JP2005232111A - Weed growth suppressing agent and weed growth suppressing material containing main component common therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a weed growth suppressing agent (material) produced solely from natural resources and friendly to environment by using the plant growth suppressing effect of cedar and cypress. <P>SOLUTION: A liquid extract produced by extracting cedar or cypress is used as a spraying liquid. The weed growth suppressing material is produced by adding a soil improver and a binder to its bark or an extract thereof and forming the mixture in the form of block or sheet. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technology for suppressing weed growth intended for horticulture such as road green zones, roadside trees, park greenery, home gardening, and more specifically, with cedar or cypress bark, or an extract thereof as a main component, By adding a natural material to this as it is or as a natural material, a weed growth inhibitor that can be maintained naturally and can maintain a circulatory ecosystem, and a weed growth inhibitor that shares the same main component with it.

  Conventionally, herbicides have been used to control weeds, but most of these are based on chemically synthesized substances, including acute toxicity to humans, residual and accumulated toxicity, carcinogenicity, and teratogenicity. There are concerns about the destruction of ecosystems in the environment. Therefore, in recent years, it has been proposed to control weeds using natural materials instead of these chemical compounds.

  For example, Japanese Patent Laid-Open No. 11-241065 discloses a soil improvement material in which granular carbon is mixed with an aggregate of needle-like fibers. This is to improve the CCI method, which uses the repellent insecticidal effect of cedar and cypress bark instead of pesticides, improve water retention by adding granular charcoal, and improve the growth of turf, etc. . Used to improve parks and playgrounds. However, this is only as a soil conditioner and cannot be laid at the base of seedlings and used to control the growth of weeds.

  Japanese Patent Laid-Open No. 2000-83492 discloses that a dry-distilled solution of a plant having an inhibitory effect on germination of weeds is adsorbed on an inorganic mineral and mixed with the bark to produce a laminated mulching material mainly composed of bark. . Bamboo vinegar and wood vinegar are shown as examples of the dry distillation liquid. As an example of the inorganic mineral, silica or the like having high oil absorption ability is shown. Thereby, it is said that the ability to suppress germination of coniferous bark is compensated for, and the ability to suppress germination can be increased and maintained for a long time. However, since it is configured as a mulching material, it cannot be used freely for pots or the like in which flowers are planted to suppress the growth of weeds.

  Japanese Patent Application Laid-Open No. 2001-31969 discloses a soil improvement material obtained by carbonizing bark such as cedar and cypress in an anaerobic state or a low oxygen state. This soil improvement material can be used for soil quality improvement of a ground baseball field, a tennis court, etc., and it is shown that generation | occurrence | production of weeds can be suppressed. However, this is for maintenance of a ground or the like, and cannot be used for suppressing the growth of weeds in flower beds on which flowers grow.

  Japanese Patent Application Laid-Open No. 2002-154912 discloses an example in which a pulverized product such as pruned branches and a resin are kneaded to form a sheet, which is used as a weed suppression sheet. This is a so-called weed padding mat and can prevent the grass from growing by maintaining the light shielding property and penetration resistance. However, resin is used for the sheet, and only a growth suppressing effect due to light shielding can be expected.

  Japanese Patent Laid-Open No. 2002-309687 discloses a hinokiol-containing body laying material extracted from cypress, which is intended to be laid under or around the floor of a building. Hinokiol has been shown to be able to prevent termites from entering because of its antibacterial and insecticidal functions. However, this can only be used as a building material.

  As described above, the conventional techniques for suppressing weed growth indicate the need for a weed growth inhibitory function, and as a weed growth inhibitor (material) for pure horticulture, while observing the weed growth inhibitory effect of cypress and cedar. In addition, weed growth inhibitors (materials) have been developed that can be easily sprayed or laid on parks, existing green areas, gardens, planting pots, and existing fields, and that do not have any adverse environmental impact on the soil after laying. There wasn't.

On the other hand, purified water sludge from industrial waterworks and waterworks is treated as garbage under the name, but this material is originally accumulated from soil and sand with high nutritional value from mountainous areas. The soil is good quality. Similarly, the papermaking sludge incineration ash, lime, and shells contain effective fertilizer components of the soil. Traditionally, these have been treated as industrial waste, but if this can be integrated into a weed growth inhibitor, weed control of weed growth and soil improvement are maintained in a balanced manner, and the natural environment is protected by recycling resources. It becomes possible to do.
Japanese Patent Laid-Open No. 11-241065 JP 2000-83492 A JP 2001-31969 JP 2002-154912 A JP 2002-309687 A

  As described above, cedar and cypress are naturally occurring plants, and it is known that the growth process contains antibacterial substances and various plant growth inhibitory substances from the principle of natural selection. . This substance is a natural substance that has been involved in the maintenance of ecosystems in the natural environment so far, and is an environmentally friendly substance that does not lead to environmental destruction. Therefore, the present invention focuses on these characteristics of bark that is currently treated in large quantities as waste, and an object thereof is to make it widely used in general horticulture as a weed growth inhibitor (material).

