WO2015146869A1 - Coating material for rice seeds and coated rice seeds - Google Patents
Coating material for rice seeds and coated rice seeds Download PDFInfo
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- WO2015146869A1 WO2015146869A1 PCT/JP2015/058638 JP2015058638W WO2015146869A1 WO 2015146869 A1 WO2015146869 A1 WO 2015146869A1 JP 2015058638 W JP2015058638 W JP 2015058638W WO 2015146869 A1 WO2015146869 A1 WO 2015146869A1
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- coating material
- coated
- rice
- rice seeds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/06—Coating or dressing seed
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
Definitions
- the object of the present invention is to provide a rice seed coating material that does not have a problem of a decrease in germination rate due to heat generation or the like and is difficult to peel off in water. It is another object of the present invention to provide a coated rice seed having a high germination rate and a material that coats the rice seed is difficult to peel off in water.
- the present inventors have found that the degree of swelling of a 2% aqueous suspension at 20 ° C. in the coating of rice seeds with iron oxide.
- the present inventors have found that the above-mentioned problems can be solved by using alpha starch (hereinafter referred to as the present alpha starch) having an A of 10 to 48 mL / g. That is, the present invention is as follows. [1] A rice seed coating material comprising iron oxide and alpha starch having a degree of swelling of 10 to 48 mL / g of a 2% aqueous suspension at 20 ° C.
- the present invention it is possible to provide a rice seed coating material that does not have a problem of a decrease in germination rate due to heat generation or the like and is difficult to peel off in water.
- iron oxide means one containing an iron oxide represented by Fe 2 O 3 as a main component.
- the iron oxide in the present invention is preferably iron oxide having a content of ⁇ -Fe 2 O 3 called hematite of 70% or more (% by weight with respect to the iron oxide).
- the content of ⁇ -Fe 2 O 3 is determined by XRD (X-ray diffraction method).
- the particle size distribution of iron oxide means a particle size distribution measured by a sieving method. A particle having a size of 150 ⁇ m or more has a particle size distribution of 40% or less.
- the particle size distribution of iron oxide is such that 10 g of iron oxide is placed on a sieve having an opening of 150 ⁇ m (standard sieve defined in JIS Z8801-1982), shaken by a screening apparatus such as a low-tap shaker, and then left on the sieve.
- the rice seed coating material of the present invention (hereinafter referred to as the present coating material) contains iron oxide, and its content is usually 84.0 to 99.5% by weight, preferably 100% by weight of the present coating material. Is in the range of 93.0 to 99.4% by weight, more preferably 93.0 to 99.0% by weight.
- the alpha starch in the present invention is also called gelatinized starch or gelatinized starch, and means a starch having a degree of pregelatinization of 90% or more.
- the degree of alpha conversion of the alpha starch is determined by an analysis method according to Customs Central Analysis Method No. 51.
- Glucoamylase solution Glucoamylase (manufactured by Wako Pure Chemical Industries, Ltd.) is dissolved using deionized water so that the titer is about 15 units per mL.
- Deproteinized solution A ZnSO 4 ⁇ 7H 2 O aqueous solution (1.8% (W / V))
- Deproteinization B solution Ba (OH) 2 ⁇ 8H 2 O solution (2.0% (W / V) )
- Glycerin standard solution 1.0 g of glycerol is fixed to 25 mL using deionized water. 2.
- test solution A uniform suspension (starch sample 1.25 g / 100 mL deionized water) was prepared, and 4.0 mL each of the suspension was placed in two 50 mL Erlenmeyer flasks, one of which was phosphate- Add 3.35 mL of citrate buffer solution to make solution I. To the other one, 0.15 mL of 10M aqueous sodium hydroxide solution was added and heated at 37 ° C. for 30 minutes to completely swell and disintegrate the starch particles. Add 1.7 mL of 1M citric acid to make solution II. Both solutions are placed in a 37 ° C.
- glucoamylase solution 2.0 mL of the glucoamylase solution is added to each solution, and the starch and glucoamylase in each solution are reacted for 120 minutes while shaking. Thereafter, the enzyme is deactivated in a boiling bath, and 5.0 mL of protein removal solution A, 5.0 mL of solution B and 1.0 mL of glycerin standard solution are added to each solution. Each of the obtained solutions is transferred to a 50 mL centrifuge tube and centrifuged at 4000 rpm for 5 minutes. The supernatant liquid is passed through a membrane filter (0.45 ⁇ m), and the obtained liquid is used as a glucose assay liquid (Ia liquid and IIa liquid). 3.
- the glucose weights of the liquids Ia and IIa are quantified with glucose CII-Test Wako (manufactured by Wako Pure Chemical Industries, Ltd.) which is a glucose kit. 4).
- Calculation of degree of alpha formation The degree of alpha formation is calculated as the ratio of the glucose weight (g) of the liquid Ia based on the glucose weight (g) of the liquid IIa as shown in the following equation.
- Degree of alpha (%) glucose weight (g) of Ia liquid / glucose weight (g) of IIa liquid ⁇ 100
- commercially available alpha starch can be used. As such commercially available alpha starch, amylox No.
- the alpha starch powdery alpha starch is preferable, and its particle size is usually 1000 ⁇ m or less, preferably 800 ⁇ m or less.
- the particle size of the alpha starch is a particle size measured by a laser diffraction / scattering particle size distribution measuring device, and indicates a particle size that is 100% in cumulative frequency in the volume-based frequency distribution.
- an agrochemical active ingredient can also be used.
- agrochemical active ingredients include insecticidal active ingredients, bactericidal active ingredients, herbicidal active ingredients, and plant growth regulating active ingredients.
- insecticidal active ingredients include clothianidin, imidacloprid, and thiamethoxam.
- bactericidal active ingredients include isothianyl and furametopyl.
- herbicidal active ingredients include imazosulfuron and bromobutide.
- An example of such a plant growth regulating active ingredient is uniconazole P.
- the pesticidal active ingredient contained in the present coating material is preferably a powdery pesticidal active ingredient, and the particle size thereof is usually 200 ⁇ m or less, preferably 100 ⁇ m or less.
- a pulverized product obtained by pulverizing the pesticidal active ingredient mixed with a solid carrier such as clay as required to a particle size of less than the above particle size by a pulverizer such as a dry pulverizer may be used. it can.
- the particle size of the pesticidal active ingredient is a particle size measured by a laser diffraction / scattering type particle size distribution measuring device, and indicates a particle size that is 100% in cumulative frequency in the volume reference frequency distribution.
- an agrochemical active ingredient is a mixture with a solid support
- the particle size of this mixture is meant.
- a laser diffraction / scattering type particle size distribution measuring apparatus for example, LA-950V2 (manufactured by Horiba, Ltd.) can be mentioned, and a method of measuring particles by dispersing particles of an agrochemical active ingredient in water using the apparatus, so-called wet type. It can be determined by measurement.
- the content of the agrochemical active ingredient in the coating material is usually 0 to 10.0% by weight, preferably 0.01 to 10.0% by weight, more preferably 0.5 to 100% by weight with respect to 100% by weight of the coating material. It is in the range of 5.5% by weight.
- the present coating material can be obtained by mixing iron oxide, the present alpha starch and, if necessary, an agrochemical active ingredient.
- this alpha starch gelatinization solution is prepared using a portion of the water sprayed during coating, and the total amount of this alpha starch gelatinization solution. After spraying, it is preferable to adjust the amount of water used in the preparation of the alpha starch gelatinization solution so that additional water can be sprayed while checking the state of the coating.
- the amount of the pesticidal active ingredient in the mixture I is such that the weight ratio of the dried rice seed to the pesticidal active ingredient is usually in the range of 20000: 1 to 20: 1, preferably 250: 1 to 30: 1. To be determined.
- the rice seeds taken out from the drum of the coating machine can be thinly spread on a plane, a plastic sheet, a seedling box, etc., and dried to obtain the coated rice seeds. it can.
