JP2005065700A - Seed coating material and coated seed using the same - Google Patents
Seed coating material and coated seed using the same Download PDFInfo
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Abstract
【課題】
灌水等の水分供給によって被覆層に水が接触した際に、速やかに被覆層の上部が開裂するコーティング材料を提供すること。
【解決手段】
相対湿度１００％中での平衡含水率が５．０〜１０．０湿重量％、仮比重が０．１０〜０．４０ｇ／ｃｍ3 の粉体および水溶性バインダーから実質的になることを特徴とする種子粒径が１５００μｍ程度以下のオーダーである種子用コーティング材料、および該種子用コーティング材料を用いて被覆されたコーティング種子を提供する。
【選択図】 なし
【Task】
To provide a coating material in which the upper part of a coating layer is rapidly cleaved when water comes into contact with the coating layer by water supply such as irrigation.
[Solution]
It is characterized by substantially consisting of a powder and a water-soluble binder having an equilibrium water content in a relative humidity of 100% of 5.0 to 10.0% by weight and a temporary specific gravity of 0.10 to 0.40 g / cm3. A seed coating material having a seed particle size on the order of about 1500 μm or less, and a coated seed coated with the seed coating material are provided.
[Selection figure] None
Description
本発明は、種子を利用する分野において播種作業を省力化させるためのペレット種子用コーティング材料に関するものである。 The present invention relates to a coating material for pellet seeds for saving labor in seeding work in the field of using seeds.
種子を利用する分野において播種作業を省力化し、少ない労働力で大規模な作業をするために多様な形状をした種子を一定の形状や特定の重量に被覆造粒する技術、すなわち種子コーティングがますます重要となってきている。とりわけ、農業生産においては効率的でかつ、計画的な栽培を行うための高性能な種子が要求されている。
一般の野菜の種子のような比較的大粒の種子においては、従来から様々な種子用コーティング材料が知られており、例えば非晶質シリカ、タルク、カオリナイト、珪藻土、炭酸カルシウム等の無機物の単材もしくはそれらの混合物が使用されている。これらの無機物をデンプン、ゼラチン、ＰＶＡまたは水等の結合材と共に種子にコーティングすることによってコーティング種子を得ていた。
In the field of seed utilization, there is a technology to save seeding work and to granulate seeds with various shapes to a certain shape and specific weight in order to perform large-scale work with a small labor force, that is, seed coating It has become increasingly important. Especially in agricultural production, efficient and high-performance seeds for planned cultivation are required.
In the case of relatively large seeds such as general vegetable seeds, various seed coating materials have been conventionally known. For example, simple inorganic substances such as amorphous silica, talc, kaolinite, diatomaceous earth, and calcium carbonate. Materials or mixtures thereof are used. Coated seeds were obtained by coating these inorganic substances onto seeds together with a binder such as starch, gelatin, PVA or water.
しかしながら、野菜の種子のように吸水によって被覆層内部の種子が膨張し、その力で被覆層に亀裂を生じせしめるような場合と異なり、一般に花の種子に代表されるような種子粒径が１５００μｍ程度以下のオーダーである種子の場合、種子の膨張力で被覆層に亀裂を生じせしめるまでに時間がかかるため、とりわけ発芽に際して光を必要とするような種子では裸種子と比較して著しい発芽遅延もしくは発芽率低下をきたしてしまう等の問題があった。また被覆層に亀裂が入り幼根が生長し始めた場合、乾燥固結性の強いコーティング材料を用いると、微細な根系が固い材質（被覆層）に接触して傷みやすいという欠点もあった。
従って、灌水等の水分供給によって被覆層に水が接触した際に、速やかに被覆層の上部が開裂するコーティング材料が望まれていた。
However, unlike the case where the seed inside the coating layer expands due to water absorption as in the case of vegetable seeds, the seed particle size generally represented by flower seeds is 1500 μm, unlike the case where the coating layer is cracked by that force. In the case of seeds of the order of less than about, it takes time to cause cracks in the coating layer due to the expansion force of the seeds. Or there was a problem that the germination rate was lowered. In addition, when the coating layer is cracked and radicles begin to grow, the use of a coating material having a strong dry-consolidating property has the drawback that the fine root system is easily damaged by contact with a hard material (coating layer).
