JP3486726B2 - Granulated coated seed and method for producing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a granulated coated seed, in particular, a granulated coated seed obtained by granulating and coating a light-seeding seed such as a flower seed, and a method for producing the same.

[0002]

2. Description of the Related Art In general, aerobic seeds such as flower seeds require light for germination, so that they are easy to receive by arranging them on the ground surface without burying them in the soil at the time of sowing. is doing.

Conventionally, for such aerobic seeds,
For the purpose of rationalization, etc., granulation coating is used to cover the seed with a granulating material such as red clay or clay.However, with conventional granulated coated seed, it is difficult to absorb water at the time of sowing and However, there is a problem that the coating layer does not crack well. That is, in the conventional one, if the coating layer hardly cracks even if it absorbs water,
Since the width of the seeds is narrow even if they enter, the aerophilic seeds may not be fully exposed. Therefore, in the above-mentioned photophilic seed, there is a problem that light is blocked and good germination is inhibited.

Therefore, in view of the above problems, the present invention provides a granulated coated seed which is granulated and coated with light-sensitive seeds, which easily absorbs water during seeding and is easily cracked by water absorption, and a method for producing the same. With the goal.

[0005]

The granulated coated seed of the present invention is obtained by granulating a light-sensitive seed with a granulating composition containing a compound represented by the following general formula (1) and a granulating material. It is characterized by being grain coated.

X _0.6-1 Y _2-3 Si _n Al _4-n O ₁₀ Z ₂ (1) In the formula, X is any one of K, Na, Ca and Li, or a combination of two or more thereof. , Y is Fe ²⁺ , Fe ³⁺ , Mn, A
1, any one of Mg, V and Ti or a combination of two or more thereof, Z represents any one or a combination of two or more of OH, F and O, and n is 0 <n ≦ 4. is there.

When the granulating composition contains a compound represented by the following general formula (1), the granulated coated seed granulated and coated with this granulating composition is coated at the time of sowing. The layer is easy to absorb water, and moreover, it becomes easy to be broken by absorbing water. Therefore, the photophilic seeds are more likely to receive light and germinate well.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The matters relating to the implementation of the present invention will be described in detail below.

Examples of the compound represented by the general formula (1) include mica group. The mica group is included in the phyllosilicate mineral and has a 2: 1 type structure. And
In the above formula (1), X is an interlayer cation and Y is a cation in the octahedral sheet.

[0010] In the mica group, there are shirounmo series (dioctahedral minerals) such as shirounmo, beniunomo, sodownomo, sericite, vanadineunmo, and illite, and kurounmo series such as kurounmo, quinunmo, tetsuunmo, and chinwaldunmo (3 octahedrons). Body minerals).

A compound represented by the above general formula (1)
The content in the granulating composition is preferably 1 to 10 vol%. More preferably, it is 3 to 8 vol%. When it is more than 10 vol%, a compound grain in which two or more seeds are bound is likely to be formed at the time of granulation coating, and when it is less than 1 vol%, the above-mentioned effects in terms of water absorption and fragility. Is not enough.

The compound has an average particle size of 20 μm.
It is preferable to use the following fine powder.

The granulating composition used in the present invention contains the compound represented by the above general formula (1) and a granulating material,
Furthermore, as other components, if desired, auxiliary components such as a hydrophobic agent, a plant hormone, a plant nutrient, a plant growth regulator, a bactericide, an oxygen generator, a fertilizer and the like may be contained.

As the granulating material, the inorganic substances usually used for the purpose of granulation coating of seeds can be used as they are.
For example, diatomaceous earth, silica, red clay, clay, perlite,
Volcanic ash, volcanic rock, feldspar, talc, kaolin, clay minerals,
Bentonite, calcium carbonate, calcium hydroxide, aluminum hydroxide and the like can be used alone or in combination. It should be noted that fine powder having an average particle diameter of 20 μm or less is preferable, but it is not particularly limited.

As the hydrophobic agent, a saturated or unsaturated higher fatty acid having 14 to 22 carbon atoms, a higher alcohol, or a derivative thereof can be used. Suitable hydrophobic agents include stearic acid, metal salts of stearic acid (Na, K,
Mg, Ca, Ba salts, etc.), stearyl alcohol, alkylene oxide adducts of stearyl alcohol (ethylene oxide adducts, propylene oxide adducts, etc.) and the like. When using a hydrophobic agent, the amount used is
In order to exert the effect, the amount is preferably 1 part by weight or more, and more preferably 2 to 5 parts by weight, based on 100 parts by weight of the granulated material.

To granulate and coat light-seeding seeds using the above-described granulating composition, various known granulators such as an inclined rotary pan granulator and a fluidized bed granulator can be used. Can be used.

In the granulation coating, the powdery granulating composition is added while applying a wetting agent to the aerobic seeds to form a coating layer on the surface of the seeds. .

As the wetting agent, an aqueous solution prepared by dissolving a binder, which is a hydrophilic polymer such as polyvinyl alcohol, carboxymethylcellulose, cellulose acetate, cellulose acetate propionate, methylcellulose, pullulan, gelatin and starch, in water,
Alternatively, water can be used.

The wetting agent may contain auxiliary components of the granulating composition such as the above-mentioned plant hormones and sprayed.