- agricultural chemicals and fertilizers may be applied before sowing, simultaneously with sowing or after sowing.
- pesticides include fungicides, insecticides and herbicides.
- Formulation Example 5 70.0 parts by weight of (E) -1- (2-chloro-1,3-thiazol-5-ylmethyl) -3-methyl-2-nitroguanidine (generic name: clothianidin) and 30.0 parts by weight of wollastonite (Product name: Katsuyama Clay S, manufactured by Katsuyama Mining Co., Ltd.) was mixed and then pulverized with a centrifugal pulverizer to obtain a powdery pesticide A.
- the particle size of the powdered pesticide A obtained by wet measurement using LA-950V2 (manufactured by Horiba, Ltd.) was 68.0 ⁇ m.
- Iron oxide ⁇ -Fe 2 O 3 content 78%, particle size distribution; 150 ⁇ m or more 18.0%
- 0.1 g and powdered pesticide A 0.086 g were mixed to obtain the coating material 5 for rice seeds of the present invention.
- Formulation Example 6 70.0 parts by weight of 3.4-dichloro-N- (2-cyanophenyl) isothiazole-5-carboxamide (generic name: isothianyl) and 30.0 parts by weight of wax (trade name; Katsuyama Clay S, After mixing with Katsumiyama Co., Ltd.), the mixture was pulverized with a centrifugal pulverizer to obtain a powdery pesticide B.
- the particle size of the powdered pesticide B obtained by wet measurement using MASTERSIZER 2000 (manufactured by MALVERN) was 52.4 ⁇ m.
- Iron oxide ⁇ -Fe 2 O 3 content 78%, particle size distribution; 150 ⁇ m or more 18.0%
- 10 g, alpha starch swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% , Manufactured by Nippon Cornstarch Co., Ltd.
- 0.184 g of powdered pesticide B were mixed to obtain the coating material 6 for rice seeds of the present invention.
- Formulation Example 7 45.5 parts by weight of (RS) -5-chloro-N- (1,3-dihydro-1,1,3-trimethylisobenzofuran-4-yl) -1,3-dimethylpyrazole-4-carboxamide (general Name: Frametopil), 45.5 parts by weight of bentonite (trade name; Bentonite Hotaka, manufactured by Hojun Co., Ltd.) and 9.0 parts by weight of amorphous silicon dioxide (trade name: manufactured by Toxeal GUN, manufactured by Oriental Silica) Then, it grind
- amorphous silicon dioxide trade name: manufactured by Toxeal GUN, manufactured by Oriental Silica
- the particle size of the powdered pesticide C determined by wet measurement using MASTERSIZER 2000 (manufactured by MALVERN) was 26.3 ⁇ m.
- Iron oxide ⁇ -Fe 2 O 3 content 78%, particle size distribution; 150 ⁇ m or more 18.0%
- 10 g, alpha starch swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% , Nippon Corn Starch Co., Ltd.
- 0.1 g and powdered pesticide C0.554 g were mixed to obtain the rice seed coating material 7 of the present invention.
- Comparative formulation example 1 10 g of iron oxide ( ⁇ -Fe 2 O 3 content 78%, particle size distribution; 150 ⁇ m or more and 18.0%) 10 g and dextrin (trade name; Amicol No. 1, manufactured by Nissho Chemical Co., Ltd.) 0.1 g were mixed. A rice seed coating material 1 for comparison was obtained.
- Comparative formulation example 2 In the same manner as Comparative Formulation Example 1 except that dextrin (trade name; Akadama Dextrin ND-S, manufactured by Nissho Chemical Co., Ltd.) was used instead of dextrin (trade name; Amikol No. 1, manufactured by Nissho Chemical Co., Ltd.). Thus, a rice seed coating material 2 for comparison was obtained.
- Comparative formulation example 3 10 g of iron oxide ( ⁇ -Fe 2 O 3 content 78%, particle size distribution; 150 ⁇ m or more and 18.0%), sodium carboxymethylcellulose (trade name; Cellogen 3H, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and powder Rice seed coating material 3 for comparison was obtained by mixing 0.086 g of pesticide A.
- Comparative formulation example 4 Polyvinyl alcohol (polymerization degree: 1700, saponification degree: 98.0 to 99.0 mol%, trade name: Kuraray Poval PVA117S, Kuraray Co., Ltd.) instead of dextrin (trade name; Amicolic No.
- Comparative Formulation Example 5 Rice for comparison by mixing 7 g of iron oxide ( ⁇ -Fe 2 O 3 content 78%, particle size distribution; 150 ⁇ m or more and 18.0%) and 3 g of iron powder (trade name: DAE1K, manufactured by DOWA IP Creation Co., Ltd.) A seed coating material 5 was obtained.
- a simple seed coating machine for coating a small amount of rice seeds was prepared. As shown in FIG. 1, a 200 mL capacity polyethylene cup 2 is attached to the tip of the shaft 1 and inserted into the drive shaft of a stirrer 3 (Three-One Motor, Shinto Kagaku Co., Ltd.), so that the elevation angle is 45 degrees. Thus, the simple seed coating machine was produced by attaching the stirrer 3 to the stand 4 in an oblique manner. Water was put into a separately prepared 200 mL capacity polyethylene cup, 20 g of dried rice seeds (Hinohikari) was added thereto, and seeded at room temperature (10 ° C.) for 10 minutes.
- room temperature 10 ° C.
- the rice seeds were pulled up from the polyethylene cup, and the excess water on the surface was sucked with Kimwipe (registered trademark), and then the rice seeds were put into the polyethylene cup attached to the produced simple seed coating machine. While rotating the simple seed coating machine in the range of 130-140 rpm of the stirrer and spraying water on the surface of the rice seeds by spraying, about 10.1 g of the rice seed coating material 1 of the present invention is introduced. And then coated on rice seeds. When the fluidity of rice seeds was poor, it was rotated using a spatula. Thereafter, the same operation was repeated three times to coat all rice seed coating material 1 of the present invention. The total amount of water used for coating was 1.4 g.
- the coated rice seeds 1 of the present invention were obtained by spreading the rice seeds obtained on the stainless steel vat so as not to overlap and drying overnight.
- Production Examples 2-7 Using the rice seed coating materials 2 to 7 of the present invention, the same operations as in Production Example 1 were performed to obtain the coated rice seeds 2 to 7 of the present invention.
- Table 1 shows the input amount of the coating material and the total amount of water used for coating in each production example.
- Comparative production examples 1 to 4 The same operation as in Production Example 1 was carried out using the comparative rice seed coating materials 1 to 4 to obtain comparative coated rice seeds 1 to 4, respectively.
- Table 2 shows the input amount of the coating material and the total amount of water used for coating in each comparative production example.
- Comparative Production Example 5 Water was put into a 200 mL polyethylene cup, 20 g of dried rice seed (Hinohikari) was added thereto, and the seed was soaked at room temperature (10 ° C.) for 10 minutes. The rice seeds were pulled up from the polyethylene cup, and the excess water on the surface was sucked off with Kimwipe (registered trademark), and then the rice seeds were put into a polyethylene cup attached to a simple seed coating machine.
- the simple seed coating machine used in Production Example 1 was used. While rotating the simple seed coating machine in the range of 130-140 rpm of the stirrer and spraying water on the surface of the rice seeds by spraying, about 1/4 of the rice seed coating material 5 for comparison is put in, Rice seeds were coated.
- calcined gypsum was added and adhered to the surface of the rice seed coated with the comparative rice seed coating material 6.
- the rice seeds obtained on the stainless steel vat were spread so as not to overlap and dried overnight.
- the operation of spraying water on the surface of the rice seed three times a day was performed for 2 days, and then dried to obtain a coated rice seed 6 for comparison.