Accordingly, there has been a demand for a coating material in which the upper part of the coating layer is rapidly cleaved when water comes into contact with the coating layer by supplying water such as irrigation.
このような状況下で、本発明者らは鋭意検討を行った結果、相対湿度１００％中での平衡含水率がある特定範囲で、仮比重がある種の範囲にある粉体および水溶性バインダーから実質的になるように調製した種子用コーティング材料を用いて種子を被覆することによって、灌水等の水分供給によって被覆層に水が接触した際に、速やかに被覆層の上部が開裂すること、さらに該種子用コーティング材料によって発芽性能を低下させることなく発芽速度、発芽率共に充分に満足できるコーティング種子が製造できることを見い出し本発明を完成させた。
すなわち、本発明は、相対湿度１００％中での平衡含水率が５．０〜１０．０湿重量％、仮比重が０．１０〜０．４０ｇ／ｃｍ3 の粉体および水溶性バインダーから実質的になることを特徴とする種子用コーティング材料（以下、本発明コート材料と記す。）、および該種子用コーティング材料を用いて被覆されたコーティング種子（以下、本発明コート種子と記す。）を提供するものである。
Under such circumstances, the present inventors have conducted intensive investigations. As a result, the powder and water-soluble binder have a specific range of equilibrium moisture content in a relative humidity of 100% and a certain range of temporary specific gravity. By covering the seed with a seed coating material prepared so as to be substantially from the above, when water comes into contact with the coating layer by supplying water such as irrigation, the upper part of the coating layer is rapidly cleaved, Further, the present invention has been completed by finding that the seed coating material can produce coated seeds with sufficiently satisfactory germination speed and germination rate without reducing germination performance.
That is, the present invention is substantially composed of a powder and a water-soluble binder having an equilibrium water content of 5.0 to 10.0% by weight and a temporary specific gravity of 0.10 to 0.40 g / cm 3 at 100% relative humidity. A seed coating material (hereinafter referred to as a coated material of the present invention), and a coated seed coated with the seed coating material (hereinafter referred to as a coated seed of the present invention). To do.
本発明コート材料を用いて種子を被覆することによって、灌水等の水分供給によって被覆層に水が接触した際に、速やかに被覆層の上部が開裂すること、さらに該種子用コーティング材料によって発芽性能を低下させることなく発芽速度、発芽率共に充分に満足できるコーティング種子の製造を可能にした。 By coating the seed with the coating material of the present invention, when water comes into contact with the coating layer by supplying water such as irrigation, the upper portion of the coating layer is rapidly cleaved, and germination performance is further improved by the seed coating material. This makes it possible to produce coated seeds that are sufficiently satisfactory in both germination rate and germination rate without lowering.
