JP2003052247A - Material for controlling plant growth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant growth-controlling material that can control the growth of plants suitably in many cases, because there are problems such that, although various kings of organic and inorganic compounds other than agrochemicals are employed for controlling plant growth and the plant growth requires various kinds of treatments, and in some cases they conflicts with each other, for example, growth promotion or suppression, germination suppression, green manure effect, for example, chlorophyll increase or green retention, soil acidity adjustment, increase in sugar content, fertilizer effect causing taste improvement, disease prevention, and the like, for a wide range of plants, for example, edible and inedible crop plants, fruit trees, flowers, flower trees, forest trees. SOLUTION: The objective plant growth-controlling material mainly comprises plaster and iron oxide in addition to titanium oxide. The material is applied to farm field or mixed with the soil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant growth regulating material, a growth regulating method, and a granular soil containing the material, and regulates the growth by applying a material containing a mixture of certain inorganic compounds to the plant. Regarding things.

[0002]

2. Description of the Related Art Conventionally, in order to promote or suppress the growth of plants such as edible or non-edible crops, fruit trees, flowers, flowers and trees, and to suppress germination, various organic substances other than pesticides, Inorganic compounds have been applied. For example, wood vinegar is applied to sterilize and kill plants, to grow healthy plants, to improve soil, and natural gypsum is also used to promote plant leaf greenness and promote or suppress growth.

[0003]

SUMMARY OF THE INVENTION However, there are a wide variety of target plants, and in addition to the effects of controlling the growth of plants, such as promoting growth, suppressing growth and suppressing germination, foliage enhancement and green Suitable for plants because it has a wide variety of green fertilizer effects such as retention and freshness retention, acidity correction, sugar content increase, coloring promotion, ripening rate, taste improvement, fertilizer effect such as disease prevention, and plant height control effect. Materials for growth control are sought after.

[0004]

The present inventors have found that when a mixture of certain inorganic compounds is applied to plants, a growth controlling effect is obtained.

That is, the present invention relates to a plant growth regulating material characterized by containing plaster and iron oxide as main components and titanium oxide, or applying the above-mentioned material to a field or mixing with soil. The present invention relates to a characteristic method for controlling plant growth. The present invention also relates to a granular soil containing the above-mentioned growth regulating material.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The above-mentioned material for growth regulation according to the present invention is, in general, waste sulfuric acid containing iron components discharged in the process of producing titanium oxide by the sulfuric acid method, the acid washing process of steel materials, etc. It is produced as a by-product by neutralizing with a alkali containing a calcium component, oxidizing treatment, and classifying, but is not limited to such a by-product, for example, a material containing two components among the three components may be You may mix and manufacture one component. When the above-mentioned material for growth control is a by-product of titanium dioxide by the sulfuric acid method, gypsum is usually used as CaSO ₄ .2H ₂ O.
20 to 50%, iron oxide as Fe ₂ O ₃ 20 to 60%
%, Titanium oxide is contained as TiO _{2 in an amount} of 1 to 15%,
It can be used directly or can be used after adjusting the contents of the three components as appropriate, and in this case, by-products can be effectively used. The iron oxide and titanium oxide referred to in the present invention include not only ordinary oxides of iron and titanium, but also hydroxides, hydrates, and hydrates thereof.

The material according to the present invention can exert a growth regulating effect such as a growth promoting effect and a growth suppressing effect on plants. Examples of the growth-promoting effect include growth-promoting effects such as plant foliage enhancement, plant height / stem and leaf elongation, and weight increase, ripening ratio, taste improvement, acidity correction, sugar content increase, freshness retention, disease prevention, etc. The effects are included. In addition, as a growth inhibitory effect, lodging is reduced (prevention) by controlling the plant height.
The effects are included. These growth-regulating effects are observed for any type of plant, and examples of plants include rice, cereals such as wheat and beans, vegetables, flowers / flower trees, fruit trees,
Tobacco, lawn, plants including edible or non-edible crops such as grass are mentioned, for example, paddy rice, flower / flower trees, fruit trees, lawn and other growth promoting effects, growth suppressing effects such as plant height suppression,
Leafy vegetables such as Chinese cabbage, cabbage, spinach, fruit vegetables such as cucumber and tomato, potatoes such as sweet potatoes and potatoes, growth promoting effects such as leaf green enhancement, increase in weight of foliage and roots such as rice, cucumber, rice, etc. A more preferable effect is a growth promoting effect such as an increase in the number of divisions, and further a growth promoting effect on tobacco, lawn, grass and the like.

