Seedling raising pot, plant seedling product using the same, and method for transplanting plant seedlings

Abstract

To provide a seedling raising pot capable of efficiently preventing insect damages applied to the plant seedlings, from mollusk such as, slug and snail, in both of during seedling raising and after implantation of the seedlings to soil, and a plant seedling product using the same and an implantation method of the plant seedlings.SOLUTION: A seedling raising pot comprises: a cup base part comprising, a bottom part and a side wall part; and a repellent band part which is arranged above the cup base part so as to form an opening end part, and includes an animal repellent. The cup base part and the repellent body part are independently formed of a biodegradable material, and a thickness of the repellent band part is greater than a thickness of the side wall part of the cup base part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a seedling pot, a plant seedling product using the same, and a method for transplanting a plant seedling. [Background technology]

[0002] In the agricultural or horticultural fields, seedling pots are often used to produce flowers, fruit trees, garden trees, or trees. Specifically, for example, seeds are sown and germinated in the seedling pot, and the seedlings are allowed to grow in the seedling pot until they reach a specified size (plant seedlings), and then the seedlings are transplanted into a specified soil. However, during this process, damage caused by pests such as slugs, snails, and aphids is serious, and especially when the seedlings are in the bud to seedling stage, damage caused by mollusks of the order Stylommatophora such as slugs and snails is serious.

[0003] Several techniques have been proposed to prevent these. For example, Patent Document 1 discloses that a member such as a net, woven fabric, nonwoven fabric, or sheet containing a pest repellent is placed around the base of a plant or wrapped around the trunk or stem of the plant to prevent damage to the plant from pests.

[0004] However, the placement of such repellent-containing members cannot sufficiently prevent damage from insects, and furthermore, wrapping the members around the trunks or stems may be unfavorable to the growth of the plant itself.

[0005] On the other hand, Patent Document 2 discloses wrapping a synthetic resin tape, with an adhesive or the like attached to the back side and saponin, a slug repellent, attached to the front side, around the base or stem of a plant. Patent Document 3 discloses a mollusc repellent made of a biodegradable plastic film containing saponin. Patent Document 4 discloses the use of a resin composition containing an ethylene-ethyl acrylate copolymer resin (EEA resin) containing alkyl parahydroxybenzoate to repel mollusks. Patent Document 5 discloses laminating a biodegradable resin onto a paper substrate and using this in a seedling pot.

[0006] However, even if the plant seedlings grown using the above method are transplanted into soil, it is difficult to repel mollusks such as slugs after transplantation. Furthermore, in order to solve this problem, it is necessary to use additional repellents or repellents. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 8-298915 [Patent Document 2] JP 2002-171892 A [Patent Document 3] JP 2017-137261 A [Patent Document 4] JP 2020-055950 A Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention is aimed at solving the above problems, and has as its object to provide a seedling pot that can effectively prevent damage to plant seedlings from mollusks such as slugs and snails both during seedling cultivation and after transplantation into soil, as well as a plant seedling product and a method for transplanting plant seedlings using the same. [Means for solving the problem]

[0009] The present invention provides a cup base having a bottom and sidewalls, and a repellent strip disposed over the cup base to define an open end and containing an animal repellent; The cup base and the repellent body are each independently made of a biodegradable material, In the seedling pot, the thickness of the repellent belt is greater than the thickness of the side wall of the cup base.

[0010] In one embodiment, the biodegradation rate of the repellent strip is slower than the biodegradation rate of the cup base.

[0011] In one embodiment, the repellent belt is configured by disposing a repellent sheet containing the animal repellent around the periphery of the upper side wall of the cup base.

[0012] In one embodiment, the repellent belt portion is configured by disposing an annular repellent sheet containing the animal repellent above the side wall portion of the cup base.

[0013] In one embodiment, the repellent band is formed by a thickened portion on the upper side wall of the cup base containing the animal repellent.