以下、さらに詳細に本発明を説明する。
本発明において用いられる粉体とは、相対湿度１００％中での平衡含水率が５．０〜１０．０湿重量％、仮比重が０．１０〜０．４０ｇ／ｃｍ3 である必要がある。上記のような比較的低い平衡含水率を有する粉体は、例えば、カオリン、珪藻土、クロライト、パイロフィライト、タルク等の粘土鉱物の中から適するものを選択すればよい。もちろん、これらを組み合わせることも可能である。仮にカオリン、珪藻土、クロライト、パイロフィライト、タルク等の粘土鉱物であっても、相対湿度１００％中での平衡含水率が１０．０湿重量％を超えるような吸湿性の粉体の場合には、粒子間の付着力が高くなりすぎ、本発明が解決するような被覆層の上部が開裂性が得られない。一方、５．０湿重量％未満の超低吸湿性の粉体の場合には、粒子間の付着力が低くなりすぎ、本発明が解決するような被覆層の上部が開裂性が得られない。また、仮比重が０．１０〜０．４０ｇ／ｃｍ3 の範囲を外れた場合にも、被覆層に水が接触した際に、速やかに被覆層の上部が開裂しなくなるので、本発明に適する平衡含水率を有する粉体の中から、さらに仮比重の適するものを選択することによって本発明において用いられる粉体を選び出すことができる。
なお、本発明における良好な開裂性とは、コーティング種子を湿った濾紙上に置いた際に約１０秒程度で被覆層の上部が開裂し始め、種子が露出することを意味する。
また、本発明において用いられる粉体の粒度（粒径）は、約２８０メッシュ（５３μｍ）程度以下であることが好ましい。特に花の種子に代表されるような種子粒径が１５００μｍ程度以下のオーダーである種子、たとえば、ベゴニア種子の粒径は１２０〜２５０μｍ、ユーストマで２００〜３５０μｍ、りんどう、ペテュニアで２９０〜７１０μｍ、の場合、被覆材料の粒度が大きくなると加工性が悪くなる等の影響が大きい。
Hereinafter, the present invention will be described in more detail.
The powder used in the present invention is required to have an equilibrium moisture content of 5.0 to 10.0% by weight and a temporary specific gravity of 0.10 to 0.40 g / cm @ 3 in a relative humidity of 100%. The powder having a relatively low equilibrium water content as described above may be selected from suitable clay minerals such as kaolin, diatomaceous earth, chlorite, pyrophyllite, and talc. Of course, it is also possible to combine these. Even if clay minerals such as kaolin, diatomaceous earth, chlorite, pyrophyllite, talc, etc., in the case of hygroscopic powder whose equilibrium moisture content exceeds 100% by weight in 100% relative humidity In this case, the adhesion force between the particles becomes too high, and the upper part of the coating layer which can be solved by the present invention is not cleavable. On the other hand, in the case of an ultra-low hygroscopic powder of less than 5.0% by weight, the adhesion between the particles becomes too low, and the upper part of the coating layer as solved by the present invention cannot be cleavable. . Further, even when the temporary specific gravity is out of the range of 0.10 to 0.40 g / cm 3, the upper part of the coating layer is not easily cleaved when water comes into contact with the coating layer. The powder used in the present invention can be selected by selecting a powder having an appropriate moisture content from powders having a moisture content.
The good cleavability in the present invention means that when the coated seed is placed on a moist filter paper, the upper part of the coating layer starts to be cleaved in about 10 seconds and the seed is exposed.
Further, the particle size (particle size) of the powder used in the present invention is preferably about 280 mesh (53 μm) or less. In particular, seeds having a seed particle size of the order of 1500 μm or less as typified by flower seeds, for example, the particle size of begonia seeds is 120 to 250 μm, 200 to 350 μm for eustoma, 290 to 710 μm for apples and petunias, In this case, when the particle size of the coating material is increased, the influence of deterioration of workability is large.
本発明において用いられる水溶性バインダーとしては、例えば、カルボキシメチルセルロース、ポリビニルピロリドン、ポリ酢酸ビニル、ＰＶＡ等をあげることができる。
該水溶性バインダーは、約０．５ｃｐｓから約１５ｃｐｓの粘度範囲に調製した水溶液の形で、通常、被覆材料に添加されたり、または種子に直接吹き付けながら使用される。仮にこの濃度が約０．５ｃｐｓ未満であると被覆層の強度が不足し、良好な製品（コーティング種子）収率の低下につながり、一方、約１５ｃｐｓを超えると粘性が高くなることで団粒が多く加工できなくなるか、あるいは被覆層の強度が高すぎて発芽が遅延したり、粘着性が勝って根系の呼吸活動を抑制したりして良好な製品（コーティング種子）が得られない。
また、本発明において用いられる水溶性バインダーの粒度（粒径）は、約２８０メッシュ（５３μｍ）程度以下であることが好ましい。特に花の種子に代表されるような種子粒径が１５００μｍ程度以下のオーダーである種子、たとえば、ベゴニア種子の粒径は１２０〜２５０μｍ、ユーストマで２００〜３５０μｍ、りんどう、ペテュニアで２９０〜７１０μｍ、の場合、被覆材料の粒度が大きくなると加工性が悪くなる等の影響が大きい。
Examples of the water-soluble binder used in the present invention include carboxymethyl cellulose, polyvinyl pyrrolidone, polyvinyl acetate, and PVA.
