phosphate and/or potassium salt to dialysate of brown algae hydrolyzate or dialysate of brown algae hydrolyzate. .

The brown algae hydrolyzate used in the preparation of the dialysate may be an alkaline hydrolyzate of brown algae as disclosed in JP-A-57-58828 and JP-A-58-144309. 1, that is, raw material brown algae include those belonging to the order Fucusales a3 and the order Laminata, for example, Ame:1 phyllum nodozam (A
5cophyl lum nodosum), fuchs・
Fucus 5erratus, Fucus vesiculosus
sus), other Fucusaceae, Ascoceilaceae, Zurbilaceae, Nobuiaceae,
Examples include those of the family Himantariaceae, the family Scabiesaceae, the family Sargassumaceae, the family Hijikirinaceae, the family Laminaceae, the family Wakameaceae, and the family Araceae, and these may be used alone or in combination of two or more. In particular, from the viewpoint of effectiveness, those of the Fucus family from Norway are preferred. Alkaline pressure hydrolysis of raw material brown algae can be carried out using a conventional method. 1-3% (same by weight below) aqueous solution of an alkali such as 150-3%
350I! , and hydrolysis is carried out at a pressure of 2 to 5 k (1 part cm 2 ) and a temperature of 100 to 200° C. for 4 to 8 hours.

The degree of hydrolysis can be controlled by pressure, temperature and time, and usually 3.5k when using a 2% alkaline aqueous solution.
Hydrolysis at 135° C. for about 6 hours under a pressure of g/cm 2 is sufficient. After hydrolysis, the hydrolyzed solution is separated by a conventional method such as centrifugation and filtration with a drum filter.

This hydrolyzate can be used as it is for the preparation of oxides as a brown algae hydrolyzate, and if necessary, phosphoric acid,
Ii1 acid, hydrochloric acid, acetic acid, citric acid, etc. l) H approx. 7
It can also be used for oxide preparation after being adjusted to neutral to weakly acidic as shown in 5. Roughly, if desired, solids content 70-95%
It may be concentrated to a certain extent.

The obtained brown algae hydrolyzate is dialyzed according to a conventional dialysis procedure to obtain a desired dialysate.

The dialysate according to the present invention is a so-called external dialysis solution, in which the solid content of brown algae hydrolyzate is adjusted to about 5 to 20%, and the cellophane membrane, collodion membrane, or gel cellophane membrane with a pore size of 20 Å or more is used. , using a semipermeable membrane such as parchment paper or polyvinyl alcohol membrane, at 18 to 40°C for 5 to 30 hours against water or hot water with an amount of 10 to 60 times the solid content of the hydrolyzate. The external fluid is used as the dialysate. The dialysate generally has a solids content of 2-10%, 1) H5-10
20-45% carbohydrates, 4-1% protein in dry matter
0%, ash content 40-60%.

The obtained dialysate can be used as it is as a foliar spray of the present invention, or it can be concentrated to a solid content of about 30 to 70% or diluted with water etc. at a good temperature. It can be dried to make a solid foliar spray.

Furthermore, in the present invention, various phosphates,
C may also be used by adding potassium salt. Phosphates include potassium hydrogen phosphate, dipotassium hydrogen phosphate, sodium phosphate, etc. Potassium salts include potassium acetate,
Examples include potassium phosphate and potassium carbonate, and these may be used alone or in combination of two or more. These salts may be added and mixed directly to the obtained dialysate itself, or may be added and mixed to its concentrate, diluted product, or solidified product. Usually, the solid content of the dialysate is 1 part (by weight). Good results can be obtained by using a ratio of 0.3 to 1 part per part (hereinafter the same applies).

If desired, additives such as interfacial agents and other fertilizer ingredients may be added to the foliar spray of the present invention to reduce surface tension and improve foliar visibility. .