[0014] In one embodiment, the biodegradable material is at least one material selected from the group consisting of paper and biodegradable polymers.

[0015] In one embodiment, the animal repellent is at least one compound selected from the group consisting of saponin, butyl hydroxybenzoate, and hexyl hydroxybenzoate.

[0016] The present invention also relates to a plant seedling product, comprising the above-mentioned seedling pot containing a plant seedling and culture soil.

[0017] The present invention also provides a method for transplanting a plant seedling, comprising the step of placing the plant seedling product in a hole formed in soil such that the repellent band portion of the plant seedling product is exposed above the surface of the soil.

[0018] According to the present invention, it is possible to effectively protect the growing plant seedlings from damage caused by mollusks such as slugs and snails. The seedling pot of the present invention is entirely biodegradable, so that it can be transplanted directly into soil together with the plant seedlings, which eliminates the concern that the used pot will remain as waste. Furthermore, after transplantation into soil, the animal repellent contained in the seedling pot of the present invention can continue to prevent damage caused by the mollusks. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 shows an example of a seedling pot of the present invention, where (a) is a perspective view of the seedling pot, and (b) is a longitudinal sectional view of the seedling pot. [Diagram 2] FIG. 2 is an exploded perspective view of the seedling pot shown in FIG. [Diagram 3] FIG. 2 is an exploded perspective view showing another example of the seedling pot of the present invention. [Figure 4] FIG. 2 is an exploded perspective view showing still another example of the seedling pot of the present invention. [Diagram 5] FIG. 2 is a perspective view for explaining an example of a plant seedling product using the seedling pot shown in FIG. 1. [Figure 6] 6 is a schematic cross-sectional view for explaining an example of transplanting the plant seedling product shown in FIG. 5 into soil, where (a) is a cross-sectional view showing the state of the plant seedling product immediately after being transplanted into soil, (b) is a cross-sectional view showing the state of the plant seedling product after being transplanted into soil in which biodegradation of the seedling pot has partially progressed, and (c) is a cross-sectional view showing the state of the seedling pot after being transplanted into soil in which biodegradation has been completely completed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention will now be described in detail with reference to the drawings.

[0021] (Seedling pot) 1 is a perspective view of an example of the seedling pot of the present invention. As shown in (a) of FIG. 1, the seedling pot 100 of the present invention includes a cup base 110 and a repellent belt 120.

[0022] The cup base 110 has a bottom 102 and a side wall 104, which together form a cup shape. The bottom 102 has, for example, a circular, elliptical, rectangular, hexagonal or other polygonal shape. As shown in FIG. 1(b), the seedling pot 100 of the present invention may be provided with one or more drainage holes 105. The side wall 104 is preferably designed to expand in diameter from the bottom 102 upward.

[0023] A repellent strip 120 is disposed above the cup base 110 forming the open end 106 and contains an animal repellent.

[0024] Here, in the seedling pot 100 of the present invention, the thickness T k is the thickness T of the side wall portion 104 c Here, the thickness T of the repellent belt portion 120 is designed to be larger than k refers to the sum of the thickness of the repellent sheet 122 and the thickness of the upper side wall portion 108. k is the thickness T of the side wall portion 104 c Since the width of the repellent belt 120 is larger than that of the side wall 104, when the seedling pot 100 of the present invention is transplanted into soil, the repellent belt 120 requires more time to be completely biodegraded than the side wall 104. In other words, when the seedling pot 100 of the present invention is transplanted into soil, the side wall 104 biodegrades and disappears faster than the repellent belt 120, while the repellent belt 120 can remain longer than the side wall 104. As a result, the seedling pot 100 of the present invention can be transplanted directly into soil by utilizing its biodegradable properties, while the repellent effect of the animal repellent contained in the repellent belt 120 can be maintained for a long time.