- Test example 1 Ten glass rice seeds obtained in Production Example 1 were introduced into a glass petri dish containing 50 mL of 3 degree hard water, and the presence or absence of peeling of the coating was visually observed after 30 minutes. The same test was performed on the coated rice seeds obtained in Production Examples 2 to 7 and Comparative Production Examples 1 to 5. The results are shown in Table 3.
- the present invention it is possible to provide a rice seed coating material that does not have a problem of a decrease in germination rate due to heat generation or the like and is difficult to peel off in water.
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Abstract
Description
このような問題の解決手法としては、例えば、鉄粉とともにカルボキシメチルセルローズ(CMC)や高けん化度のポリビニルアルコールを用いてイネ種子をコーティングする技術が知られている(非特許文献2、特許文献2参照)。しかしながら該技術は、水中におけるコーティング資材の剥離抑制の点でなお改善の余地がある。 Conventionally, in so-called direct sowing cultivation methods in which rice seeds are directly sown in paddy fields, a technique for suppressing floating of rice seeds by coating rice seeds with reduced iron powder and making them heavy is known (for example, non-patent literature). 1). Moreover, in order to prevent the iron powder coated with rice seeds from peeling off in water, a technique for attaching and solidifying iron powder on the surface of rice seeds by accelerating the oxidation reaction of metallic iron powder is known ( Patent Document 1). Since these conventional iron powder coating technologies utilize the solidification of oxidized reduced iron powder, it is troublesome to manage coated rice seeds, such as the need to dissipate the heat generated during oxidation, Moreover, when the management of the coated rice seed is insufficient, there is a problem that the germination rate is lowered.
As a technique for solving such a problem, for example, a technique is known in which rice seed is coated with carboxymethyl cellulose (CMC) or polyvinyl alcohol having a high saponification degree together with iron powder (Non-Patent
すなわち、本発明は以下の通りである。
[1] 酸化鉄と、2%水懸濁液の20℃における膨潤度が10~48mL/gであるアルファー澱粉と
を含むイネ種子用コーティング資材。
[2] 農薬活性成分を含む[1]記載のイネ種子用コーティング資材。
[3] 酸化鉄と、2%水懸濁液の20℃における膨潤度が10~48mL/gであるアルファー澱粉と
を含むコーティング資材によりイネ種子がコーティングされているコーティングイネ種子。
[4] 酸化鉄、2%水懸濁液の20℃における膨潤度が10~48mL/gであるアルファー澱粉、および農薬活性成分
を含むコーティング資材によりイネ種子がコーティングされているコーティングイネ種子。
[5] [3]または[4]に記載のコーティングイネ種子を直接水田に播くイネの栽培方法。
[発明の効果] As a result of investigations to find a rice seed coating material and coated rice seeds that meet such purposes, the present inventors have found that the degree of swelling of a 2% aqueous suspension at 20 ° C. in the coating of rice seeds with iron oxide. The present inventors have found that the above-mentioned problems can be solved by using alpha starch (hereinafter referred to as the present alpha starch) having an A of 10 to 48 mL / g.
That is, the present invention is as follows.
[1] A rice seed coating material comprising iron oxide and alpha starch having a degree of swelling of 10 to 48 mL / g of a 2% aqueous suspension at 20 ° C.
[2] The rice seed coating material according to [1], which contains an agrochemical active ingredient.
[3] A coated rice seed in which rice seed is coated with a coating material containing iron oxide and alpha starch having a degree of swelling of 10 to 48 mL / g of a 2% aqueous suspension at 20 ° C.
[4] Coated rice seed in which rice seed is coated with a coating material containing iron starch, alpha starch having a swelling degree of 10 to 48 mL / g at 20 ° C. in a 2% aqueous suspension, and an agrochemical active ingredient.
[5] A rice cultivation method in which the coated rice seeds according to [3] or [4] are directly sown in a paddy field.
[The invention's effect]
ふるい上残量(%)=ふるい上に残った酸化鉄の重量(g)/初めにふるいにのせた酸化鉄の重量(g)×100
本発明のイネ種子用コーティング資材(以下、本コーティング資材と記す。)は酸化鉄を含み、その含有量は本コーティング資材100重量%に対して、通常84.0~99.5重量%、好ましくは93.0~99.4重量%、より好ましくは93.0~99.0重量%の範囲である。 In the present invention, iron oxide means one containing an iron oxide represented by Fe 2 O 3 as a main component. The iron oxide in the present invention is preferably iron oxide having a content of α-Fe 2 O 3 called hematite of 70% or more (% by weight with respect to the iron oxide). In the present invention, the content of α-Fe 2 O 3 is determined by XRD (X-ray diffraction method). Moreover, it is preferable to use iron oxide in which particles having a size of 150 μm or more have a particle size distribution of 40% or less. In the present invention, the particle size distribution of iron oxide means a particle size distribution measured by a sieving method. A particle having a size of 150 μm or more has a particle size distribution of 40% or less. It indicates that the weight ratio to the whole is 40% or less. The particle size distribution of iron oxide is such that 10 g of iron oxide is placed on a sieve having an opening of 150 μm (standard sieve defined in JIS Z8801-1982), shaken by a screening apparatus such as a low-tap shaker, and then left on the sieve. The weight of the iron oxide can be measured and calculated by the following formula.
Residual amount on sieve (%) = weight of iron oxide remaining on sieve (g) / weight of iron oxide first placed on sieve (g) × 100
The rice seed coating material of the present invention (hereinafter referred to as the present coating material) contains iron oxide, and its content is usually 84.0 to 99.5% by weight, preferably 100% by weight of the present coating material. Is in the range of 93.0 to 99.4% by weight, more preferably 93.0 to 99.0% by weight.