In the present invention, the powder or granules of the above-mentioned growth controlling material may be directly applied to the growing field or the growing part of the plant, but a dispersion liquid in which the material is previously dispersed in water is applied. Or pre-load these with sand, soil,
It may be applied after being mixed with a solid substance such as a soil improving material, fertilizer, etc., for example, before sowing of plants or before transplanting of seedlings, powder or granules of the material in the field, powder or the growth control. A dispersion liquid obtained by previously dispersing materials for use in water and these solid substances may be mixed and applied, or they may be applied in the vicinity of a plant growth site. It is also possible to apply them to the soil for raising seedlings of plants and mix them uniformly with the soil.

The amount of the growth regulating material used in the present invention varies depending on the desired growth regulating effect, plant type, growth site, growth period, material composition, type of subcomponent, addition amount thereof, and the like. Although it cannot be specified unconditionally, in general, if the application conditions are the same, a higher application rate tends to obtain a growth inhibitory effect on plants, and a lower application rate tends to obtain a growth promoting effect. In this case, it is preferable to conduct a test in advance according to the purpose of application and application conditions to determine an appropriate application amount.

For example, as seen from the test examples described later, gypsum is 20 to 50% as CaSO ₄ .2H ₂ O, iron oxide is 20 to 60% as Fe ₂ O ₃ , and titanium oxide is 1 to 15 as TiO _2. %
When the contained plant growth regulating material according to the present invention is mixed in the soil for raising seedlings, for example, 32 g of the above-mentioned material is added per 1 kg of soil.
When tomato, cucumber and Chinese cabbage are cultivated by applying ~ 333 g, the effect of enhancing leaf green is obtained, but in tomato and cucumber, growth suppressing effects such as suppression of plant height and suppression of fresh weight are obtained. Similarly, when rice is cultivated in the same manner, the effect of promoting leaf greenness is similarly obtained, and the effect of suppressing growth such as suppression of plant height is also obtained. However, for the same rice cultivation, the application rate of the material overlaps with the application rate of 12.5 to
Even if it is in the range of 50 g, by adjusting the pH of the soil or adding subcomponents, it is possible to obtain a growth promoting effect such as plant length extension, leaf stem weight increase, or leaf green enhancement. it can.

Further, when the above-mentioned material for controlling growth is applied to a field, when 4 to 20 kg per are are cultivated and tomatoes are cultivated, the growth promoting effect of plant height extension is obtained. However, even if it is the same tomato, due to the difference in cultivar or growing time, when 8 to 12 kg per are are applied, which overlaps with the above-mentioned application rate, the effect of promoting leaf greenness, elongation of plant height, increase of fresh fruit weight, etc. The growth promotion effect of is obtained. Similarly, when cucumber is cultivated by applying 4 to 20 kg per are, growth promotion effects such as plant height extension and root weight increase are obtained, and when rice is cultivated, 4 to 40 k per are.
The application of g has the effect of promoting leaf greenness and growth promoting effects such as plant height extension, increase in fresh weight of foliage and roots, and increase in number of divisions. Further, when spinach or potato is cultivated by applying 8 to 16 to 20 kg per are, the leaf green promotion effect and the growth promotion effect such as an increase in fresh weight and an increase in yield can be obtained.

As described above, it is preferable to conduct a test in advance to confirm that the desired growth-regulating effect can be obtained. Generally, however, when the above-mentioned growth-regulating material is mixed in the soil for raising seedlings, , For example, 0.1 to 1,000 per kg of soil
g, preferably 20 to 250 g, a growth inhibitory effect such as germination inhibition, plant height inhibition is obtained, and 0.1 to 20 g, preferably
When 0.2 to 4 g is applied, the effect of enhancing leaf greenness and the effect of promoting growth such as elongation of plant height can be obtained. Further, when the above-mentioned growth controlling material is applied to a field, for example, 10 are per 1 are in a field.
~ 100kg, preferably 20 ~ 100kg, 30 per 1 are in paddy field
~ 100kg, preferably 40 ~ 100kg, the effect of growth control such as plant height control can be obtained, 1 ~ 12kg per field are,
Application of 4 to 12 kg, preferably 1 to 30 kg per areal in paddy field, and preferably 8 to 30 kg, to obtain the effects of growth of plant height, enhancement of leaf greenness, and increase in number of divisions, increase in yield and the like. These application rates depend on the type of plant, variety,
The desired effects may be obtained by appropriately selecting from the range according to various conditions such as the growth condition or soil conditions, the type of subcomponents, and the blending amount thereof.