[0025] Thickness T of the repellent belt portion 120 k The thickness T of the side wall 104 is not necessarily limited, but is, for example, 0.05 mm to 3 mm. cAlthough not necessarily limited, for example, in the present invention, the thickness T k and the thickness T of the side wall portion 104 c Ratio of T k / T c For example, the ratio T is greater than 1 and less than or equal to 10, and preferably 1.5 to 8. k / T c By being within such a range, in the seedling pot of the present invention, the time required for the repellent belt portion 120 to biodegrade can be longer than that of the side wall portion 104, and the repellent effect of the animal repellent contained in the repellent belt portion 120 can be maintained for a long time.

[0026] Alternatively, the seedling pot 100 of the present invention is designed so that the biodegradation rate of the repellent belt 120 is slower than that of the cup base 110. This allows the seedling pot 100 of the present invention, after being transplanted into soil, to biodegrade and disappear before the repellent belt 120. In other words, the repellent belt 120 can remain longer than the cup base 110, so that the repellent effect of the animal repellent contained in the repellent belt 120 can be maintained for a long time.

[0027] In the seedling pot 100 of the present invention, the cup base 110 and the repellent belt 120 are each composed of an independent biodegradable material. That is, the cup base 110 in the seedling pot 100 of the present invention may be made of the same or different biodegradable material as the repellent belt 120.

[0028] The biodegradable material that may constitute the cup base 110 and / or the repellent belt 120 is one that has the property of being gradually decomposed by being transplanted into soil and left there as described below, and examples thereof include paper and biodegradable polymers, and combinations thereof. The biodegradable material that may constitute the cup base 110 and / or the repellent belt 120 may be a laminate using a plurality of the above-mentioned papers and biodegradable polymers.

[0029] The paper that may constitute the cup base 110 and / or the repellent belt 120 is not particularly limited, but considering that it will be used as a seedling pot, it is preferable that it has the above-mentioned biodegradability while also having a moderate water resistance that is not easily torn by rainfall or watering. Specific examples of such paper include fine paper, medium-quality paper, wood-reinforced paper, roll paper, kraft paper, and miscellaneous industrial paper, as well as combinations thereof.

[0030] The biodegradable polymers that may constitute the cup base 110 and / or the repellent band 120 include biochemical materials exhibiting biodegradability (e.g., cellulose, cellulose acetate, chitosan, starch, and modified starch) and biodegradable resins, or combinations thereof. Examples of the biodegradable resins include poly-3-hydroxyalkanoate (PHA)-based resins, polybutylene succinate (PBS)-based resins, polybutylene adipate terephthalate (PBAT)-based resins, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH)-based resins, and polyglycolic acid (PGA)-based resins, and combinations thereof. Alternatively, the biodegradable resin may be a biodegradable thermoplastic resin such as polyhydroxybutyrate, polylactic acid, polycaprolactone, polybutylene succinate, polybutylene succinate adipate, polybutylene succinate carbonate, polyethylene succinate, and polyvinyl alcohol, and combinations thereof. Because of ease of handling and rapid decomposition in soil, the cup base 110 and / or the repellent strip 120 are preferably made of cellulose, polyhydroxyalkanoic acid (PHA), polylactic acid (PLA), polybutylene succinate (PBS), or combinations thereof.

[0031] In addition to the biodegradable material, the cup base 110 and / or the repellent band 120 may contain other additives within a range that does not impair the biodegradability or moldability of the biodegradable material.