1.試薬の調整
リン酸−クエン酸緩衝溶液(pH=4.0−5.0)
10M水酸化ナトリウム水溶液1.5mLに1Mリン酸15mL、0.1Mクエン酸17mLを加えて、pH=4.0−5.0に調整する。
グルコアミラーゼ溶液
グルコアミラーゼ(和光純薬工業株式会社製)を、力価が1mL当たり約15ユニットとなるように、脱イオン水を用いて溶解させる。
除タンパクA液
ZnSO4・7H2O水溶液(1.8%(W/V))
除タンパクB液
Ba(OH)2・8H2O水溶液(2.0%(W/V))
グリセリン標準液
グリセリン1.0gを脱イオン水を用いて25mLに定容する。
2.検液の調製
均一な懸濁液(澱粉試料1.25g/100mL脱イオン水)を作製し、その懸濁液4.0mLずつを2本の50mL三角フラスコにとり、1本には、リン酸−クエン酸緩衝溶液3.35mLを加えてI液とする。他の1本には、10M水酸化ナトリウム水溶液0.15mLを加えて、37℃で30分間加温して完全に澱粉の粒子を膨潤させて崩壊させた後に、1Mリン酸1.5mLと0.1Mクエン酸1.7mLを加えてII液とする。両液を37℃恒温槽に置き、温度を安定させた後にグルコアミラーゼ溶液2.0mLを各液に加え、振とうさせながら、各液中の澱粉とグルコアミラーゼを120分間反応させる。その後、沸騰浴中で酵素を失活させ、除たんぱくA液5.0mL、B液5.0mL及びグリセリン標準液1.0mLを各液に加える。得られた溶液をそれぞれ50mL遠沈管に移し、4000rpmで5分間遠心分離を行う。その上澄み液をメンブランフィルター(0.45μm)に通し、得られた液をグルコース定量用検液(Ia液及びIIa液)とする。
3.グルコースの定量
Ia液及びIIa液のグルコース重量を、グルコースキットであるグルコースCII−テストワコー(和光純薬工業株式会社製)にて定量する。
4.アルファー化度の算出
アルファー化度は、IIa液のグルコース重量(g)を基準としたときの、Ia液のグルコース重量(g)の割合として、次式のように算出する。
アルファー化度(%)=Ia液のグルコース重量(g)/IIa液のグルコース重量(g)×100
本発明においては市販されているアルファー澱粉を用いることができ、かかる市販されているアルファー澱粉としては、アミロックスNo.1A(日本コーンスターチ株式会社製)、コーンアルファーY(三和澱粉工業株式会社製)などが挙げられる。
本アルファー澱粉としては、粉末状のアルファー澱粉が好ましく、その粒径は通常1000μm以下、好ましくは800μm以下である。本発明においてアルファー澱粉の粒径とは、レーザー回折・散乱式の粒度分布測定装置で測定される粒径であり、体積基準頻度分布において累積頻度で100%となる粒径を指す。レーザー回折・散乱式の粒度分布測定装置としては、例えばMASTERSIZER2000(MALVERN製)が挙げられ、該装置を用いて空気中に粒子を分散させて測定する方法、所謂乾式測定により求めることができる。
本アルファー澱粉の膨潤度とは、容積法により測定される膨潤度のことである。2%水懸濁液の20℃における膨潤度とは、20℃において、水に2%のアルファー澱粉を懸濁させた懸濁液から求められるアルファー澱粉の膨潤度である。膨潤度の具体的な測定方法を以下に記す。まず、イオン交換水100mLの入った200mLビーカーに、試料2.0gを少しずつ添加し、全量投入した後、5分間室温で撹拌する。その後、100mL共栓付メスシリンダーに得られた液を移し、栓をして20℃の恒温水槽中で24時間静置し、容器内で膨潤した試料の見かけ容積を読み取ることで、膨潤度(mL/g)を算出する。本アルファー澱粉の膨潤度は、10~48mL/g、好ましくは12~46mL/gの範囲である。
本コーティング資材は本アルファー澱粉を含み、その含有量は、本コーティング資材100重量%に対して、通常0.5~6.0重量%、好ましくは1.0~4.0重量%の範囲である。また、本コーティング資材において、酸化鉄と本アルファー澱粉との重量比は通常200:1~12:1、好ましくは100:1~25:1の範囲である。 The alpha starch in the present invention is also called gelatinized starch or gelatinized starch, and means a starch having a degree of pregelatinization of 90% or more. In the present invention, the degree of alpha conversion of the alpha starch is determined by an analysis method according to Customs Central Analysis Method No. 51. The analysis method according to Customs Central Analysis Bulletin No. 51 is as follows.
1. Preparation of reagent Phosphate-citrate buffer solution (pH = 4.0-5.0)
1M phosphoric acid 15mL and 0.1M citric acid 17mL are added to 10M sodium hydroxide aqueous solution 1.5mL, and it adjusts to pH = 4.0-5.0.
Glucoamylase solution Glucoamylase (manufactured by Wako Pure Chemical Industries, Ltd.) is dissolved using deionized water so that the titer is about 15 units per mL.
Deproteinized solution A ZnSO 4 · 7H 2 O aqueous solution (1.8% (W / V))
Deproteinization B solution Ba (OH) 2 · 8H 2 O solution (2.0% (W / V) )
Glycerin standard solution 1.0 g of glycerol is fixed to 25 mL using deionized water.
2. Preparation of test solution A uniform suspension (starch sample 1.25 g / 100 mL deionized water) was prepared, and 4.0 mL each of the suspension was placed in two 50 mL Erlenmeyer flasks, one of which was phosphate- Add 3.35 mL of citrate buffer solution to make solution I. To the other one, 0.15 mL of 10M aqueous sodium hydroxide solution was added and heated at 37 ° C. for 30 minutes to completely swell and disintegrate the starch particles. Add 1.7 mL of 1M citric acid to make solution II. Both solutions are placed in a 37 ° C. thermostat, and after stabilizing the temperature, 2.0 mL of the glucoamylase solution is added to each solution, and the starch and glucoamylase in each solution are reacted for 120 minutes while shaking. Thereafter, the enzyme is deactivated in a boiling bath, and 5.0 mL of protein removal solution A, 5.0 mL of solution B and 1.0 mL of glycerin standard solution are added to each solution. Each of the obtained solutions is transferred to a 50 mL centrifuge tube and centrifuged at 4000 rpm for 5 minutes. The supernatant liquid is passed through a membrane filter (0.45 μm), and the obtained liquid is used as a glucose assay liquid (Ia liquid and IIa liquid).
3. Quantification of glucose The glucose weights of the liquids Ia and IIa are quantified with glucose CII-Test Wako (manufactured by Wako Pure Chemical Industries, Ltd.) which is a glucose kit.
4). Calculation of degree of alpha formation The degree of alpha formation is calculated as the ratio of the glucose weight (g) of the liquid Ia based on the glucose weight (g) of the liquid IIa as shown in the following equation.
Degree of alpha (%) = glucose weight (g) of Ia liquid / glucose weight (g) of IIa liquid × 100
In the present invention, commercially available alpha starch can be used. As such commercially available alpha starch, amylox No. 1A (manufactured by Nippon Corn Starch Co., Ltd.), corn alpha Y (manufactured by Sanwa Starch Co., Ltd.), and the like.
As this alpha starch, powdery alpha starch is preferable, and its particle size is usually 1000 μm or less, preferably 800 μm or less. In the present invention, the particle size of the alpha starch is a particle size measured by a laser diffraction / scattering particle size distribution measuring device, and indicates a particle size that is 100% in cumulative frequency in the volume-based frequency distribution. As a laser diffraction / scattering type particle size distribution measuring apparatus, for example, MASTERSIZER2000 (manufactured by MALVERN) can be mentioned, and the particle size distribution measuring apparatus can be obtained by a method of measuring particles dispersed in air using the apparatus, so-called dry measurement.
The degree of swelling of the present alpha starch is the degree of swelling measured by the volume method. The degree of swelling of a 2% aqueous suspension at 20 ° C. is the degree of swelling of alpha starch determined from a suspension of 2% alpha starch suspended in water at 20 ° C. A specific method for measuring the degree of swelling will be described below. First, 2.0 g of a sample is added little by little to a 200 mL beaker containing 100 mL of ion-exchanged water, and the whole amount is added, followed by stirring at room temperature for 5 minutes. Thereafter, the liquid obtained was transferred to a 100 mL stoppered measuring cylinder, stoppered, allowed to stand in a constant temperature water bath at 20 ° C. for 24 hours, and the apparent volume of the sample swollen in the container was read. mL / g) is calculated. The swelling degree of the present alpha starch is 10 to 48 mL / g, preferably 12 to 46 mL / g.
The present coating material contains the present alpha starch, and the content thereof is usually 0.5 to 6.0% by weight, preferably 1.0 to 4.0% by weight with respect to 100% by weight of the present coating material. is there. In the present coating material, the weight ratio of iron oxide to the present alpha starch is usually in the range of 200: 1 to 12: 1, preferably 100: 1 to 25: 1.
かかる殺虫活性成分としては、例えば、クロチアニジン、イミダクロプリド、チアメトキサムが挙げられる。
かかる殺菌活性成分としては、例えば、イソチアニル、フラメトピルが挙げられる。
かかる除草活性成分としては、例えば、イマゾスルフロン、ブロモブチドが挙げられる。
かかる植物生長調節活性成分としては、例えば、ウニコナゾールPが挙げられる。
本コーティング資材に含まれる農薬活性成分としては、粉状の農薬活性成分が好ましく、その粒径は、通常200μm以下、好ましくは100μm以下である。かかる農薬活性成分として、必要に応じてクレー等の固体担体と混合された農薬活性成分が、乾式粉砕機等の粉砕機により前記の粒径以下になるように粉砕された粉砕物を用いることもできる。本発明において農薬活性成分の粒径とはレーザー回折・散乱式の粒度分布測定装置で測定される粒径であり、体積基準頻度分布において累積頻度で100%となる粒径を指す。なお、農薬活性成分が固体担体との混合物である場合には、該混合物の粒径を意味する。レーザー回折・散乱式の粒度分布測定装置としては、例えばLA−950V2(株式会社堀場製作所製)が挙げられ、該装置を用いて水中に農薬活性成分の粒子を分散させて測定する方法、所謂湿式測定により求めることができる。
本コーティング資材における農薬活性成分の含有量は、本コーティング資材100重量%に対して、通常0~10.0重量%、好ましくは0.01~10.0重量%、より好ましくは0.5~5.5重量%の範囲である。 In the present invention, an agrochemical active ingredient can also be used. Examples of such agrochemical active ingredients include insecticidal active ingredients, bactericidal active ingredients, herbicidal active ingredients, and plant growth regulating active ingredients.
