KR100416521B1 - Color sand using natural vegatable dye and preparation thereof - Google Patents

Abstract

The present invention relates to a color sand using a natural vegetable dye and a method for manufacturing the same, which is 1.70mm by mixing 70 to 90% by weight of general sand for sanding, 1 to 20% by weight of dolomite, and 1 to 20% by weight of silica. And 0.84mm sieve, followed by 0.005 ~ 0.5 (v / w)% of natural vegetable dye, orange oil (natural oil) and 0.1 ~ 10 (v / w)% of wood vinegar, respectively, vegetable protein, anionic surfactant Color sugar of the present invention prepared by adding 0.005 to 0.5 (v / w)% of low sugar water and 0.1 to 10% by weight of nitrogen, and mixing with an electric mixer for even coloring, is used as a grass colorant. Compared with sand prepared by using sand, it shows higher coloring degree, there is no fear of discoloration at high temperature and high pressure, and it has high initial moisture content, which reduces the dry damage of crops, and the first germination when grass is grown using color sand In addition, different germination rates It is more effective than when grown using.

Description

Color sand using natural vegatable dye and preparation

The present invention relates to a color sand using a natural vegetable dye and a method for producing the same. More specifically, the present invention relates to a color sand which is environmentally friendly and has excellent coloring effect by coloring sand for general clay with natural vegetable dyes and a method for producing the same.

The most difficult problem in the management of the golf course is to provide the player and the owner quickly recover the turf under various damages and stress without inconvenience. Most plants require a certain period of recovery, adequate nutrient supply, moisture, and soil cover (wound and damaged area cover) to fully restore themselves when stressed or damaged from the outside. In general, areas that are made up of recoverable warm season grass ( zoysia sp. ) Do not use damaged areas, and manage various types of management materials (fertilizers, pesticides, soil improvers, nutrients, etc.), and watering, soiling, and coating. It takes more than 25 days for the grass to recover completely from the work, and the cool season grass ( agrostis sp., Poa spp., Festuca sp. Etc) is 15 days depending on the species . It takes around. However, this can be said to be the period during which the grass grows vividly (Nanji grass is from May to early September, and Hanji grass is from March to June and from late August to early November). However, in areas where grass is not growing or where new grass is required to be fed, if the roots are alive and only the leaves are damaged, recovery times, labor and economic expenditures are more than two to three times greater. That is, because of the long recovery period, firstly, the secondary damage of the weakened grass and secondly, the constant supply of nutrients and moisture, such as no fat or soil, and the proper temperature on the soil surface are maintained. Is needed.

The above is a case where management is done without using the damaged area, which is virtually difficult to manage in all these areas in golf courses, stadiums, parks and amusement facilities that require continuous play and use. Therefore, as a requirement for the materials needed in these areas, there is an urgent need for multi-functionality such as visual concealment of the affected area, soil improvement and soil infectious effect, nutrient supply, temperature and moisture control.

Lawn damage areas commonly seen in golf courses, stadiums, parks, and amusement facilities are as follows. ① Areas affected by diseases and pests, ② Damaged areas due to excessive spreading of fertilizers and pesticides, ③ Physically oppressed areas by machine work and people, ④ Areas injured by golf clubs and balls during play (ball mark, divot), ⑤ These multifunctional products are urgently needed for poor growth, ⑥ high temperature and dry areas, ⑦ grass areas before germination after planting grass seeds, ⑧ planting areas under trees, ⑨ reclaimed land, and ⑩ golfer's path. do.

Problems in the management and use of the areas listed above include: Firstly, visual poor conditions must be maintained for a long time, and second golf courses are under-refair areas or concentrated management areas during turf recovery. Not only are they unable to play, but they are also difficult to use in parks and amusement areas. Thirdly, it is an area where both managers and players are inconvenient because daily management must be done during the game.

In order to solve these problems, the most widely used management method in the golf course is first grass replacement and sowing, second various nutrient and fertilizer fertilization methods. Third, grass coloring using coloring agents and coloring agents (着色 制) There is a method of concealing by mixing it with the clay and adding water to it. However, most of the damaged grasses in general stadiums, parks, and recreational areas are left untouched. However, most visually poor areas or small areas are managed by easy-to-manage methods. In order to form a turf like a conventional turf so that the grass is completely rooted in the soil, separate management work such as fertilization, reagents, soiling, and irrigation must be performed for a considerable period (more than 10 to 20 days).

The first and second methods must be done, but it takes a lot of time, manpower, effort and expense to recover the affected grass and special management, as well as inconvenience both managers and players. The third method is to dilute the imported green turf colorant solution and color it directly on the damaged grass leaf or mix it with sand for 培土 用 to cover it with water. However, when the grass colorant is directly treated on the grass lobe, a high level of technology is required due to the difference in the concentration of the leaf color with the existing grass and the heterogeneity due to the long-term coloration effect even after the grass recovery. In addition, the clay which is colored with the sand for the clay has a short coloring period (within 10 days) and cannot produce a color similar to the leaf color of the grass. Using the above materials to produce and process the color sand has the biggest problem that the drainage is not good.

The natural vegetable dye used in the present invention is a patent product developed by a domestic paint specialty venture company (Yuha Natural Paint Co., Ltd.-Gyeongnam Gimhae Materials), and it has about 10 vegetable extracts such as orange, castor, paulownia, and pine. It is an environmentally friendly natural paint made using. Unlike conventional organic synthetic paints, which are widely used to date, natural vegetable paints are toxic and heavy metals, such as benzene, toluene, and formaldehyde, together with volatile substances such as VOC-volatile organic substances and nitrogen oxides generated in automobiles. It is a product that does not generate toxic gas at all. Currently, environmentally friendly natural paints are used for interior and exterior top coating of interior and exterior wood, metal, plastic, wallpaper, gypsum board, concrete, cement mortar, etc.