[0032] Examples of other additives that may be contained in the cup base 110 and / or the repellent belt 120 include, but are not limited to, agents having medicinal properties other than the animal repellents described below (e.g., anti-mite agents, insect repellents); antioxidants (e.g., phenol-based antioxidants, sulfur-based antioxidants, and / or phosphorus-based antioxidants); ultraviolet absorbing agents (e.g., benzophenone-based ultraviolet absorbing agents and / or benzotriazole-based ultraviolet absorbing agents); antistatic agents (e.g., anionic surfactants, cationic surfactants, nonionic surfactants, and and / or amphoteric active agents); clarifying agents (e.g., carboxylate metal salts, sorbitols, and / or phosphate metal salts); lubricants (e.g., hydrocarbon-based lubricants, fatty acid-based lubricants, higher alcohol-based lubricants, fatty acid amide-based lubricants, metal soap-based lubricants, and / or ester-based lubricants); flame retardants (e.g., organic flame retardants and / or inorganic flame retardants); and plasticizers (e.g., epoxidized vegetable oils, phthalates, and / or polyester-based plasticizers); and combinations thereof. The content of the above other additives that may be contained in the cup base 110 and / or the repellent band 120 is not particularly limited, and any amount may be selected by one skilled in the art.

[0033] The cup base 110 can be produced by forming the biodegradable material into a sheet or film shape, for example, by extrusion using a T-die, vacuum molding the material into a bowl shape, and then providing drainage holes 105 in the bottom 102 as necessary. Alternatively, the cup base 110 can be produced by cutting a sheet or film of the biodegradable material into the shape of the bottom and the shape of the developed view of the side surface, and bonding them together via heat sealing or a predetermined adhesive. The temperature for heat sealing in the above step is not necessarily limited because it varies depending on the type of biodegradable material (biodegradable resin) used, but is, for example, 140°C to 350°C.

[0034] In the seedling pot 100 of FIG. 1, a repellent sheet 122 containing an animal repellent 130 is disposed around the upper sidewall 108 that extends integrally from the sidewall 104 of the cup base 110 as shown in FIG. 2. The position of the repellent sheet 122 on the upper sidewall 108 is not necessarily limited, but the repellent sheet 122 is preferably disposed near the opening end 106. Here, "the repellent sheet is disposed near the upper end" includes a state in which the end of the repellent sheet 122 and the opening end 106 of the upper sidewall 108 overlap, and a state in which the end of the repellent sheet 122 and the opening end 106 of the upper sidewall 108 are spaced apart by a distance of less than 15 mm.

[0035] The animal repellents that may be contained in the repellent sheet 122 are agents that are useful for repelling mollusks, particularly mollusks belonging to the order Stylommatophora, such as slugs and snails, and include, for example, saponin, alkyl parahydroxybenzoates, and combinations thereof.

[0036] Alkyl parahydroxybenzoates are the esterification reaction products of parahydroxybenzoic acid and alkyl alcohols.

[0037] The alkyl parahydroxybenzoate preferably contains an alkyl group having 1 to 8 carbon atoms, more preferably 4 to 7 carbon atoms, in its molecular structure. The alkyl group may be either linear or branched. Examples of the alkyl group constituting the alkyl parahydroxybenzoate include a methyl group, an ethyl group, an n-propyl group, an n-butyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, an n-octyl group, an isopropyl group, an isobutyl group, an s-butyl group, a t-butyl group, an isopentyl group, an s-pentyl group, a 3-pentyl group, and a t-pentyl group.

[0038] Specific examples of the alkyl parahydroxybenzoate in the present invention include butyl parahydroxybenzoate (eg, n-butyl parahydroxybenzoate) and hexyl parahydroxybenzoate (eg, n-hexyl parahydroxybenzoate), and combinations thereof.

[0039] In the present invention, saponin, butyl hydroxybenzoate, hexyl hydroxybenzoate, and combinations thereof are preferred examples of animal repellents 130 because they are readily available commercially and have excellent repellent effects against mollusks such as slugs and snails.

[0040] The content of the animal repellent 130 in the repellent sheet 122 is 0.5% by mass to 60% by mass, preferably 1% by mass to 50% by mass, and more preferably 1% by mass to 45% by mass, based on the total mass of the repellent sheet 122. If the content of the animal repellent 130 is less than 0.5% by mass, the resulting repellent sheet may not be able to provide a sufficient repellent effect against mollusks. If the content of the animal repellent 130 exceeds 60% by mass, the content of the biodegradable material in the repellent sheet 122 decreases relatively, and the surface of the resulting repellent sheet may become very sticky.