The water-soluble binder is usually used in the form of an aqueous solution prepared in a viscosity range of about 0.5 cps to about 15 cps, added to the coating material, or sprayed directly on the seed. If this concentration is less than about 0.5 cps, the strength of the coating layer will be insufficient, leading to a decrease in the yield of good products (coating seeds). Many products cannot be processed, or the strength of the coating layer is too high, germination is delayed, or the adhesiveness is superior and the root system respiratory activity is suppressed, and a good product (coated seed) cannot be obtained.
The particle size (particle size) of the water-soluble binder used in the present invention is preferably about 280 mesh (53 μm) or less. In particular, seeds having a seed particle size of the order of 1500 μm or less as typified by flower seeds, for example, the particle size of begonia seeds is 120 to 250 μm, 200 to 350 μm for eustoma, 290 to 710 μm for apples and petunias, In this case, when the particle size of the coating material is increased, the influence of deterioration of workability is large.
また本発明コート材は、相対湿度１００％中での平衡含水率が５．０〜１０．０湿重量％、仮比重が０．１０〜０．４０ｇ／ｃｍ3 の粉体および水溶性バインダーから実質的になることを特徴とする種子用コーティング材料であるが、他の成分として殺菌剤、殺虫剤等の農薬、発芽促進剤等の植物成長調節剤等を適当量含有させることもできる。さらに、本発明コート材を用いて種子を被覆造粒するに際して、予め殺菌剤、殺虫剤等の農薬や発芽促進剤等の植物成長調節剤等を適当量種子に付着させておくこともできる。このようにして種子の発芽促進や病害虫の予防をすることも可能である。 The coating material of the present invention is substantially composed of a powder having an equilibrium moisture content of 5.0 to 10.0% by weight and a temporary specific gravity of 0.10 to 0.40 g / cm @ 3 in a relative humidity of 100% and a water-soluble binder. The seed coating material is characterized in that it can contain an appropriate amount of agrochemicals such as bactericides and insecticides, and plant growth regulators such as germination promoters as other components. Further, when the seed is coated and granulated using the coating material of the present invention, an appropriate amount of agrochemicals such as bactericides and insecticides, plant growth regulators such as germination promoters, and the like may be previously attached to the seeds. In this way, seed germination can be promoted and pests can be prevented.
本発明コート材を用いて種子を被覆造粒する方法としては、例えば、流動装置や回転パン等を使用する公知の方法をあげることができる。
以下、本発明を実施例によってさらに詳しく説明するが、本発明は以下の実施例のみに限定されるものではない。
Examples of the method for coating and granulating seeds using the coating material of the present invention include known methods using a fluidizer, a rotating pan, and the like.
EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited only to a following example.