  Also, select natural substances that can be used as soil conditioners from purified water sludge for industrial waterworks and waterworks, incinerated ash from papermaking sludge, lime, and shells, and mix these with ingredients for inhibiting weed growth of cypress or cedar. High-value-added weed growth inhibitor that can be made into a lump or sheet shape, not only the weed growth suppression effect but also the landscaping for horticulture, and finally fertilizer, and weed growth that shares it with the main component An object is to provide an inhibitor.

  The weed growth inhibitor by the extract of the present invention for solving the above problems is a cedar or cypress bark cut or ground to 2 mm mesh or less, water, 0.01N to 0.1N aqueous alkaline solution, or hexane. It is characterized by being immersed in one or more organic solvents selected from acetone, ethanol and methanol, extracted, and containing no other chemicals. Do not add any other drugs. The extract contains an active ingredient such as hinokiol that can suppress weed growth at a high concentration. Therefore, the growth of weeds growing on the soil surface can be suppressed by diluting this or this concentrated solution to an appropriate concentration and spraying it on the horticultural soil. In order to enhance the effect, it is preferable to weed and clean the soil surface before use. Long-lasting effects are expected after use, and labor can be reduced by reducing the number of sprays. The extract of cedar or cypress existing in nature is the main component, has little biotoxicity, and can be used as an environment-friendly weed growth inhibitor.

  In the case of an alkaline aqueous solution of 0.01N to 0.1N, the extract is adjusted to pH 6 to 8, diluted 0 to 500 times and sprayed. Even at high dilution concentrations, existing flowers and trees will not die. Dilution of 500 times or more reduces the weed growth suppression effect, so the number of spraying must be increased.

  Next, the lump weed growth suppression material of the present invention is a natural component such as purified water sludge, paper sludge incineration ash, lime, shellfish powder, etc., selected as a soil improvement material, cedar or cypress as a weed growth suppression effect agent. A bark pulverized product or an extract extracted from the pulverized product is added, and an organic binder is added thereto to form a lump.

  Use cedar or cypress bark cut or crushed to 2 mm mesh or less. The compounding ratio of the bark, the soil improvement material, and the binder is 1: 0 to 50: 0 to 50 (volume: weight: weight). The binder can be selected from one or more of biodegradable plastics, starch, egg whites, trolley mushrooms, and Noroitsugi.

  The size of the agglomeration is about 2 to 5 cm, and is determined according to the use of the park, flower bed, home flower bed, vegetable garden, flowering tree, pot, etc. In general, large grains are used for large areas and small grains are used for small areas. It does not matter if they are mixed.

  When laying a massive weed growth control material in a horticultural field, first pull the grass of the horticultural land, clean it, and then seed the grains to form 2-3 layers. This makes the garden look very beautiful. In the case of pearl shell powder, there is a sense of quality. When water is sprayed from above, the main component of the weed growth inhibitor is stained in a small amount in the soil and suppresses the growth of weeds over a long period of time. When the effect diminishes, for example, after one year, it is integrated with the soil and becomes soil nutrients and returns to the soil. A new weed growth suppression material can be laid again from above.

  Granular weed growth control material can be laid down to 10cm below the ground. As a result, an effect similar to that obtained by spraying an effective ingredient over the entire ground is produced, so that weeds, particularly small weed seeds, are unlikely to sprout, and the growth of small roots is suppressed. Large seeds and already growing flowers and trees have no significant effect.

  The extract can be used in place of cedar or cypress bark. In this case, the blending ratio of the extract, the soil improvement material, and the binder is 1: 1 to 100: 1 to 50 (volume: weight: weight). By finishing it into a lump with an outer diameter of 2 to 5 cm, the same action and effect as those using bark can be obtained. The same applies to points that can be laid in the ground.

  The sheet-like weed growth inhibitor is a cedar or cypress bark cut or crushed to 2 to 5 cm, virgin pulp and waste paper pulp, and a binder of 1: 0.1 to 10: 0 to 10 (weight ratio). It is obtained by mixing at a ratio and processing into a sheet up to a thickness of 10 cm. By laying it on the soil that has been leveled, weed growth can be suppressed and complete control can be achieved. Unlike the grass mats shown in the conventional example, since no resin is used, it can be smashed, and after a certain period of time, it can be smashed finely to make soil nutrients embedded in the ground.