[0041] When the repellent sheet 122 is disposed around the upper side wall 108, the repellent sheet 122 and the upper side wall 1008 are attached to each other, for example, by heat sealing or adhesives known in the art. In this case, the animal repellent 130 may be added to the repellent sheet 122 (for example, by kneading the biodegradable material constituting the repellent sheet 122 with the animal repellent 130) before this attachment, or the animal repellent 130 may be applied to the outer surface and / or the inside by any means such as spraying, impregnation, etc., after forming the repellent sheet 122 into the shape of the biodegradable material and other additives as necessary.

[0042] Alternatively, in the present invention, as shown in Fig. 3, a ring-shaped repellent sheet 222 formed to be approximately the same size as the open end 206 of the cup base 210 may become the repellent belt 220, and may be attached to the open end 206 of the cup base 210 via an adhesive or the like to form the seedling pot 200. In this case, the animal repellent 130 may be added to the repellent sheet 222 (for example, by kneading the biodegradable material constituting the repellent sheet 222 with the animal repellent 130) before this attachment, or the animal repellent 130 may be applied to the outer surface and / or inside of the repellent sheet 222 by any means such as spraying, impregnation, etc. after the repellent sheet 222 is formed using the biodegradable material and other additives as necessary.

[0043] Alternatively, in the present invention, as shown in Fig. 4, the seedling pot 300 may be constructed by using the vicinity of the open end 306 located above the cup base 310 as the repellent belt 320 as it is. For this reason, in the embodiment shown in Fig. 4, the cup base 310 and the repellent belt 320 are integrated. In this case, the animal repellent 130 may be applied to the outer surface and / or the inside of the part corresponding to the repellent belt 320 by any means such as spraying, impregnation, etc., after the cup base 310 and the repellent belt 320 are integrally formed using a biodegradable material and, if necessary, other additives.

[0044] As described above, the seedling pot of the present invention has a cup base and a repellent strip both made of biodegradable materials, and is itself biodegradable. Therefore, it can be placed directly in the soil, and after placement, its biodegradability will promote natural decomposition. As a result, compared to conventional seedling pots made of polyethylene, etc., the possibility of becoming waste and causing environmental pollution problems can be significantly reduced.

[0045] (Plant seedling product and method for transplanting plant seedling) As described above, the seedling pot itself is biodegradable, and the plant seedlings grown in the pot and the seeds sown therein (collectively referred to as plant seedlings) can be distributed in the market as a single plant seedling product as is. In this regard, as shown in Fig. 5, the plant seedling product 500 of the present invention contains a plant seedling 510 and culture soil 520 in the seedling pot 100.

[0046] The type of plant seedling 510 is not particularly limited, and may be any seedling or seed of a plant that can be grown in a conventional nursery pot. Specific examples include seedlings and seeds of agricultural plants such as tomatoes, cucumbers, okra, and peas, and horticultural plants such as morning glories, pansies, tulips, and hydrangeas.

[0047] According to the above-mentioned plant seedling product, the plant seedling in the seedling pot can be transplanted into soil as follows. Specifically, for example, as shown in (a) of Fig. 6, the plant seedling product 500 is placed in a hole 620 provided in soil 610 so that the repellent belt portion 120 of the plant seedling product 500 is exposed from the surface of the soil 610.

[0048] In this way, in the present invention, when the plant seedling 510 is transplanted into the soil 610, the plant seedling 510 and the culture soil 520 are not removed from the cup base 110, but are placed in a state of being contained in the cup base 110. Here, the repellent belt 120 is exposed from the surface of the soil 610 by an amount equivalent to the height t of the repellent belt 120, as shown in Fig. 6. As a result, the cup base 110 is buried in the soil 610, and the repellent belt 120 is maintained in a state of being exposed from the surface of the soil 610.