実施例１
回転パンにユーストマ（Eustoma russellianum G. Don ）種子を５０ｇ投入し、回転数１４０ｒｐｍで種子を回転させながら、粉体としてパイロフィライトとカオリンの混合物〔３：２（重量比）、相対湿度１００％中での平衡含水率が１０湿重量％程度、仮比重が０．３２ｇ／ｃｍ3 〕を１５ｇ／分の速度で徐々に供給し、同時に水溶性バインダーとして粘度１０ｃｐｓのＰＶＡ水溶液も１．５ｇ／分の速度で供給し、３０分間加工することによって、本発明コート材料による種子の被覆造粒を行った。さらに得られた被覆造粒種子を乾燥機を用いて、最終含水率が４．５湿重量％になるまで乾燥することによって、本発明コート種子（粒径は１．００〜１．６８ｍｍφ）を得た。得られた本発明コート種子の圧縮強度（ｇ）は９０で、水接触１分後の開裂性（％）は８２であった。また、本発明コート材料の加工性はよく、しかも良好な製品（コーティング種子）収率は９３％と高い値であった。
Example 1
50 g of Eustoma russellianum G. Don seeds are put into a rotating pan, and a mixture of pyrophyllite and kaolin as a powder [3: 2 (weight ratio), relative humidity 100%, while rotating seeds at 140 rpm Is gradually supplied at a rate of 15 g / min, and an aqueous PVA solution having a viscosity of 10 cps as a water-soluble binder is also 1.5 g / min. The seed was coated and granulated with the coating material of the present invention. Furthermore, by drying the obtained coated granulated seeds using a dryer until the final moisture content becomes 4.5% by weight, the coated seeds of the present invention (particle diameter is 1.00 to 1.68 mmφ) Obtained. The obtained coated seed of the present invention had a compressive strength (g) of 90, and a cleavability (%) after 1 minute of water contact of 82. In addition, the processability of the coating material of the present invention was good, and the good product (coating seed) yield was as high as 93%.
試験例１
実施例１によって得られた本発明コート種子の発芽性能を調査するために、被覆前の裸種子と同時に育苗培土（太平園芸培土）をつめたプラグトレーに播種し、上面から充分に灌水して育苗ハウス内で栽培した。７日目に発芽勢（％）および１４日目に発芽率（％）を調査した。その結果を表１に示す。本発明コート種子は発芽性能を低下することなく発芽勢、発芽率共に裸種子と同等であった。
Test example 1
In order to investigate the germination performance of the coated seeds of the present invention obtained in Example 1, the seeds were sowed on a plug tray filled with seedling culture soil (Taihei Horticultural soil) at the same time as the bare seeds before coating, and thoroughly irrigated from the upper surface. Cultivated in a nursery house. Germination vigor (%) on day 7 and germination rate (%) on day 14 were investigated. The results are shown in Table 1. The coated seeds of the present invention were equivalent to the bare seeds in germination vigor and germination rate without deteriorating germination performance.
実施例２
回転パンにエキザカム（Exacum affine Balf. ）種子を２０ｇ投入し、回転数１４０ｒｐｍで種子を回転させながら、粉体としてパイロフィライト、カオリンおよびタルクの混合物〔５：３：２（重量比）、相対湿度１００％中での平衡含水率が８湿重量％程度、仮比重が０．３４ｇ／ｃｍ3 〕を３５ｇ／分の速度で徐々に供給し、同時に水溶性バインダーとして粘度８ｃｐｓのカルボキシメチルセルロース水溶液も１．５ｇ／分の速度で供給し、３０分間加工することによって、本発明コート材料による種子の被覆造粒を行った。さらに得られた被覆造粒種子を乾燥機を用いて、最終含水率が４．５湿重量％になるまで乾燥することによって、本発明コート種子（粒径は１．００〜１．６８ｍｍφ）を得た。得られた本発明コート種子の圧縮強度（ｇ）は９２で、水接触１分後の開裂性（％）は７８であった。また、本発明コート材料の加工性はよく、しかも良好な製品（コーティング種子）収率は９７％と高い値であった。
Example 2
20 g of Exacum affine Balf. Seeds are put into a rotating pan, and the mixture of pyrophyllite, kaolin and talc is used as a powder while rotating the seeds at a rotation speed of 140 rpm [5: 3: 2 (weight ratio), relative An equilibrium water content at 100% humidity is about 8% by weight and a temporary specific gravity is 0.34 g / cm 3] at a rate of 35 g / min. At the same time, an aqueous carboxymethyl cellulose solution having a viscosity of 8 cps is also used as a water-soluble binder. The seed was coated and granulated with the coating material of the present invention by feeding at a rate of 0.5 g / min and processing for 30 minutes. Furthermore, by drying the obtained coated granulated seeds using a dryer until the final moisture content becomes 4.5% by weight, the coated seeds of the present invention (particle diameter is 1.00 to 1.68 mmφ) Obtained. The resulting coated seed of the present invention had a compressive strength (g) of 92 and a cleavability (%) of 1 minute after contact with water. Moreover, the processability of the coating material of the present invention was good, and the yield of a good product (coated seed) was as high as 97%.