Further, the material of the present invention is applied to reducing soil such as paddy fields and fields to fix substances harmful to plant growth such as hydrogen sulfide in the reducing soil to maintain healthy plant growth. Alternatively, the plant growth can be regulated by supplementing the plant with mineral nutrients such as calcium and iron.
In this case, for example, 50 to 300k per 10 ares of the applied field
g It is desirable to apply and mix with soil. Furthermore, since the above-mentioned growth regulating material is poorly water-permeable, it can be used as blade soil for levee and riparian roads in rice fields. For example, 0.5 to 10 tons per 10 ares of paddy field can be used to prevent water leakage in paddy fields. You can also

Next, the present invention is a granular soil containing the above-mentioned material for controlling growth. As described above, the material for growth control can be used in various properties such as powder, liquid, and paste, but the granular soil of the present invention is
The workability during application is even better. The shape thereof is not particularly limited, such as spherical shape, pellet shape, flake shape, and amorphous shape, and can be appropriately selected depending on the application method. Although the preferable particle diameter varies depending on the particle shape, for example, if the average particle diameter is in the range of 1 to 10 mm if it is spherical, it is advantageous to obtain the desired effect, and if it is pellet, the average major axis diameter is It is preferable that the axial ratio is 1 to 10 mm and the axial ratio is 0.5 to 2.

Generally, an agricultural material containing soil as a main component is called a soil, but the granular soil of the present invention may contain only the growth regulating material as a component, or the growth regulating material. In addition to the above, if necessary, soil, soil improving materials, subcomponents for soil cultivation such as fertilizers may be contained, and these may be used alone or in combination of two or more. Specifically, as soil, for example, mountain soil, river sand, debris soil,
Black soil and the like, as soil improving materials, for example, perlite, vermiculite, zeolite, bentonite,
Examples of fertilizers include peat, bark compost, and charcoal. Organic fertilizers such as compost, dried livestock manure, vegetable oil debris, and fish debris, and nitrogen-based materials such as ammonium sulfate, lime nitrogen, urea, ammonium nitrate, and ammonium chloride. , Phosphoric acid-based materials such as lime superphosphate, lime-hyperphosphate, fused phosphorus fertilizer, potassium-based materials such as potassium sulphate and potassium chloride, and magnesium-based materials such as magnesium sulfate and magnesium hydroxide,
Examples include inorganic fertilizers such as silicic acid-based materials such as blast furnace slag, lime-based materials such as quick lime and calcium carbonate. The content of these soil and sub-ingredients for cultivating soil varies depending on the type of plant to be applied and the nature of the soil, but it is generally sufficient if the total amount is 1 to 40% by weight in the granular cultivating soil. .

The granular soil of the present invention may be prepared, for example, by previously mixing the growth regulating material with a wetting agent such as water or alcohol, or by molding and drying while mixing the growth regulating material with a wetting agent. It can be manufactured by sizing, classifying and sieving according to the above. The growth regulating material contains gypsum as one of the main components, and this acts as a binder, so that it is not necessary to add a binder. However, an inorganic substance such as bentonite or kaolin or an organic substance such as polyvinyl alcohol, cellulose or lignin may be appropriately added for the purpose of improving moldability and adjusting hardness. In the case of adding subcomponents for soil and cultivating soil, it may be molded after mixing the growth regulating material and subcomponents for soil and cultivating soil, or may be molded while mixing, or after molding of the growth regulating material or After drying, the soil and sub-ingredients for soil may be mixed.