The binder may be added to the composition for granulation, and water may be used as a wetting agent for granulation coating.

The aerobic seeds to be granulated and coated in the present invention refer to seeds that are difficult to germinate without light, for example, many kinds of flower seeds are applicable. Examples include betunia, eustoma, begonia, coleus, snapdragon and the like.

Many of these flower seeds are fine seeds having an average particle size of 1 mm or less, and the present invention is particularly effective for these fine photophilic seeds. In the case of fine seeds, it is preferable to reduce the average particle size of the powder of the granulating composition from the viewpoint of preventing double grains during granulation coating, but if the average particle size is reduced, the water absorption of the coating layer will decrease. Will end up. In the present invention, the inclusion of the compound represented by the general formula (1) can prevent the decrease in water absorption. When the granulating composition contains a hydrophobic agent, it is preferable to add a large amount of the above compound so as to compensate for the decrease in water absorption due to the hydrophobic agent.

[0023]

EXAMPLES Hereinafter, specific examples and effects of the present invention will be shown by examples and comparative examples, but the present invention is not limited to these examples.

Examples 1 to 4 and Comparative Examples 1 and 2 Eustoma grandiflorum seeds having a germination rate of about 95% (average grain size of 0.
(3 mm) 50 ml was put into an inclined rotary pan, the granulating composition shown in Table 1 was added while spraying the wetting agent shown in Table 1, and granulation coating was performed until the particle size became 1.5 mm. Then, it was dried at 30 ° C. for 3 hours.

In addition, the content of white peach in the composition for granulation in each example is 5 vol% in Example 1, 3 vol% in Example 2, 8 vol% in Example 3, and 1 in Example 4.
It was 5 vol%.

A germination test was carried out on the granulated coated seed thus obtained. Germination test is 9 cm
2 sheets of filter paper are laid on a φ Petri dish, 4 ml of water is poured into this, and 100 seeds with granulation coating are placed on
The test was carried out by putting it in a thermostat at 0 ° C. In addition, the same procedure was performed for naked seeds that were not granulated and coated. The results are shown in Table 1.

[0027]

[Table 1] * 1 It is the ratio (%) of the granulated coated seed in which two or more particles are bound, and was obtained by the inspection of 500 granulated coated seeds. * 2 Germination vigor is the percentage of seeds that have germinated 4 days after the start of the test. * 3 Germination rate is the rate of germinated seeds 21 days after the start of the test.

As is clear from Table 1, the granulated coated seeds of Examples 1 to 4 have many wide cracks when exposed to water, and the seeds therein are well exposed. Therefore, the germination rate and the germination rate similar to those of non-granulated seeds were obtained. On the other hand, Comparative Example 1 containing no white peach
The granulated coated seeds of No. 1 had almost no cracks even when contacted with water, and the seeds contained were not exposed enough to see the seeds inside, so the germination rate and germination rate were low, and especially the germination rate was high. It was very low.

[0029] In Example 4, since the content of the white peach was as high as 15 vol%, it was observed that double grains were generated during the granulation coating.

[0030]

INDUSTRIAL APPLICABILITY As described above, the granulated coated seed of the present invention easily absorbs water at the time of sowing and the coating layer is easily broken by water absorption, so that the aerobic seed is easily exposed to light and germination is caused by the coating layer. Will not be hindered.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Maeda 30-1 Miyamagi Minamiyama, Tanabe-cho, Tsuzuki-gun, Kyoto (56) Reference JP-A-3-277205 (JP, A) JP-A-55-68202 (JP) , A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 1/06

Claims (5)

(57) [Claims] 1. A granulated coated seed obtained by granulating and coating a light-harvesting seed with a granulating composition containing a compound represented by the following general formula (1) and a granulating material . _{X 0.6~1 Y 2~3 Si n Al 4} -n O 10 Z 2 (1) ( In the formula, X, K, Na, Ca, any one or a combination of two or more of Li, Y Is Fe ²⁺ , Fe ³⁺ , M
Any one or a combination of two or more of n, Al, Mg, V and Ti, Z is any one or a combination of two or more of OH, F and O, and n is 0 <n ≦ It is 4. ) 2. The composition for granulation is the above-mentioned general formula (1):
The granulated coated seed according to claim 1, which comprises 1 to 10 vol% of the compound represented by: The 3. A good light-seed, a compound represented by the following general formula (1), granulated material and the granulated coating seeds, characterized in that the granulating and coating in the granulating composition containing Production method. _{X 0.6~1 Y 2~3 Si n Al 4} -n O 10 Z 2 (1) ( In the formula, X, K, Na, Ca, any one or a combination of two or more of Li, Y Is Fe ²⁺ , Fe ³⁺ , M
Any one or a combination of two or more of n, Al, Mg, V and Ti, Z is any one or a combination of two or more of OH, F and O, and n is 0 <n ≦ It is 4. ) 4. The composition for granulation is the above-mentioned general formula (1).
The method for producing a granulated coated seed according to claim 3, which comprises 1 to 10 vol% of the compound represented by. 5. While applying a wetting agent to the photophilic seeds
Granulation coating by adding the composition for granulation
The granulated coated seed according to claim 3 or 4,
Manufacturing method.