JPH01311007A - Method for treating plant - Google Patents

Abstract

PURPOSE:To prevent disease injuries of a plant, simultaneously promote germination and growth and contrive remarkable improvement in yield by treating the plant with a ferrous and ferric salt. CONSTITUTION:A seed, seed tuber, bulb, cutting, etc., of a plant is brought into contact with a ferrous and ferric salt expressed by formula I (n and m are positive integers), e.g., expressed by formula II-III, by, e.g., dissolving the above-mentioned iron salt in water to normally form an aqueous solution in about 1-10<-12>ppm concentration and dipping the afore-mentioned plant therein or applying the above-mentioned aqueous solution to the afore-mentioned plant, etc., to promote transmigration of the components stored in the afore-mentioned plant body into components to be utilized and improve germination ratio, rooting ratio, further disease injury resistance and fertilizer absorptivity of young seedlings after germination. Thereby, growth is remarkably improved to considerably increase yield.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for treating plants that prevents plant diseases and promotes germination and growth.

[Conventional technology]

Examples of known divalent and trivalent iron salts include Fe8C17
-xH2O, Fe8C18-XH2O, etc., but these divalent and trivalent iron salts are thought to be a complex of divalent iron and trivalent iron.

These divalent and trivalent iron salts have so far been recognized to have an adsorption effect based on divalent iron.

[Object of the present invention]

However, the present inventors have discovered that these divalent and trivalent iron salts have a remarkable bioactivation effect.

The object of the present invention is to utilize divalent and trivalent iron salts having such effects for preventing plant diseases and for germination and growth.

[Configuration of the present invention]

Therefore, the present invention is characterized in that a divalent and trivalent iron salt is brought into contact with plants.

(Divalent and trivalent iron salt) The divalent and trivalent iron salt used in the present invention has the following structure.

nFec12·mFec18·xH2O where lcn and mi are positive integers.

The main divalent and trivalent iron salts mentioned above are listed below. They are prepared by dissolving them in an aqueous solution and carefully evaporating the resulting solution while preventing contact with air.

FeC1-2Fecl -xE O KOH is added at the boiling point to a highly concentrated water bath solution of ferrous chloride and ferric chloride, and the resulting hydroxide is precipitated. It is prepared by separating and dissolving the hydroxide in an aqueous HCJ solution and evaporating the resulting solution over calcium oxide and concentrated sulfuric acid.

FeC1-FeC1-xHO 1, a divalent iron ingot, ferrous chloride is dissolved in an aqueous solution of caustic soda, and then the solution is neutralized with an aqueous solution of hydrochloric acid.

The resulting neutralized solution is evaporated to obtain crystals, the crystals are collected and dissolved in an isopropanol-water mixture, and the resulting solution is filtered and concentrated.

2. Dissolve ferric sulfate from a trivalent iron salt in an aqueous hydrochloric acid solution, then add the resulting solution to t! ! to obtain a crystal. It is obtained by collecting the crystals and dissolving them in an inglobanol-water mixture, filtering the resulting solution, and then concentrating it.

The above-mentioned FeCJ-FeCl-XHoff is a new compound and has not been previously known.

(Applicable plants) The plants treated in the present invention are plant seeds.

All types of plants can be used, such as seed potatoes, bulbs, or cuttings.

(Use of divalent and trivalent iron salts) To treat the plants listed in 1H with the divalent and trivalent iron salts of the present invention, the divalent and trivalent iron salts are dissolved in water to form an aqueous solution, and the aqueous solution is added to the plants mentioned above. A method is applied in which the aqueous solution is immersed in the plant or the aqueous solution is sprinkled on the plant.

The concentration of the divalent and trivalent iron salt in the aqueous solution is usually about 1 to 10.

[Action/Effect]

In the nine seeds, nine potato bulbs, cuttings, etc. treated by the method of the present invention, the transfer of stored components to utilized components in the plants is promoted, and as a result, the germination rate and survival rate are improved, and the seedlings after germination are It is resistant to disease and disease, and improves its fertilizing ability, which significantly promotes growth. Therefore, according to the treatment method of the present invention, the yield is significantly improved.

〔Example〕

Example 9 will be described below to explain the present invention more specifically.

Example 1. (Production of F・2”5・XH2O treatment liquid) 1
g Cl k ferrous acid Fe504HO 12NHC15
Pour into m7J, stir and remove insoluble components with interleaf paper (i5c)
filter. A portion of the solution is sampled, concentrated under reduced pressure, and dried in a desiccator. 1 to the obtained dry powder
Add 0 ml of isopropanol 80ml 1% aqueous solution, collect the eluted components, concentrate under reduced pressure to remove the solvent, and dry.

Crystals are obtained by repeating the above extraction-concentration-drying operation several times.