Examples of such insecticidal active ingredients include clothianidin, imidacloprid, and thiamethoxam.
Examples of such bactericidal active ingredients include isothianyl and furametopyl.
Examples of such herbicidal active ingredients include imazosulfuron and bromobutide.
An example of such a plant growth regulating active ingredient is uniconazole P.
The pesticidal active ingredient contained in the present coating material is preferably a powdery pesticidal active ingredient, and the particle size thereof is usually 200 μm or less, preferably 100 μm or less. As the pesticidal active ingredient, a pulverized product obtained by pulverizing the pesticidal active ingredient mixed with a solid carrier such as clay as required to a particle size of less than the above particle size by a pulverizer such as a dry pulverizer may be used. it can. In the present invention, the particle size of the pesticidal active ingredient is a particle size measured by a laser diffraction / scattering type particle size distribution measuring device, and indicates a particle size that is 100% in cumulative frequency in the volume reference frequency distribution. In addition, when an agrochemical active ingredient is a mixture with a solid support | carrier, the particle size of this mixture is meant. As a laser diffraction / scattering type particle size distribution measuring apparatus, for example, LA-950V2 (manufactured by Horiba, Ltd.) can be mentioned, and a method of measuring particles by dispersing particles of an agrochemical active ingredient in water using the apparatus, so-called wet type. It can be determined by measurement.
The content of the agrochemical active ingredient in the coating material is usually 0 to 10.0% by weight, preferably 0.01 to 10.0% by weight, more preferably 0.5 to 100% by weight with respect to 100% by weight of the coating material. It is in the range of 5.5% by weight.
酸化鉄及び農薬活性成分を含む混合物(以下、混合物Iと記す。)と本アルファー澱粉糊化液とを用いてイネ種子をコーティングする場合は、前記の方法において、本コーティング資材に替えて混合物Iを用い、噴霧する水の一部または全部を本アルファー澱粉糊化液に替えればよい。この場合、本アルファー澱粉は水に膨潤、または溶解して使用するため、粒度分布は特に制限されない。本アルファー澱粉糊化液は、水と本アルファー澱粉とを混合し、攪拌することにより得ることができる。本アルファー澱粉糊化液の調製においては、本コーティングイネ種子における酸化鉄と本アルファー澱粉との重量比が、通常200:1~10:1、好ましくは100:1~25:1の範囲になるように本アルファー澱粉の量を決定し、コーティング時に噴霧する水の一部または全部を用いて、本アルファー澱粉の濃度が、通常0.5~50重量%の範囲になるように調整する。コーティング時に噴霧する水の量が過剰になるとコーティングイネ種子同士が付着してしまうため、コーティング時に噴霧する水の一部を用いて本アルファー澱粉糊化液を調製し、本アルファー澱粉糊化液全量を噴霧した後、コーティングの状態を確認しながら追加で水を噴霧することができるように本アルファー澱粉糊化液の調製に使用する水の量を調整することが好ましい。
混合物I中の農薬活性成分量は、乾燥している状態のイネ種子と農薬活性成分との重量比が、通常20000:1~20:1、好ましくは250:1~30:1の範囲になるように決定する。 Dried rice seeds are put in a seed bag and soaked. In order to obtain coated rice seeds with a high germination rate, it is desirable to soak for 3 to 4 days at a water temperature of 15 to 20 ° C. After that, the rice seeds pulled up from the water are allowed to stand still or subjected to a dehydrator to remove excess water on the surface, and then put into a drum of a manual or automatic coating machine commonly used for seed coating. Rotate rice seeds. Next, about 1/4 to 1/3 of the total amount of the coating material to be used is put on the rice seed rotating in the drum, and water is sprayed on the mixture of the coating material and rice seed. The coating material is adhered to the surface of rice seeds by spraying. However, if the coating material adheres to the inner wall of the drum, the above operation is performed while scraping it off using a scraper or dust collector. This operation is repeated two to three times to coat the whole amount of this coating material on rice seeds. The total amount of water sprayed during coating is appropriately adjusted depending on the water content of rice seeds, but is preferably in the range of 1/10 to 1/3 with respect to the weight of iron oxide.
When rice seed is coated with a mixture containing iron oxide and an agrochemical active ingredient (hereinafter referred to as "mixture I") and the present alpha starch gelatinizing solution, the mixture I is replaced with the present coating material in the above method. And all or part of the water to be sprayed may be replaced with the alpha starch gelatinizing solution. In this case, since the present alpha starch is used after being swollen or dissolved in water, the particle size distribution is not particularly limited. The present alpha starch gelatinization solution can be obtained by mixing water and the present alpha starch and stirring. In the preparation of the present alpha starch gelatinization solution, the weight ratio of iron oxide to the present alpha starch in the present coated rice seed is usually in the range of 200: 1 to 10: 1, preferably 100: 1 to 25: 1. Thus, the amount of the present alpha starch is determined, and the concentration of the present alpha starch is usually adjusted to a range of 0.5 to 50% by weight using a part or all of the water sprayed during coating. If the amount of water sprayed during coating becomes excessive, the coated rice seeds will adhere to each other. Therefore, this alpha starch gelatinization solution is prepared using a portion of the water sprayed during coating, and the total amount of this alpha starch gelatinization solution. After spraying, it is preferable to adjust the amount of water used in the preparation of the alpha starch gelatinization solution so that additional water can be sprayed while checking the state of the coating.
The amount of the pesticidal active ingredient in the mixture I is such that the weight ratio of the dried rice seed to the pesticidal active ingredient is usually in the range of 20000: 1 to 20: 1, preferably 250: 1 to 30: 1. To be determined.