[0049] With this arrangement, the animal repellent contained in the repellent zone 120 is arranged around the plant seedling 510 transplanted in the soil 610 at a distance equivalent to the inner radius of the cup body 110, and it is possible to prevent damage to the plant seedling 510 from mollusks such as slugs and snails. Furthermore, since the repellent zone 120 is exposed from the surface of the soil 610 by a height t, mollusks must climb over the repellent zone 120 to reach the plant seedling 510, which further reduces the possibility of damage to the plant seedling.

[0050] As time passes, the seedling cup 100 gradually becomes embrittled due to the biodegradability of both the cup base 110 and the repellent belt 120 (FIG. 6(b)). However, as described above, in the seedling cup 100, the thickness of the repellent belt 120 is greater than that of the cup base 110, so in the state shown in FIG. 6(b), the cup base 110 becomes embrittled before the repellent belt 120. On the other hand, the animal repellent contained in the repellent belt 120 still remains around the plant seedling 510 transplanted into the soil 610, so that the plant seedling 510 can be protected from damage by mollusks such as slugs and snails.

[0051] As time passes, the biodegradation of both the cup base and the repellent belt of the seedling cup 100 progresses further, and both the cup base and the repellent belt completely collapse or disappear. In this state, the animal repellent 130 remains between the soil 610 and the culture soil 520 (FIG. 6(c)). This animal repellent 130 remains in a ring shape around the plant seedling 510, further preventing damage to the plant seedling 510 from mollusks such as slugs and snails.

[0052] In this way, when the seedling pot of the present invention is used, since both the cup base and the repellent belt are biodegradable, even if the pot is left in the soil, it can naturally decompose without polluting the environment as waste. On the other hand, since the animal repellent contained in the repellent belt is kept at a certain distance from the plant seedling, the plant seedling 510 can be protected from mollusks such as slugs and snails for a long period of time even if both the cup base and the repellent belt are completely decomposed. [Industrial Applicability]

[0053] The invention is useful, for example, in the horticultural and agricultural fields. [Explanation of symbols]

[0054] 100,200,300 Seedling pot 102 Bottom 104 Side wall 105 Drainage holes 106,206,306 Open end 108 Upper side wall 110,210,310 Cup base 120,220,320 Repellent belt 122,222 Repellent sheet 130 Animal repellents 500 Plant seedling products 510 Plant seedlings 520 Cultivating soil 610 Soil

Claims

1. a cup base having a bottom and a sidewall, and a repellent strip disposed above the cup base to define an open end and containing an animal repellent; The cup base and the repellent body are each independently made of a biodegradable material, The thickness of the evasive belt portion is greater than the thickness of the side wall portion of the cup base, The seedling pot has a slower biodegradation rate of the repellent strip than that of the cup base.

2. 2. The seedling pot according to claim 1, wherein the repellent belt is configured by disposing a repellent sheet containing the animal repellent around the periphery of an upper side wall of the cup base.

3. 2. The seedling pot according to claim 1, wherein the repellent belt portion is configured by disposing an annular repellent sheet containing the animal repellent above the side wall portion of the cup base.

4. 2. The seedling pot according to claim 1, wherein the repellent belt portion is constituted by a thick portion containing the animal repellent on an upper side wall portion of the cup base.

5. 5. The seedling pot according to claim 1, wherein the biodegradable material is at least one material selected from the group consisting of paper and biodegradable polymers.

6. 6. The seedling pot according to claim 1, wherein the animal repellent is at least one compound selected from the group consisting of saponin, butyl hydroxybenzoate, and hexyl hydroxybenzoate.

7. A plant seedling product comprising a plant seedling and culture soil housed in the seedling pot according to any one of claims 1 to 6.

8. 10. A method for transplanting a plant seedling, comprising the step of placing the plant seedling product according to claim 7 in a hole formed in soil such that the repellent strip of the plant seedling product is exposed above the surface of the soil.

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