The foliar spray of the present invention is usually diluted with water so that the solid content of the dialysate is 50 to 5001) pm, and is applied to mandarin oranges and other citrus fruits, fruit trees such as grapes, strawberries, etc.
・It is used by spraying on the leaves and stems of fruit vegetables such as 71-, leafy vegetables such as lettuce and cabbage, and medicinal herbs such as Toki, Ugusa, and Gennoshoko. The actual spraying conditions can be determined as appropriate by taking into account the vigor of the tree, the weather, etc. For example, in the case of mandarin oranges, the spraying conditions are 1 to 1 between the 60th day and 150th day 0 after 80% of full bloom.
Spray several times, and in the case of leafy vegetables and medicinal herbs, add A3 to the water at the time of irrigation in the nursery, temporary planting bed, or main field.

Furthermore, the foliar rot agent of the present invention can also be used in combination with other plant growth regulators or IN drugs.

Next, the present invention will be briefly explained using Reference Example J3 and Examples.

Reference example 1 Ascophyllum nodosum 10k washed, dried and crushed
250 λ of a 2% aqueous solution of sodium carbonate was added to the solution, and the mixture was hydrolyzed at a pressure of 3.5 kg/cm2 and a temperature of 135°C for 6 hours. After hydrolysis, it is centrifuged and filtered through a Dorahaf 1 filter to obtain alkaline hydrolyzate 2252 (solid content 4.4
%) was obtained. This was normalized and dried with a spray dryer to obtain a brown algae hydrolyzate in the form of a dark brown powder with a water content of about 7%. This is 54% carbohydrates, 4% protein in dry matter,
It contains 42% ash, and the l)H of a 1% aqueous solution is approximately 8.
．． 4C Atsu Iko.

Reference example 2 Ascophyllum nodosum 10k washed, dried and crushed
A 2% aqueous solution of potassium hydroxide (25C1) was added to () and hydrolyzed for 6 cycles at a pressure of 3.5 kg/cm2 and a temperature of 135°C. After hydrolysis, it was centrifuged and filtered through a drum filter to obtain an alkaline hydrolyzed solution. 230℃ (solid content 5.2
%) was obtained. This hydrolyzed solution was adjusted to pH 5 with 50% phosphoric acid.
6 to obtain a brown algae hydrolyzate in the form of a dark brown liquid.

Example 1 10 kg of the brown algae hydrolyzate obtained in Reference Example 1 was mixed with water for 10 kg.
Diluted twice, using a semipermeable membrane with a pore size of 20, and using 500 kg of water.
Dialysis was carried out for 24 hours at 22°C against
Concentrate at 0°C until the solid content is 30%, and collect 30 kg of dialysate.
I got it. This dialysate is I)H9.4, contains 31.2% carbohydrates, 6.6% protein, and 55.2% ash in dry matter, is a light brown liquid, and can be used as it is as a foliar spray of the present invention. Can be used.

Example 2 1 ko of dipotassium hydrogen phosphate was added to 9 ka of the dialysate obtained in Example 1 and mixed to prepare the foliar spray of the present invention.
is.

Example r: The effectiveness of each of the obtained foliar sprays was tested as follows.

(1) Two 18-year-old Satsuma mandarin trees were selected as one test plot.

The foliar spray of the present invention of Example 2 was diluted 300 times with water and sprayed on the 60th day, the 75th day, and the 90th day after treatment.As a control, a non-applied area was set up. .

In each test plot, fruits were collected from all lines on the same day (November 5th), and the yield, yield, coloration, and juice components were measured. The results are shown in Tables 1 to 3.

(See the margin below) Table 1 Table 2 Table 3 As shown in Tables 1 to 3, the foliar spray of the present invention exhibits an excellent fruit quality improvement effect.

(2) The leaf rot fj+ agent of Example 1 was diluted 300 times with water and used for raising Toki seedlings. An untreated area was set up as a control. Spraying was carried out at 10 Ch/day for 10 days on a temporary planting bed in Toki. As a result, compared to the non-applied area (only water was sprayed), the foliar spray agent of the present invention showed remarkable promotion of growth of seedlings.

Patent applicant Shinkyo Sangyo Co., Ltd.

Claims (2)

[Claims] (1) A foliar spray comprising a dialysate of brown algae hydrolyzate as an active ingredient. (2) A foliar spray comprising, as active ingredients, a dialysate of brown algae hydrolyzate and one or more salts selected from the group consisting of phosphates and potassium salts.