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)10g、アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、アルファー化度98%、日本コーンスターチ株式会社製)0.1gを混合して本発明のイネ種子用コーティング資材1を得た。
配合例2
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)20g、アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、アルファー化度98%、日本コーンスターチ株式会社製)0.2gを混合して本発明のイネ種子用コーティング資材2を得た。
配合例3
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)40g、アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、アルファー化度98%、日本コーンスターチ株式会社製)1.6gを混合して本発明のイネ種子用コーティング資材3を得た。
配合例4
アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、日本コーンスターチ株式会社製)に替えて、アルファー澱粉(膨潤度18.5mL/g、商品名;コーンアルファーY、アルファー化度96%、三和澱粉工業株式会社製)を用いた以外は配合例1と同様にして本発明のイネ種子用コーティング資材4を得た。
配合例5
70.0重量部の(E)−1−(2−クロロ−1,3−チアゾール−5−イルメチル)−3−メチル−2−ニトログアニジン(一般名:クロチアニジン)及び30.0重量部の蝋石(商品名;勝光山クレーS、株式会社勝光山鉱業所製)を混合した後、遠心粉砕機で粉砕して、粉状農薬Aを得た。LA−950V2(株式会社堀場製作所製)を用いて湿式測定により求めた粉状農薬Aの粒径は68.0μmであった。
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)10g、アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、アルファー化度98%、日本コーンスターチ株式会社製)0.1g及び粉状農薬A0.086gを混合して本発明のイネ種子用コーティング資材5を得た。
配合例6
70.0重量部の3.4−ジクロロ−N−(2−シアノフェニル)イソチアゾール−5−カルボキシアミド(一般名:イソチアニル)及び30.0重量部の蝋石(商品名;勝光山クレーS、株式会社勝光山鉱業所製)を混合した後、遠心粉砕機で粉砕して、粉状農薬Bを得た。MASTERSIZER2000(MALVERN製)を用いて湿式測定により求めた粉状農薬Bの粒径は52.4μmであった。
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)10g、アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、アルファー化度98%、日本コーンスターチ株式会社製)0.1g、及び粉状農薬B0.184gを混合して本発明のイネ種子用コーティング資材6を得た。
配合例7
45.5重量部の(RS)−5−クロロ−N−(1,3−ジヒドロ−1,1,3−トリメチルイソベンゾフラン−4−イル)−1,3−ジメチルピラゾール−4−カルボキサミド(一般名:フラメトピル)、45.5重量部のベントナイト(商品名;ベントナイト穂高、株式会社ホージュン製)及び9.0重量部の非晶質二酸化珪素(商品名:トクシールGUN、オリエンタルシリカ製)を混合した後、遠心粉砕機で粉砕して、粉状農薬Cを得た。MASTERSIZER2000(MALVERN製)を用いて湿式測定により求めた粉状農薬Cの粒径は26.3μmであった。
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)10g、アルファー澱粉(膨潤度15.5mL/g、商品名;アミロックスNo.1A、アルファー化度98%、日本コーンスターチ株式会社製)0.1g、及び粉状農薬C0.554gを混合して本発明のイネ種子用コーティング資材7を得た。 Formulation Example 1
Iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more 18.0%) 10 g, alpha starch (swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% (Japan Cornstarch Co., Ltd.) 0.1 g was mixed to obtain the
Formulation Example 2
Iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more 18.0%) 20 g, alpha starch (swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% (Japan Cornstarch Co., Ltd.) 0.2 g was mixed to obtain the
Formulation Example 3
Iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more 18.0%) 40 g, alpha starch (swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% 1.6 g of Nippon Corn Starch Co., Ltd.) was mixed to obtain the rice
Formulation Example 4
Alpha starch (swelling degree 18.5 mL / g, trade name; corn alpha Y, alpha degree) instead of alpha starch (swelling degree 15.5 ml / g, trade name; amylox No. 1A, manufactured by Nippon Cornstarch Co., Ltd.) The rice
Formulation Example 5
70.0 parts by weight of (E) -1- (2-chloro-1,3-thiazol-5-ylmethyl) -3-methyl-2-nitroguanidine (generic name: clothianidin) and 30.0 parts by weight of wollastonite (Product name: Katsuyama Clay S, manufactured by Katsuyama Mining Co., Ltd.) was mixed and then pulverized with a centrifugal pulverizer to obtain a powdery pesticide A. The particle size of the powdered pesticide A obtained by wet measurement using LA-950V2 (manufactured by Horiba, Ltd.) was 68.0 μm.
Iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more 18.0%) 10 g, alpha starch (swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% (Japan Cornstarch Co., Ltd.) 0.1 g and powdered pesticide A 0.086 g were mixed to obtain the coating material 5 for rice seeds of the present invention.
Formulation Example 6
70.0 parts by weight of 3.4-dichloro-N- (2-cyanophenyl) isothiazole-5-carboxamide (generic name: isothianyl) and 30.0 parts by weight of wax (trade name; Katsuyama Clay S, After mixing with Katsumiyama Co., Ltd.), the mixture was pulverized with a centrifugal pulverizer to obtain a powdery pesticide B. The particle size of the powdered pesticide B obtained by wet measurement using MASTERSIZER 2000 (manufactured by MALVERN) was 52.4 μm.
Iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more 18.0%) 10 g, alpha starch (swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% , Manufactured by Nippon Cornstarch Co., Ltd.) and 0.184 g of powdered pesticide B were mixed to obtain the coating material 6 for rice seeds of the present invention.
Formulation Example 7
45.5 parts by weight of (RS) -5-chloro-N- (1,3-dihydro-1,1,3-trimethylisobenzofuran-4-yl) -1,3-dimethylpyrazole-4-carboxamide (general Name: Frametopil), 45.5 parts by weight of bentonite (trade name; Bentonite Hotaka, manufactured by Hojun Co., Ltd.) and 9.0 parts by weight of amorphous silicon dioxide (trade name: manufactured by Toxeal GUN, manufactured by Oriental Silica) Then, it grind | pulverized with the centrifugal grinder and the powdery pesticide C was obtained. The particle size of the powdered pesticide C determined by wet measurement using MASTERSIZER 2000 (manufactured by MALVERN) was 26.3 μm.
Iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more 18.0%) 10 g, alpha starch (swelling degree 15.5 mL / g, trade name; amylox No. 1A, alpha degree 98% , Nippon Corn Starch Co., Ltd.) 0.1 g and powdered pesticide C0.554 g were mixed to obtain the rice seed coating material 7 of the present invention.
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)10g及びデキストリン(商品名;アミコールNo.1、日澱化学株式会社製)0.1gを混合して比較用のイネ種子用コーティング資材1を得た。
比較配合例2
デキストリン(商品名;アミコールNo.1、日澱化学株式会社製)に替えてデキストリン(商品名;赤玉デキストリンND−S、日澱化学株式会社製)を用いた以外は比較配合例1と同様にして比較用のイネ種子用コーティング資材2を得た。
比較配合例3
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)10g、カルボキシメチルセルロースナトリウム(商品名;セロゲン3H、第一工業製薬株式会社製)0.1g及び粉状農薬A0.086gを混合して比較用のイネ種子用コーティング資材3を得た。
比較配合例4
デキストリン(商品名;アミコールNo.1、日澱化学株式会社製)に替えてポリビニルアルコール(重合度;1700、けん化度;98.0~99.0mol%、商品名;クラレポバールPVA117S、株式会社クラレ製)を用いた以外は比較配合例1と同様にして比較用のイネ種子用コーティング資材4を得た。
比較配合例5
酸化鉄(α−Fe2O3含有量78%、粒度分布;150μm以上18.0%)7g、鉄粉(商品名;DAE1K、DOWA IPクリエイション株式会社製)3gを混合して比較用のイネ種子用コーティング資材5を得た。
比較配合例6
鉄粉(商品名;DAE1K、DOWA IPクリエイション株式会社製)10g及び焼石膏(商品名;KTS−1、吉野石膏販売株式会社製)1gを混合して比較用のイネ種子用コーティング資材6を得た。 Comparative formulation example 1
10 g of iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more and 18.0%) 10 g and dextrin (trade name; Amicol No. 1, manufactured by Nissho Chemical Co., Ltd.) 0.1 g were mixed. A rice
Comparative formulation example 2
In the same manner as Comparative Formulation Example 1 except that dextrin (trade name; Akadama Dextrin ND-S, manufactured by Nissho Chemical Co., Ltd.) was used instead of dextrin (trade name; Amikol No. 1, manufactured by Nissho Chemical Co., Ltd.). Thus, a rice
Comparative formulation example 3
10 g of iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more and 18.0%), sodium carboxymethylcellulose (trade name; Cellogen 3H, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and powder Rice
Comparative formulation example 4
Polyvinyl alcohol (polymerization degree: 1700, saponification degree: 98.0 to 99.0 mol%, trade name: Kuraray Poval PVA117S, Kuraray Co., Ltd.) instead of dextrin (trade name; Amicolic No. 1, manufactured by Nissho Chemical Co., Ltd.) A comparative rice
Comparative Formulation Example 5
Rice for comparison by mixing 7 g of iron oxide (α-Fe 2 O 3 content 78%, particle size distribution; 150 μm or more and 18.0%) and 3 g of iron powder (trade name: DAE1K, manufactured by DOWA IP Creation Co., Ltd.) A seed coating material 5 was obtained.