The molding machine used in the present invention is appropriately selected depending on the desired particle shape, but it is an extrusion molding machine such as a basket type or dome type screen type or a rotary die type, and a compression molding type such as a roll type or a tablet type. A machine, a rotary pan type, a rolling type molding machine such as a rotary drum type, an agitator such as a mixer, a fluidized bed type granulator, and the like can be used. For example, by changing the size of the openings of the screen type extruder, the spherical particle diameter and the pellet-shaped shaft diameter can be appropriately set. The pellets may be extruded, sized, and cut into a desired axial length. Similarly, pellets shaped to have an axial ratio of about 1 may be sized to give desired spherical particles. When mixing the growth regulating material and the wetting agent, auxiliary components for soil, etc. before molding, for example, a uniaxial or biaxial screw type kneader, a roller type kneader, a kneader type kneader, a high speed mixer, etc. It is preferable to use a kneader, because uniform mixing is possible. A known fluid dryer, band dryer, rotary kiln, or the like may be used for drying, and if the wetting agent is water, 80 to 15
It is preferred to dry at a temperature in the range of 0 ° C.

Since the by-product of the titanium oxide by the sulfuric acid method usually contains water in the range of 30 to 60% by weight, if it is used without removing it, it is not necessary to use a wetting agent during molding. If the water content is out of the above range, the desired effect cannot be obtained, and if the water content is more than 60% by weight, a fluidized state is formed and molding becomes extremely difficult. Therefore, adjustment is performed by operations such as drying and dehydration. Further, since the by-product exhibits neutral to weakly alkaline, when the by-product is applied to a plant suitable for acidic soil, the pH of the by-product is adjusted to a weakly acidic region by using sulfuric acid, hydrochloric acid or the like, preferably at pH 5. Adjust to a range of 0.0 to 7.0 and then form into granular soil. Alternatively, a solid acidic substance such as iron sulfate or magnesium sulfate may be added in the step of forming the granular soil or after the forming.
The amount of solid acidic substance contained in the granular soil is 0.1 to 5
A weight% range is preferred.

[0019]

EXAMPLES Next, examples according to the present invention will be described.

Example 1 A plant growth regulating material (not dried, containing 40 to 50% by weight of water) shown in Table 1 below was extruded from a screen having an opening of 3 mmφ using a bucket type extrusion screen molding machine. After sieving, sieving, sieving, and 95 using a fluid dryer
After drying at 30 ° C. for 30 minutes, a pellet-shaped granular soil of the present invention having an axial length of about 3 mm and an axial ratio of about 1 was obtained. (Sample A)

[0021]

[Table 1]

Example 2 The pH of a plant growth regulating material was adjusted to 5.5 in advance by using sulfuric acid.
The granular soil of the present invention was obtained in the same manner as in Example 1 except that the pH was adjusted to 6.0. (Sample B)

Example 3 A material for controlling plant growth and 5% by weight of ferrous sulfate (heptahydrate) as a pH adjuster were kneaded using a kneader type kneader, and then molded in the same manner as in Example 1. The granulated soil of the present invention was obtained by sieving, sieving, sieving, and drying at 90 ° C. for 60 minutes using a band dryer. (Sample C)

Example 4 A granular soil of the present invention was obtained in the same manner as in Example 3 except that 3% by weight of dry powdered chicken manure was added as fertilizer in place of ferrous sulfate (heptahydrate). (Sample D)

Example 5 The pH of the plant growth regulating material was previously adjusted to 5.5 to 6.0 by using sulfuric acid instead of ferrous sulfate (heptahydrate), and 3% by weight of fully-ripened compost and ammonium sulfate were used as fertilizers. A granular soil of the present invention was obtained in the same manner as in Example 3 except that 0.15% by weight, lime superphosphate 0.2% by weight, potassium sulfate 0.05% by weight, and polyvinyl alcohol 2% by weight as a binder were added. It was (Sample E)

Example 6 The granular soil of the present invention was obtained by mixing 2% by weight of peat moss (peat), 1% by weight of vermiculite and 1% by weight of zeolite as a soil improving material with the granular soil of Example 3.
(Sample F)