A 5% by weight aqueous solution of the crystals was prepared, and 0.01 ml of it was poured into paper chromatography paper NQ51A (zmx40c
II) spot on the inside of 8t11 from the bottom edge, and
-Upward development is carried out at 20° C. for 15 hours using a mixture of butanol:acetic acid:water=5:1:4 volume ratio as a developing solvent. After the development, the paper was dried and then a 1% by weight potassium ferricyanide aqueous solution was used as a coloring reagent to spray the interleaving paper for color development, and it was confirmed that the development position of the crystal was the l spot, Rr=o, o7. .

A similar paper chromatography test was then carried out on FeC4.
When the test was carried out on a 1=1 equivalent mixture of
FeCJ) and Rr=o, 86 (FeCl8)
It made me vomit.

The above paper chromatography test confirmed that the crystals were not a mixture but a single compound.

Next, 0.1 g of the crystals was dissolved in distilled water and 100 m7
Prepare a testable solution as I. Part 2. ．． 5ml to 50ml
2.5 ml of 0.1% by weight aqueous orthophenanthroline solution and 15 ml of sodium acetate-acetic acid buffer (pH 4,5) were added to the flask, and the flask was filled up to the marked line with distilled water. After allowing it to stand at room temperature for 80 minutes, absorbance is measured using FIIOnm. The amount of valent iron in the testable solution is determined from the Sakura quasi-curve obtained in the same manner for the FeCl aqueous solution and is 0.0.
19 g/l 00m7! Met.

Next, in the above operation, when the testable liquid was added to the volumetric flask, 1. omJ is added to reduce trivalent iron to divalent iron.

The divalent iron lid obtained in this case is 0.088g/100m
It was J. Therefore, trivalent steel frame no. 088 g/
100mN-0,019g/l 00m7! =Q, 91
It was found that divalent iron and trivalent iron were equidistantly contained in the crystal.

Through the above tests, it was determined that the crystal was Ps2CJ, 20. The crystals were dissolved in distilled water to form F'
52C15・XH2O 10P! 'Prepare the treatment solution.

Example 2 (Treatment of paddy rice seeds) Rice seeds were immersed in the treatment solution prepared in Example at room temperature for 8 hours, then washed with water and soaked in water for 8 days to pre-absorb water, and then placed in a seedling box. Sowed. Observe germination rate and growth pattern after sowing.

The results are shown in Table 1. Table 1 also shows the results of planting the paddy rice seedlings thus obtained in Honda rice fields and cultivating them conventionally.

This is the index of the treated plot when the untreated plot is set as 100 for the value in the seedling naorifuko 7 days after sowing.

According to Table 1, the germination rate of treated rice seeds was higher than that of untreated rice seeds, the growth rate was significantly better, and there was a noticeable difference in yield.

Example 8. (Treatment of various plant seeds) Okra, sweet corn,
Kapocha, green beans, and daikon radish.

Spinach, burdock, radish, green pepper, and citrus cucumber were treated in the same manner as in Example] and the results are shown in Table 2. The numerical values shown in Table 2 are the average values of 80 individuals.

As shown in Table 2, the contents in the box are the indexes of the treated plots when the untreated plots are set as 100.

According to Table 2, it is clear that regardless of the type of seeds, the treated plots show significantly better growth than the untreated plots.

Example 4. (Treatment of potato seeds) Potato seeds were immersed in the treatment solution prepared in Example 1 at room temperature for 8 hours, then washed with water and placed in a beaker lined with water-impregnated filter paper to ensure germination. The growth status was observed.

Table 8 shows the observation results after 18 days.

Number of roots Number of stems Lengthening of stems (numbers) (numbers) (1) Untreated area 16.5 (100) 1.6 (100)
2.5 (100) treatment area 40.5 (245)
2.7 (169) 8.4 (186) Table 8 The values in Table 8 are the average values of 20 individuals.

According to Table 8, the growth in the treated plots is more remarkable than in the non-treated plots.

Example 5. (Treatment of Te, -lip bulbs) Chi + IJ Hupu bulbs were immersed in the treatment solution prepared in Example 1 at room temperature for 8 hours, then washed with water, hydroponically grown, and the growth status observed after 065 days. are shown in Table 4.

Untreated area 25 (100) 8.2 (100)
2.8 (100) treatment area 74 (296) 17
．． 6 (215) 4.0 (174) As shown in Table 4, this is the index of the treated area when the untreated area in the fuco is set as 100.

The values in Table 4 are the average values of 20 individuals.

According to Table 4, the growth in the treated plots is more remarkable than in the non-treated plots.

Example 5. (Treatment of cedar cuttings) The cut end of a cedar cutting was soaked in the treatment solution prepared in Example 1 for 30 minutes at room temperature.
After soaking for a minute, it was washed with water and the Kanuma soil was measured.

The survival rate was 82% in the untreated plot, while the survival rate in the treated plot I
The result was a remarkable improvement of r158%.

Claims (1)

[Claims] A method for treating plants, which comprises bringing the plants into contact with divalent and trivalent iron salts.