試験例２
実施例２によって得られた本発明コート種子の発芽性能を調査するために、被覆前の裸種子と同時に育苗培土（太平園芸培土）をつめたプラグトレーに播種し、上面から充分に灌水して育苗ハウス内で栽培した。７日目に発芽勢（％）および１４日目に発芽率（％）を調査した。その結果を表２に示す。本発明コート種子は発芽性能を低下することなく発芽勢、発芽率共に裸種子と同等であった。
Test example 2
In order to investigate the germination performance of the coated seed of the present invention obtained in Example 2, it was sown in a plug tray filled with a seedling culture soil (Taihei Horticultural soil) at the same time as the bare seed before coating, and sufficiently irrigated from the upper surface. Cultivated in a nursery house. Germination vigor (%) on day 7 and germination rate (%) on day 14 were investigated. The results are shown in Table 2. The coated seeds of the present invention were equivalent to the bare seeds in germination vigor and germination rate without deteriorating germination performance.
比較例１
回転パンにユーストマ（Eustoma russellianum G. Don ）種子を５０ｇ投入し、回転数１４０ｒｐｍで種子を回転させながら、粉体としてベントナイトとパリゴルスカイトの混合物〔１：４（重量比）、相対湿度１００％中での平衡含水率が２５湿重量％程度、仮比重が０．４０ｇ／ｃｍ3 〕を１５ｇ／分の速度で徐々に供給し、同時に水溶性バインダーとして粘度１０ｃｐｓのカルボキシメチルセルロース水溶液も１．５ｇ／分の速度で供給し、３０分間加工することによって、比較コート材料による種子の被覆造粒を行った。さらに得られた被覆造粒種子を乾燥機を用いて、最終含水率が４．５湿重量％になるまで乾燥することによって、比較コート種子（粒径は１．００〜１．６８ｍｍφ）を得た。得られた比較コート種子の圧縮強度（ｇ）は６８０で、水接触１分後の開裂性（％）は０であった。
Comparative Example 1
50 g of Eustoma russellianum G. Don seeds were put into a rotating pan, and the mixture of bentonite and palygorskite [1: 4 (weight ratio) in a relative humidity of 100% while rotating the seeds at a rotation speed of 140 rpm Is gradually supplied at a rate of 15 g / min, and an aqueous carboxymethylcellulose solution having a viscosity of 10 cps as a water-soluble binder is also 1.5 g / min. The seed was coated and granulated with a comparative coating material by feeding at a speed and processing for 30 minutes. Further, by drying the obtained coated granulated seed using a dryer until the final moisture content becomes 4.5% by weight, a comparative coated seed (particle size is 1.00 to 1.68 mmφ) is obtained. It was. The comparative coated seed obtained had a compressive strength (g) of 680 and a cleavability (%) of 1 minute after contact with water.