Test Example 1 In a greenhouse, a trial product was grown in a polyethylene cup filled with field soil, and 20 days after, the growth condition of the crop was investigated. The test conditions, survey methods and test results are described below. 1) Test conditions (1) Prototype: Tomato (variety: Momotaro) seedling (3 cm cotyledon seedling), Cucumber (variety: Hokushin) seedling (3 cm cotyledon seedling): Transplant (1 seedling / pot) Chinese cabbage (variety: Musou) , Rice (variety: Nihonbare): Seeding (3 seeds / pot) (2) Test scale: 8 cm diameter polyethylene cup (soil capacity: 200 g), 1 section 12 seedlings (3) Soil preparation: Field soil (paddy soil and sand And a sample A obtained in Example 1 were uniformly mixed in the following ratio (weight ratio). In this test, since the application amount was small, it was necessary to mix uniformly, so Sample A was used after being crushed.・ Mixing ratio: 7.5: 2.5 (1/4), 8.75: 1.25 (1/8), 9.17: 0.83 (1/12), 9.37: 0.63 (1/1 6), 9.58: 0.42 (1/24), 9.69: 0.31 (1/32) ・ Target area: Field soil and kargen (manufactured by Yoshino Gypsum Co., Ltd .: natural gypsum 93.6%) were uniformly mixed at a compounding ratio (weight ratio) of 9.8: 0.2. -Untreated plot: Only field soil was used. 2) Investigation method (1) Test sample: ・ The germination rate, plant height, fresh weight, and chlorophyll meter (SPAD-502 manufactured by Minolta Co., Ltd.) were measured.・ Each measurement site of plant height: tomato, cucumber ... Length from the ground to the growth point Chinese cabbage ... Length of the leaf from the growth point to the maximum leaf rice ... Length from the ground to the leaf tip 3) Test result (1 ) It described in Tables 2-5.

[0028]

[Table 2] Table 2 * ¹ : Soil pH: Measured by diluting 10 g of soil with 25 times water.

[0029]

[Table 3] Table 3

[0030]

[Table 4] Table 4

[0031]

[Table 5] Table 5

Test Example 2 In a greenhouse, rice seedlings were sown in a nursery box filled with field soil, and about three weeks after the seedlings were grown, the growth status of the paddy rice was investigated. The test conditions, survey methods and test results are described below. 1) Test conditions (1) Prototype: Rice (variety: Nipponbare) (2) Test scale: 1 ward 1/4 seedling box, 3 stations (3) Soil preparation: Paddy soil (passes through 6 mesh sieve) Used in the following amounts: Amount of soil: 0.7 kg of floor soil, 0.3 kg of soil cover (1/4 box): 2.8 kg of floor soil, 1.2 kg of soil cover per box ・ Sample A obtained in Example 1 was added in the same manner as in Test Example 1 above. Soil 50, 100, 150, 200 g / box ・ Control group: Soil added with the carbene used in Test Example 1 Cargen 30 g / box ・ Untreated group: Only paddy soil was used. Sandset addition amount (g / box) pH immediately after soil adjustment: 50… 6.9 60 100… 7.2 100 150… 7.4 150 200… 7.5 200 Calcene… 6.1 20 No additive soil… 6.5 24 * Each soil pH is It was adjusted to around 5.0 by Nissan Chemical Co., Ltd.). (4) Seeding amount: 150 ml / box equivalent (5) Fertilization conditions: Fertilizer was added to the soil to be 1.0-2.4-2.0 (g) / box (cover soil is fertilizer-free). 2) Survey method (1) Paddy rice: Presence or absence of rooting, plant height, fresh weight and chlorophyll meter
The measurement was performed using ( SPAD-502 manufactured by Minolta Co., Ltd.). The plant height and fresh weight were investigated for 20 arbitrary strains, and the chlorophyll was measured for 5 arbitrary strains at the center of the second leaf using a chlorophyll meter. 3) Test results (1) The results are shown in Table 6.

[0033]

[Table 6] Table 6

Test Example 3 In a greenhouse, a test sample was grown in a No. 6 plastic pot filled with soil mainly consisting of mountain soil, and 50 days after, the growth condition of the crop was investigated. The test conditions, survey methods and test results are described below. 1) Test conditions (1) Prototype: Tomato (variety: Momotaro) seedling (3 cm cotyledon seedling) after 50 days: 7 leaf stage Cucumber (variety: Hokushin) seedling (3 cm cotyledon seedling) after 50 days: 6 leaf stage: Transplantation (1 seedling / pot) (2) Test scale: No. 6 plastic pot (equivalent to 1 / 10,000a pot) (soil 2kg / pot), 1 ward 10 seedlings (3) Soil preparation: Mountain soil 2: Paddy soil 1: Mix at a ratio of Green Power 1 and 0.5g of chemical fertilizer 14-14-10 (Chiyoda Kasei Co., Ltd.) in nitrogen amount.
/ kg soil was adjusted. Example 1 in this conditioned soil
The sample A obtained in 1. was mixed in the same manner as in Test Example 1 in the following proportions.・ Mixing amount: 40,80,120,160,200,400kg / 10a ・ Target area: Cargen (manufactured by Yoshino Gypsum Co.
Natural gypsum (93.6%) was mixed in an amount of 60 kg / 10a and mixed uniformly.・ Non-use area: Mountain soil, paddy soil (steam sterilized soil): 5 mm net shaking soil 2) Survey method ・ Any 5 ports plant height, fresh weight (all stocks) and chlorophyll meter (SPAD-502 manufactured by Minolta) Was measured. -Each measurement site of plant height: tomato, cucumber ... Length from the ground to the growing point 3) Test results (1) See Tables 7-8.