Comparative Formulation Example 6
Iron powder (trade name: DAE1K, manufactured by DOWA IP Creation Co., Ltd.) 10 g and calcined gypsum (trade name: KTS-1, manufactured by Yoshino Gypsum Sales Co., Ltd.) 1 g are mixed to obtain a rice seed coating material 6 for comparison. It was.
まず、少量のイネ種子にコーティングするための簡易種子コーティングマシンを作製した。図1に示すように、シャフト1の先に200mL容量のポリエチレン製カップ2を取りつけ、それを攪拌機3(スリーワンモータ、新東科学株式会社製)のドライブシャフトに挿入し、仰角が45度になるように攪拌機3を斜めにしてスタンド4に取りつけることにより、簡易種子コーティングマシンを作製した。
別に用意した200mL容量のポリエチレン製カップに水を入れ、そこへ乾燥しているイネ種子(ヒノヒカリ)20gを入れ、室温(10℃)で10分間浸種した。イネ種子をポリエチレン製カップから引き上げ、キムワイプ(登録商標)でその表面の過剰な水分を吸い取った後、作製した簡易種子コーティングマシンに取りつけられたポリエチレン製カップにそのイネ種子を投入した。簡易種子コーティングマシンを攪拌機の回転数が130~140rpmの範囲で回転させ、霧吹きで水をイネ種子表面に噴霧しながら、本発明のイネ種子用コーティング資材1 10.1gの1/4程度を投入し、イネ種子にコーティングした。イネ種子の流動性が悪い場合には、スパチュラを用いて回転させた。その後、同様の操作を3回繰り返すことにより、本発明のイネ種子用コーティング資材1を全てイネ種子にコーティングした。コーティングに使用した水の全量は1.4gであった。ステンレス鋼製バットに得られたイネ種子が重ならないよう広げ、一晩乾燥させることにより本発明のコーティングイネ種子1を得た。
製造例2~7
本発明のイネ種子用コーティング資材2~7をそれぞれ用いて製造例1と同様の操作を行い、本発明のコーティングイネ種子2~7をそれぞれ得た。なお、それぞれの製造例におけるコーティング資材の投入量及びコーティングに使用した水の全量を表1に示す。 Production Example 1
First, a simple seed coating machine for coating a small amount of rice seeds was prepared. As shown in FIG. 1, a 200 mL
Water was put into a separately prepared 200 mL capacity polyethylene cup, 20 g of dried rice seeds (Hinohikari) was added thereto, and seeded at room temperature (10 ° C.) for 10 minutes. The rice seeds were pulled up from the polyethylene cup, and the excess water on the surface was sucked with Kimwipe (registered trademark), and then the rice seeds were put into the polyethylene cup attached to the produced simple seed coating machine. While rotating the simple seed coating machine in the range of 130-140 rpm of the stirrer and spraying water on the surface of the rice seeds by spraying, about 10.1 g of the rice
Production Examples 2-7
Using the rice
比較用のイネ種子用コーティング資材1~4をそれぞれ用いて製造例1と同様の操作を行い、比較用のコーティングイネ種子1~4をそれぞれ得た。なお、それぞれの比較製造例におけるコーティング資材の投入量及びコーティングに使用した水の全量を表2に示す。 Comparative production examples 1 to 4
The same operation as in Production Example 1 was carried out using the comparative rice
200mL容量のポリエチレン製カップに水を入れ、そこへ乾燥しているイネ種子(ヒノヒカリ)20gを入れ、室温(10℃)で10分間浸種した。イネ種子をポリエチレン製カップから引き上げ、キムワイプ(登録商標)でその表面の過剰な水分を吸い取った後、簡易種子コーティングマシンに取りつけられたポリエチレン製カップにそのイネ種子を投入した。なお、簡易種子コーティングマシンは、製造例1で使用したものを使用した。簡易種子コーティングマシンを攪拌機の回転数が130~140rpmの範囲で回転させ、霧吹きで水をイネ種子表面に噴霧しながら、比較用のイネ種子用コーティング資材5 10gの1/4程度を投入し、イネ種子にコーティングした。イネ種子の流動性が悪い場合には、スパチュラを用いて回転させた。その後、同様の操作を3回繰り返すことにより、イネ種子用コーティング資材5を全て種子にコーティングした。コーティングに使用した水の全量は1.2gであった。ステンレス鋼製バットに得られたイネ種子が重ならないよう広げ、一晩乾燥させた。翌日以降、鉄の酸化を促進させるために1日に3回イネ種子表面に水を噴霧する操作を2日間行い、その後乾燥させることにより比較用のコーティングイネ種子5を得た。
比較製造例6
200mL容量のポリエチレン製カップに水を入れ、そこへ乾燥しているイネ種子(ヒノヒカリ)20gを入れ、室温(10℃)で10分間浸種した。イネ種子をポリエチレン製カップから引き上げ、キムワイプ(登録商標)でその表面の過剰な水分を吸い取った後、簡易種子コーティングマシンに取りつけられたポリエチレン製カップにイネ種子を投入した。なお、簡易種子コーティングマシンは、製造例1で使用したものを使用した。簡易種子コーティングマシンを攪拌機の回転数が130~140rpmの範囲で回転させ、霧吹きで水をイネ種子表面に噴霧しながら、イネ種子用コーティング資材6 11gの1/4程度を投入し、イネ種子にコーティングした。イネ種子の流動性が悪い場合には、スパチュラを用いて回転させた。その後、同様の操作を3回繰り返すことにより、イネ種子用コーティング資材6を全て種子にコーティングした。コーティングに使用した水の全量は3.5gであった。次に焼石膏0.5gを投入し、比較用のイネ種子用コーティング資材6でコーティングされたイネ種子の表面に付着させた。ステンレス鋼製バットに得られたイネ種子が重ならないよう広げ、一晩乾燥させた。翌日以降、鉄の酸化を促進させるために1日に3回イネ種子表面に水を噴霧する操作を2日間行い、その後乾燥させることにより比較用のコーティングイネ種子6を得た。 Comparative Production Example 5
Water was put into a 200 mL polyethylene cup, 20 g of dried rice seed (Hinohikari) was added thereto, and the seed was soaked at room temperature (10 ° C.) for 10 minutes. The rice seeds were pulled up from the polyethylene cup, and the excess water on the surface was sucked off with Kimwipe (registered trademark), and then the rice seeds were put into a polyethylene cup attached to a simple seed coating machine. The simple seed coating machine used in Production Example 1 was used. While rotating the simple seed coating machine in the range of 130-140 rpm of the stirrer and spraying water on the surface of the rice seeds by spraying, about 1/4 of the rice seed coating material 5 for comparison is put in, Rice seeds were coated. When the fluidity of rice seeds was poor, it was rotated using a spatula. Thereafter, the same operation was repeated three times to coat the seeds with the rice seed coating material 5. The total amount of water used for coating was 1.2 g. The rice seeds obtained on the stainless steel vat were spread so as not to overlap and dried overnight. From the next day, in order to promote the oxidation of iron, the operation of spraying water on the surface of the rice seed three times a day was performed for 2 days and then dried to obtain a coated rice seed 5 for comparison.