比較試験例１
比較例１によって得られた比較コート種子の発芽性能を調査するために、被覆前の裸種子と同時に育苗培土（太平園芸培土）をつめたプラグトレーに播種し、上面から充分に灌水して育苗ハウス内で栽培した。７日目に発芽勢（％）および１４日目に発芽率（％）を調査した。その結果を表３に示す。比較コート種子は発芽性能を著しく低下し、発芽勢、発芽率共に裸種子より著しく劣った。
Comparative Test Example 1
In order to investigate the germination performance of the comparative coated seed obtained in Comparative Example 1, the seedling was sowed in a plug tray filled with a seedling culture soil (Taihei Horticultural soil) at the same time as the bare seed before coating, and sufficiently irrigated from the upper surface. Grown in the house. Germination vigor (%) on day 7 and germination rate (%) on day 14 were investigated. The results are shown in Table 3. The comparative coated seeds significantly reduced the germination performance, and the germination vigor and germination rate were significantly inferior to those of the bare seeds.
比較例２
回転パンにエキザカム（Exacum affine Balf. ）種子を２０ｇ投入し、回転数１４０ｒｐｍで種子を回転させながら、粉体としてベントナイトとパリゴルスカイトの混合物〔１：４（重量比）、相対湿度１００％中での平衡含水率が２５湿重量％程度、仮比重が０．４０ｇ／ｃｍ3 〕を３５ｇ／分の速度で徐々に供給し、同時に水溶性バインダーとして粘度８ｃｐｓのカルボキシメチルセルロース水溶液も１．５ｇ／分の速度で供給し、３０分間加工することによって、比較コート材料による種子の被覆造粒を行った。さらに得られた被覆造粒種子を乾燥機を用いて、最終含水率が４．５湿重量％になるまで乾燥することによって、比較コート種子（粒径は１．００〜１．６８ｍｍφ）を得た。得られた比較コート種子の圧縮強度（ｇ）は６４３で、水接触１分後の開裂性（％）は０であった。
Comparative Example 2
Into a rotating pan, 20 g of Exacum affine Balf. Seeds were added, and while rotating the seeds at a rotation speed of 140 rpm, a mixture of bentonite and palygorskite [1: 4 (weight ratio) in a relative humidity of 100% An equilibrium water content of about 25% by weight and a temporary specific gravity of 0.40 g / cm 3] are gradually supplied at a rate of 35 g / min. At the same time, an aqueous carboxymethyl cellulose solution having a viscosity of 8 cps as a water-soluble binder is also a rate of 1.5 g / min. The seeds were coated and granulated with a comparative coating material. Further, by drying the obtained coated granulated seed using a dryer until the final moisture content becomes 4.5% by weight, a comparative coated seed (particle size is 1.00 to 1.68 mmφ) is obtained. It was. The comparative coated seed obtained had a compressive strength (g) of 643 and a cleavability (%) of 1 minute after contact with water.
比較試験例２
比較例２によって得られた比較コート種子の発芽性能を調査するために、被覆前の裸種子と同時に育苗培土（太平園芸培土）をつめたプラグトレーに播種し、上面から充分に灌水して育苗ハウス内で栽培した。７日目に発芽勢（％）および１４日目に発芽率（％）を調査した。その結果を表４に示す。比較コート種子は発芽性能を著しく低下し、発芽勢、発芽率共に裸種子より著しく劣った。
Comparative test example 2
In order to investigate the germination performance of the comparative coated seeds obtained in Comparative Example 2, the seedlings were sown in a plug tray filled with seedling culture soil (Taihei Horticultural soil) at the same time as the bare seed before coating, and the seedlings were sufficiently irrigated from the top surface. Grown in the house. Germination vigor (%) on day 7 and germination rate (%) on day 14 were investigated. The results are shown in Table 4. The comparative coated seeds significantly reduced the germination performance, and the germination vigor and germination rate were significantly inferior to those of the bare seeds.