  Sheet-like weed growth control materials can also be buried at a depth of up to 10cm in the ground. According to this method, by burying in the ground, it is possible to grow small vegetation above it, and to suppress the growth of small weeds in that portion. The dispersion of the effective component is due to the capillary action of rainwater. When the effect diminishes, for example, it can be cultivated with tractors and finely crushed to obtain nutrients in the soil.

  According to the weed growth inhibitor by the cedar or cypress bark extract of the present invention, the weed growth inhibitory effect inherent to the cedar or cypress bark can be obtained at a high concentration, and it can be used for gardening while appropriately diluting it. Can be used. Since only the cedar or cypress bark is used, there is little impact on the environment, and it can be used with confidence.

  According to the lump weed growth suppression material of the present invention, since all the materials are only natural products involved in the maintenance of the ecosystem, there is little impact on the environment. Moreover, since it is a block shape, it is easy to use it for horticulture, and it is only necessary to lay it on soil that has been leveled and cleaned, and weed growth can be effectively suppressed. When the growth-suppressing effect is weakened, it can be laid in the soil as a nutrient. The horticultural objects can be neatly decorated with the lump, especially when using pearl shell powder.

  According to the sheet-like weed growth suppression material of the present invention, it is possible to expect a control effect over that of a normal weed removal mat, and it is possible to suppress the growth of grass that grows in the gaps of the mat. In addition, since the product is only hardened with an organic binder, unnecessary folds can be finely crushed and soaked into the soil to become nutrients. The sheet-like weed growth suppression material can be buried up to 10 cm in the ground, and can grow plants above this, and can suppress weed growth in the upper soil.

  Hereinafter, an example is shown and an optimal form for carrying out the present invention is explained.

  FIG. 1 is a flowchart showing a process of extracting a cedar or cypress component to produce an extract, and a process of making a lump product using the extract. Reference numerals shown in the chart indicate the process or its material.

  As shown in the figure, the bark 1 is extracted with water 2, a solvent 3, or an alkaline aqueous solution 4 of 0.01N to 0.1N. In the case of the alkaline aqueous solution 4, a neutralization step 5 is inserted later. The extract 6 thus obtained is a liquid product 7.

  As the bark 1, cedar or cypress bark is exclusively used. Any one may be sufficient and a mixture may be sufficient. Depending on the mixing ratio, it can be classified into cedar extract, cypress extract and the like. It is also possible to display the ratio.

  Product 7 is used as a weed growth inhibitor. Concentrated products can also be made. The dilution rate is 0 to 500 times. Even if the undiluted solution is sprayed, the grown flowers will not die. Germination, rooting and growth can be suppressed. The spraying method is to first take the grass of the garden, clean it, and spray it on the soil. It does not affect the growth of existing flowering trees and can suppress the growth of weeds from the cleaning soil. Care for the flower bed is much easier. By the way, we have to weed several times a year (for example, 5 times) in the flower bed of park green areas and road green areas, but this number can be reduced.

  In FIG. 1 again, the bulking material 8 and the binder 9 are added to the extract 6, and it is expanded into a lump 10 and dried 11 to obtain a product 12. It is a condition that the bulking agent 8 is not simply increased in weight but is selectively used as a soil improver. As the bulking material (soil improving material), it can be selected from pearl shells, industrial water or purified water sludge for waterworks, paper sludge incinerated ash, lime and the like. In particular, purified water sludge is called mountain sludge and is a mountain product, and can be used as a high-quality soil improvement material containing effective minerals. In addition, the shell of the pearl shell has a good gloss, and not only can the beautiful product 12 be produced, but also its component is a fertilizer.

  As the binder, organic agents such as biodegradable plastics, starch, egg white, trolley mushrooms, nororitsugi can be used. The mixing ratio of the extract 6, the extender 8 and the binder 9 is made of only naturally-friendly materials, so the ratio is 1: 1 to 100: 1 to 50 (volume: weight: weight). Can be set freely.

  The shape of the product 12 is generally a sphere having a diameter of 2 to 5 cm. An elliptical sphere or a square may be used instead of a true sphere. In a product including a pearl shell, a perfect circle shape is preferable in order to show a high-class feeling.

  Product 12, after taking the grass of the garden and cleaning, rose 3-10 cm thick on the soil. As a result, the appearance of the park can be made beautiful. For flower pots, products with a diameter of 1-2 cm are preferred. For the purpose of beautification, the product can be colored according to the type of the filler 8.