Comparative Production Example 6
Water was put into a 200 mL polyethylene cup, 20 g of dried rice seed (Hinohikari) was added thereto, and the seed was soaked at room temperature (10 ° C.) for 10 minutes. The rice seeds were pulled up from the polyethylene cup, and excess water on the surface thereof was absorbed with Kimwipe (registered trademark), and then the rice seeds were put into a polyethylene cup attached to a simple seed coating machine. The simple seed coating machine used in Production Example 1 was used. Rotate a simple seed coating machine in the range of 130 to 140 rpm, and spray water on the surface of rice seeds by spraying about 1/4 of rice seed coating material 611g. Coated. When the fluidity of rice seeds was poor, it was rotated using a spatula. Thereafter, the same operation was repeated three times to coat the seeds with the rice seed coating material 6. The total amount of water used for coating was 3.5 g. Next, 0.5 g of calcined gypsum was added and adhered to the surface of the rice seed coated with the comparative rice seed coating material 6. The rice seeds obtained on the stainless steel vat were spread so as not to overlap and dried overnight. From the next day, in order to promote the oxidation of iron, the operation of spraying water on the surface of the rice seed three times a day was performed for 2 days, and then dried to obtain a coated rice seed 6 for comparison.
3度硬水50mLを入れたガラスシャーレに、製造例1で得られたコーティングイネ種子10粒を投入し、30分後にコーティングの剥離の有無を目視により観察した。製造例2~7及び比較製造例1~5で得られたコーティングイネ種子にも、同じ試験を行った。
結果を表3に示す。 Test example 1
Ten glass rice seeds obtained in Production Example 1 were introduced into a glass petri dish containing 50 mL of 3 degree hard water, and the presence or absence of peeling of the coating was visually observed after 30 minutes. The same test was performed on the coated rice seeds obtained in Production Examples 2 to 7 and Comparative Production Examples 1 to 5.
The results are shown in Table 3.
ボールミル回転架台の回転数を100rpmに設定した。200mL容量のマヨネーズ瓶に製造例1で得られたコーティングイネ種子20gを入れてボールミル回転架台に載せ、5分間回転させた。その後、目開き1000μmのふるいを用いて振るい、ふるいを通過した剥離物の重量を計量し、以下の式により剥離率を算出した。
剥離率(%)=剥離物の重量(g)/試験前のコーティングイネ種子20gに含まれる付着物の重量(g)×100
製造例2、4~7及び比較製造例1、2、4、5で得られたコーティングイネ種子にも、同じ試験を行った。
ただし、上式における付着物とは、前記の製造例または比較製造例において用いられ、イネ種子に付着している固体の物質の全てを指し、具体的には、酸化鉄、本アルファー澱粉、農薬活性成分である。
結果を表4に示す。 Test example 2
The rotation speed of the ball mill rotary mount was set to 100 rpm. In a 200 mL mayonnaise bottle, 20 g of the coated rice seed obtained in Production Example 1 was placed, placed on a ball mill rotating rack, and rotated for 5 minutes. Thereafter, the sieve was shaken using a sieve having an opening of 1000 μm, the weight of the peeled material that passed through the sieve was weighed, and the peel rate was calculated by the following equation.
Peeling rate (%) = weight of peeled material (g) / weight of adhered material (g) contained in 20 g of coated rice seed before test × 100
The same test was performed on the coated rice seeds obtained in Production Examples 2, 4 to 7 and Comparative Production Examples 1, 2, 4, and 5.
However, the adhering substance in the above formula refers to all solid substances adhering to rice seeds used in the above production examples or comparative production examples, specifically iron oxide, the present alpha starch, agricultural chemicals. Active ingredient.
The results are shown in Table 4.
プラスチックシャーレに水で湿らせたガーゼを敷き、その上に製造例1で得られたコーティングイネ種子50粒を置いた。シャーレに蓋をして、17℃の恒温機に静置し、7日後に発芽の有無を調査し、発芽率を以下の式より算出した。
発芽率(%)=発芽した種子数/50×100
製造例2~4及び比較製造例6で得られたコーティングイネ種子を用いて、同じ試験を行った。結果を表5に示す。 Test example 3
A gauze moistened with water was laid on a plastic petri dish, and 50 coated rice seeds obtained in Production Example 1 were placed thereon. The petri dish was covered and placed in a thermostatic chamber at 17 ° C., and after 7 days, the presence or absence of germination was investigated, and the germination rate was calculated from the following formula.
Germination rate (%) = number of germinated seeds / 50 × 100
The same test was conducted using the coated rice seeds obtained in Production Examples 2 to 4 and Comparative Production Example 6. The results are shown in Table 5.
2 ポリエチレン製カップ
3 攪拌機
4 スタンド 1
Claims (5)
- 酸化鉄と、2%水懸濁液の20℃における膨潤度が10~48mL/gであるアルファー澱粉と
を含むイネ種子用コーティング資材。 A rice seed coating material comprising iron oxide and alpha starch having a degree of swelling of 10 to 48 mL / g of a 2% aqueous suspension at 20 ° C. - 農薬活性成分を含む請求項1記載のイネ種子用コーティング資材。 The rice seed coating material according to claim 1, comprising an agrochemical active ingredient.
- 酸化鉄と、2%水懸濁液の20℃における膨潤度が10~48mL/gであるアルファー澱粉と
を含むコーティング資材によりイネ種子がコーティングされているコーティングイネ種子。 Coated rice seed in which rice seed is coated with a coating material containing iron oxide and alpha starch having a swelling degree of 10 to 48 mL / g at 20 ° C. in a 2% aqueous suspension. - 酸化鉄、2%水懸濁液の20℃における膨潤度が10~48mL/gであるアルファー澱粉、および農薬活性成分
を含むコーティング資材によりイネ種子がコーティングされているコーティングイネ種子。 Coated rice seed, wherein rice seed is coated with a coating material containing iron starch, alpha starch having a swelling degree of 10 to 48 mL / g at 20 ° C. in a 2% aqueous suspension, and an agrochemical active ingredient. - 請求項3または4に記載のコーティングイネ種子を直接水田に播くイネの栽培方法。 A rice cultivation method wherein the coated rice seed according to claim 3 or 4 is directly sown in a paddy field.
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JP2016510315A JP6493390B2 (en) | 2014-03-28 | 2015-03-16 | Rice seed coating material and coated rice seed |
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WO2017043364A1 (en) * | 2015-09-07 | 2017-03-16 | 住友化学株式会社 | Coated rice seed and method for producing same |
KR20190097252A (en) | 2017-01-30 | 2019-08-20 | 제이에프이 스틸 가부시키가이샤 | Seed coatings, cloth seeds and seed coating methods |
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KR200485038Y1 (en) | 2017-01-11 | 2017-11-22 | 김영윤 | Apparatus for Oxidation and Drying of Seed Coated Iron Powder |
CN108094454A (en) * | 2018-01-17 | 2018-06-01 | 安徽省华禾种业有限公司 | A kind of vegetable seeds coating agent for being used to improve germination rate |
CN110959334A (en) * | 2019-12-14 | 2020-04-07 | 玉溪中烟种子有限责任公司 | Germination culture medium for improving activity of tobacco seeds under low-temperature condition |
CN115211263A (en) * | 2021-04-16 | 2022-10-21 | 首立企业股份有限公司 | Rice seed coating material, rice seed coated with coating material and coating method |
TWI787788B (en) * | 2021-04-20 | 2022-12-21 | 首立企業股份有限公司 | Rice seed coating material, rice seed coated with coating material and coating method |
CN113647308B (en) * | 2021-08-17 | 2023-03-14 | 中煤浙江生态环境发展有限公司 | Re-greening repair backfill material |
CN113519372A (en) * | 2021-08-17 | 2021-10-22 | 中煤浙江生态环境发展有限公司 | Preparation method of composite green repairing backfill material |
CN114586790B (en) * | 2022-03-23 | 2024-03-19 | 宜宾学院 | Direct seeding rice flooding-resistant growth regulator and use method thereof |
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KR20190097252A (en) | 2017-01-30 | 2019-08-20 | 제이에프이 스틸 가부시키가이샤 | Seed coatings, cloth seeds and seed coating methods |
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PH12016501765A1 (en) | 2017-02-06 |
CN106132188B (en) | 2019-03-01 |
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TW201538066A (en) | 2015-10-16 |
KR102329011B1 (en) | 2021-11-18 |
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