参考例１
回転パンにユーストマ（Eustoma russellianum G. Don ）種子を５０ｇ投入し、回転数１４０ｒｐｍで種子を回転させながら、粉体としてパイロフィライトとカオリンの混合物〔３：２（重量比）、相対湿度１００％中での平衡含水率が１０湿重量％程度、仮比重が０．３２ｇ／ｃｍ3 ）を１５ｇ／分の速度で徐々に供給し、同時に水溶性バインダーとして粘度０．３ｃｐｓのＰＶＡ水溶液も１．５ｇ／分の速度で供給し、３０分間加工することによって、参考コート材料による種子の被覆造粒を行った。さらに得られた被覆造粒種子を乾燥機を用いて、最終含水率が４．５湿重量％になるまで乾燥することによって、参考コート種子（粒径は１．００〜１．６８ｍｍφ）を得た。得られた参考コート種子の圧縮強度（ｇ）は１６で、水接触１分後の開裂性（％）は４８であった。また、参考コート材料の加工性は悪く、しかも良好な製品（コーティング種子）収率は７６％と低い値であった。
Reference example 1
50 g of Eustoma russellianum G. Don seeds are put into a rotating pan, and a mixture of pyrophyllite and kaolin as a powder [3: 2 (weight ratio), relative humidity 100%, while rotating seeds at 140 rpm Is gradually supplied at a rate of 15 g / min, and at the same time, 1.5 g of a PVA aqueous solution having a viscosity of 0.3 cps is used as a water-soluble binder. The seed was coated and granulated with the reference coating material by feeding at a rate of / min and processing for 30 minutes. Further, the obtained coated granulated seed was dried using a dryer until the final moisture content became 4.5% by weight, whereby a reference coated seed (particle size: 1.00 to 1.68 mmφ) was obtained. It was. The compressive strength (g) of the obtained reference coated seed was 16, and the cleavability (%) after 1 minute of water contact was 48. Further, the processability of the reference coating material was poor, and the good product (coated seed) yield was as low as 76%.
参考試験例１
参考例１によって得られた参考コート種子の発芽性能を調査するために、被覆前の裸種子と同時に育苗培土（太平園芸培土）をつめたプラグトレーに播種し、上面から充分に灌水して育苗ハウス内で栽培した。７日目に発芽勢（％）および１４日目に発芽率（％）を調査した。その結果を表５に示す。参考コート種子は発芽性能を低下することなく発芽勢、発芽率共に裸種子と同等であった。
Reference test example 1
In order to investigate the germination performance of the reference coated seeds obtained in Reference Example 1, seeding was carried out on a plug tray filled with seedling culture soil (Taihei Horticultural soil) at the same time as the bare seed before coating, and the seedlings were sufficiently irrigated from the upper surface. Grown in the house. Germination vigor (%) on day 7 and germination rate (%) on day 14 were investigated. The results are shown in Table 5. The reference coated seeds had the same germination rate and germination rate as the bare seeds without deteriorating the germination performance.
Claims (5)
The seed coating material according to claim 1 or 2, wherein the seed having a seed particle size of about 1500 µm or less is a flower seed.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004293436A JP2005065700A (en) | 2004-10-06 | 2004-10-06 | Seed coating material and coated seed using the same |
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| JP2004293436A JP2005065700A (en) | 2004-10-06 | 2004-10-06 | Seed coating material and coated seed using the same |
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| JP19329194A Division JPH0856424A (en) | 1994-08-17 | 1994-08-17 | Seed coating material and coated seed using the same |
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| JP2006271585A Division JP2007029101A (en) | 2006-10-03 | 2006-10-03 | Seed coating material and coated seed using the same |
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| JP2020164520A (en) * | 2019-03-28 | 2020-10-08 | 三菱ケミカル株式会社 | Binders for seed coatings, seed coatings and coated seeds |
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| JP2020164520A (en) * | 2019-03-28 | 2020-10-08 | 三菱ケミカル株式会社 | Binders for seed coatings, seed coatings and coated seeds |
| JP7443880B2 (en) | 2019-03-28 | 2024-03-06 | 三菱ケミカル株式会社 | Binders for seed coating agents, seed coating agents and coated seeds |
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