  The product 12 sown in the garden is put into the soil by rainwater or watering. Therefore, the growth of weeds is suppressed, and the labor for maintenance of the garden can be saved. Since the light-shielding function is included, the growth suppression effect is high and the effective period is permanent.

  After the disappearance of the weed growth inhibiting function, the product 12 can be laid in the soil. The product laid in the soil is absorbed as soil nutrients and becomes new soil. As a result, a circulating ecosystem can be maintained.

  FIG. 2 is a flowchart showing an embodiment in which a bulk product is obtained by adding the filler 8 and the binder 9 to the bark 1. The bark 1 is cut into a 2 mm mesh 13, sieved 14, and expanded by adding an extender 8 and a binder 9, and then dried 11 to obtain a product 16. The compounding ratio of the bark 1, the filler 8 and the binder 9 is 1: 0 to 50: 0 to 50 by weight.

  Unlike the product 12 shown in FIG. 1, the product 16 includes the fiber component of the bark 1, so that the product 16 is high in water content and rich in organic components. The actions and effects are the same as those shown in FIG.

  FIG. 3 is a flowchart showing an embodiment of obtaining a sheet-like weed growth inhibitor. A mixed pulp 17 of virgin pulp and waste paper pulp and a binder 9 are mixed 18 with the bark 1, molded 19 into a sheet shape up to a thickness of 10 cm, dried 11, and made into a product 20. The mixing ratio of the bark 1, the pulp 17, and the binder 9 is 1: 0.1 to 10: 0 to 10 by weight.

  The sheet-like product 20 has an effect of suppressing weed growth, but since it is in the form of a sheet, it also serves as a weed mat, and can be used to control the grass on the lower surface by laying it on the soil. The control function is long-lasting but practically several years. Since the sheet-like product 20 of the present invention does not use a resin, it is finely broken when it is struck, becomes a fertilizer for the soil, and can be integrated with the soil. Thus, expired products can be integrated into the soil and maintain a circulating ecosystem.

  The sheet-like product 20 can be embedded in the soil at a depth of about 10 cm. In this case, since the components are infiltrated into the upper soil by rainwater or the like and the weed growth suppression effect is exhibited, it is possible to suppress the growth of weeds while growing the flowering trees on the upper part of the sheet. After use, it can be broken by tillage and integrated into the soil.

  4 and 5 are diagrams in which the growth inhibition effect of the bark 1 on the plant is examined. FIG. 4 is a diagram comparing the degree of growth of the stem length (cm) of various plants using soil containing bark 1 in normal soil. FIG. 5 is a diagram comparing root lengths (cm) in the same test.

  As shown in the figure, regarding stem length, although there is a difference depending on the type of plant, a growth suppressing function of 25 to 70% was observed. Moreover, regarding root length, the growth inhibitory effect of 5.3 to 80% was recognized although there was a difference similarly by plant kind. The effect on Gramineae plants is significant on Gramineae weeds with roots.

It is a flowchart which shows the manufacturing process of the liquid weed growth inhibitor which concerns on one Embodiment of this invention, and the process of obtaining a block product from the extract. It is a flowchart which shows the manufacturing process of the lump-like weed growth suppression material which concerns on one Embodiment of this invention. It is a flowchart which shows the manufacturing process of the sheet-like weed growth suppression material which concerns on one Embodiment of this invention. It is explanatory drawing which shows one Example of this invention. It is explanatory drawing which shows the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bark 2 Water 3 Solvent 4 Alkaline aqueous solution 6 Extract 7, 7, 20 Product 8 Bulking material (soil improvement material)
9 Binder 17 Pulp

Claims (3)

  The bark of cedar or cypress cut or crushed to 2 mm mesh or less is made of water, an aqueous alkali solution of 0.01N to 0.1N, or one or more organic solvents selected from hexane, acetone, ethanol, and methanol. A weed growth inhibitor characterized in that it is immersed in one of the ingredients, extracted, and contains no other chemicals.   Extracted from pulverized cedar or cypress bark as a weed growth inhibitor or natural product such as purified water sludge, paper sludge incinerated ash, lime, and shell powder selected as soil conditioners and extenders A weed growth inhibitor characterized by adding an extract and adding an organic binder thereto to form a lump. Weed growth suppression, characterized by mixing virgin pulp and waste paper pulp with cedar or cypress bark cut or crushed to 2-5 cm and an organic binder, and molding this into a sheet of 10 cm or less in thickness Wood.

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