[0035]

[Table 7] Table 7

[0036]

[Table 8] Table 8

Test Example 4 In a greenhouse, paddy rice was transplanted to a 1 / 5,000a tunnel pot filled with paddy soil, and 40 days after growing, the growth status of the paddy rice was investigated. The test conditions, survey methods and test results are described below. 1) Test conditions (1) Prototype: Rice (cultivar: Nipponbare) 2.5 leaf stage seedlings (2) Test scale: 1 pot 1 seedling transplant, 3 continuous (3) Soil preparation: paddy soil (steam sterilized paddy soil) The sample A obtained in Example 1 was mixed with 3 kg in the same manner as in Test Example 1 in the following amounts. The chemical fertilizer 14-14-14 (manufactured by Chiyoda Kasei Co., Ltd.) was applied in an amount of 30 kg / 10a, and the seedlings were scraped and the 2.5 leaf stage seedlings were transplanted.・ Mixing amount: 40,80,120,160,200,400kg / 10a (each pH is 6.4,
6.5,6.4,6.4,6.5,6.6) ・ Target area: Cargen (manufactured by Yoshino Gypsum Co., Ltd.)
Natural gypsum (93.6%) was mixed in an amount of 60 kg / 10a and mixed uniformly.
(pH 6.3) -Untreated area: The above-mentioned adjusted soil to which no chemical fertilizer was added was used. 2) Survey method ・ Height, fresh weight, number of divisions, and chlorophyll meter were used for measurement. For the chlorophyll, the chlorophyll meter (SPAD-502 manufactured by Minolta Co., Ltd.) was used to measure the center of the fifth leaf at any three points, and the average value was obtained. 3) Test results (1) See Table 9.

[0038]

[Table 9] Table 9

Test Example 5 Tomatoes were cultivated in a field in a soil mixed with a predetermined amount of materials as described below, and the yields of leaf greens and fruits were investigated. 1) Test conditions (1) Prototype: Tomato (rice longevity) seedling (5 cm2 leaf stage seedling) (2) Test scale: 1 section 2.5 × 0.8 (m); 2.0 m ² , 1 section 7
Seedlings, 30 cm staggered planting between plants, 2 continuous (3) Application method: Sample A 80 kg or 120 kg / 10a obtained in Example 1 and chemical fertilizer 8-6-8 obtained in the same manner as in Test Example 1.
40 kg / 10a was sprayed on the soil surface and thoroughly mixed with a rotary, and then tomato seedlings were planted. 2) Survey method-Plant height, measurement with a chlorophyll meter (SPAD-502 manufactured by Minolta) and yield were investigated. For the survey of plant height and leaf green, 50 days after planting, 5 plants in the center of the ward were measured. As for the yield, 10 fruits including actual mature fruits were collected from the central 5 strains 60 days after planting, and the fresh weight (g) was measured. 3) Test results (1) The results are shown in Table 10.

[0040]

[Table 10] Table 10

Test Example 6 Spinach was cultivated in a pot in a greenhouse using soil mixed with predetermined amounts of materials as described below, and leaf greenness and yield were investigated. 1) Test conditions (1) Prototype: spinach (try), sowing (2) Test scale: 1 / 1500a flower pot, 3 consecutive, 14
Strain planting (3) Application method: Sample A obtained in Example 1 in the same manner as in Test Example 1 was used in an amount of 80 to 200 kg / 10a and a chemical fertilizer 15-15-10.
40kg / 10a and 120kg / 10a magnesia lime on the surface of the pot soil. After mixing well, spinach seeds were sown. 2) Survey method 30 days after seeding, 10 plants were examined for chlorophyll meter (SPAD-502 manufactured by Minolta) and fresh weight (g). 3) Test results (1) The results are shown in Table 11.

[0042]

[Table 11] Table 11

Test Example 7 In the field, potatoes were cultivated on the soil mixed with a predetermined amount of materials as described below, and leaf greenness and yield were investigated. 1) Test conditions (1) Prototype: potato (variety: Norin 1) (2) Test scale: 1 section 2.5 × 0.8 (m), 2.0 m ² , 7 strains /
25 cm between the plots and the stock (3) Method of application: 80 to 160 kg / 10a of the sample A obtained in Example 1 and 40 kg of the chemical fertilizer 8-6-8 obtained in the same manner as in Test 1.
/ 10a Spray on the soil surface, mix thoroughly with a rotary,
Planted potatoes. 2) Investigation method-A measurement with a chlorophyll meter (SPAD-502 manufactured by Minolta) and a yield (g) were investigated. Leaf greens were measured 70 days after planting with respect to the three central plants of the ward. The yield was determined 90 days after planting by measuring the number of potatoes settled and the fresh weight (g) of any 5 strains. 3) Test results (1) Table 12 shows the leaf green measurement results 70 days after planting.
The results of measuring the yield 90 days after planting are shown in Table 3.

[0044]

[Table 12] Table 12

[0045]

[Table 13] Table 13 (): Number of potatoes

Test Example 8 Samples B to F obtained in Examples 2 to 6 are tested according to Test Examples 1 to 7, and the same effect as that of Sample A is obtained. p
When using the samples B, C, D and E adjusted to H, the pH of the soil is not adjusted by sand set. When using the samples D and E containing fertilizer, the fertilizer application amount is adjusted.

[0047]

INDUSTRIAL APPLICABILITY According to the present invention, by applying a material containing gypsum and iron oxide as a main component and a small amount of titanium oxide to a plant, promotion of growth such as promotion of foliage and suppression of growth of the plant , A growth control effect such as germination inhibition can be obtained. Further, the present invention is a granular soil containing the above-mentioned growth regulating material, which has the same growth regulating effect as the material of the present invention and is excellent in workability during application.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Iwa Kumazawa, the inventor             2-10-30 Fujimi, Chiyoda-ku, Tokyo Stone             Hara Techno Co., Ltd. Tokyo branch office (72) Inventor Osamu Imai             Ishibara, 2-3-1, Nishi-Shibukawa, Kusatsu City, Shiga Prefecture             Central Research Institute of Industry Co., Ltd. (72) Inventor Shuji Yoshimura             Ishibara, 2-3-1, Nishi-Shibukawa, Kusatsu City, Shiga Prefecture             Central Research Institute of Industry Co., Ltd. F term (reference) 2B022 BA02 BB01 EA01

Claims (9)

[Claims] 1. A plant growth regulating material containing gypsum and iron oxide as main components and containing titanium oxide. 2. Gypsum is 20 to 50% as CaSO ₄ .2H ₂ O, iron oxide is 20 to 60% as Fe ₂ O ₃ , and titanium oxide is TiO _2.
The plant growth regulating material according to claim 1, wherein the content is 1 to 15%. 3. A method for controlling plant growth, which comprises applying a material containing gypsum and iron oxide as main components and containing titanium oxide to a field or mixing with a soil. 4. The method for controlling plant growth according to claim 3, wherein the method for controlling plant growth is growth promotion or growth suppression of plants. 5. The material is gypsum CaSO._Four・ 2H₂20 as O
50%, iron oxide is Fe ₂O₃As 20-60% and oxidation
Tan to TiO₂The content of 1 to 15%
3. The method for controlling plant growth according to 3. 6. The material is applied to a field of 0.1 to 100 kg per are, or the material is 0.01 to 10,0 per kg of soil.
The plant growth control method according to claim 3, wherein 00 g is added and mixed with soil. 7. A granular soil containing the material for controlling plant growth according to claim 1. 8. The granular soil as claimed in claim 7, which further comprises at least one selected from the group consisting of soil, soil improving materials and fertilizers. 9. A method for producing a granular soil, which comprises molding the plant growth regulating material according to claim 1 and drying it.