In order to solve the problems listed above, the present inventors have a natural plant natural dye which is not toxic to plants and is naturally decomposed into microorganisms and nutrient sources in plants after a certain period of time. In addition to anionic surfactant, wood vinegar, low sugar water, nitrogen (nitrogen), natural solvent orange oil, and trace elements (magnesium, calcium, iron, boron), dolomite and silica are added The present invention has been completed.

Accordingly, it is an object of the present invention to provide an environmentally friendly and highly colored color sand by coloring sand for general clay with a natural vegetable dye.

Another object of the present invention to provide a method for producing the color sand.

The above object of the present invention is based on natural vegetable dye, silica sand, vegetable protein, anionic surfactant, wood vinegar, low sugar water, nitrogen (nitrogen), natural solvent orange oil, trace elements (magnesium calcium) In addition to the iron and boron components, dolomite and silica are added to prepare a color sand, and the degree of coloration, water permeability, drainage and water content of the color sand and the germination rate of the grass grown using the color sand of the present invention. Was achieved by investigation.

Hereinafter, the configuration and operation of the present invention.

1 is a photograph showing the colorant preparation sand and general clay sand prepared with the present invention color sand and conventional grass colorants.

Figure 2 is a photograph showing the equipment used for permeability, drainage and moisture content test.

좌 (Left): Normal clay sand, 中 (Medium): Colorant sand, 右 (Right): Color sand

Figure 3 is a graph showing the initial permeability and drainage of the color sand, turf colorant preparation sand, sand for sanding.

Figure 4 is a graph showing the water drainage in the saturation state of the color sand, turf colorant preparation sand, the sand for the clay.

Figure 5 is a graph showing the change in water content over time of the color sand, turf colorant preparation sand, sand for sanding.

Figure 6 is a photograph showing the change in chromaticity before and after the water treatment of the color sand, grass colorant preparation sand, sand for sanding.

좌 (left): color sand, 中 (medium): colorant sand, 右 (right): normal clay

Figure 7 shows the drainage test of the color sand, grass colorant preparation sand, soil sand. 좌 (left): color sand, 中 (medium): colorant sand, 右 (right): normal clay

Figure 8 is a photograph showing the presence or absence of discoloration of the drained water after the drainage test.

좌 (left): color sand, 中 (medium): colorant sand, 右 (right): normal clay

Figure 9 is a photograph showing the state after the autoclave of the color sand, grass colorant preparation sand. 좌 (left): General clay sand, 右 (right): color sand

10 is a photograph comparing the original state, the state after the drainage experiment, the state after the high-pressure heating of the color sand, grass colorant preparation sand.

上 (상): Original sand: color sand,

中 (Medium): Pigmented sand after drainage experiment: Color sand

下 (bottom): Colored sand after high pressure: Color sand

11 is a graph showing the germination state of cold grass in color sand, grass colorant preparation sand, soil for sanding.

12 is a photograph showing the germination of the 15th day of the seeded raggrass in the color sand.

The present invention is mixed with 800g of sand for dolomite, 100g of dolomite, and 100g of silica to make a weight of 1kg by 1.70mm and 0.84mm sieve, and then it is a natural vegetable dye 0.5cc, a natural solvent orange oil and Preparing a color sand by adding 10 cc each of wood vinegar, 0.5 cc each of vegetable protein, anionic surfactant, and low sugar water, and 10 g of nitrogen, and mixing by using an electric mixer for even coloring and mixing; Coloring sand using an existing grass colorant to compare with the prepared color sand; Investigating the water permeability, drainage, water content and persistence of the sand colored with the prepared color sand and turf colorant; The step of the obstacle test for the grass by cultivating the grass with the sand colored with the present invention color sand and grass colorant prepared by examining the germination rate: the coloring period of the sand colored with color sand and grass colorant, agricultural, functional, economical Comprising the step of comparing.

70 to 90% by weight, preferably 80% by weight of sand for general soil use, 1 to 20% by weight of dolomite, preferably 10% by weight, and 1 to 20% by weight of silica, preferably Is used in an amount of 10% by weight, and 0.005 to 0.5 (v / w)% of natural vegetable dyes, preferably 0.05 (v / w)%, and 0.1 to 10 (v / w) each of orange oil and natural vinegar. %, Preferably 1 (v / w)%, 0.005 to 0.5 (v / w)% of vegetable protein, anionic surfactant, low sugar water, preferably 0.05 (v / w)% Nitrogen is used in an amount of 0.1 to 10% by weight, preferably 1% by weight.

Natural vegetable dyes used in the above steps are non-toxic extracts mixed with plant components of more than 10 kinds (orange, castor, rosin, paulownia, etc.) obtained in the circulation of the ecosystem and can be naturally decomposed and have no harm to the human being As an environmentally friendly dye, it has excellent coloring effect for a long time, and can make almost same color as turf color and various other colors, and has excellent adhesion and hiding power.

Orange oil, which is a natural solvent used in the above step, is a natural diluent extracted from orange, which lowers the high viscosity of vegetable natural dyes and lowers the surface tension when coating the surface of the material so that the dye may adhere evenly to the surface of the material. To be able.

It is a material used to improve drainage and poor water content due to vegetable protein, anionic surfactant (tween 80), low sugar water, and orange oil of natural vegetable dyes used in the above steps. When exposed to water, the evaporation of moisture is excellent and natural decomposition is possible.

The wood vinegar used in the above step is to sterilize soil infectious pathogens that can flow into the sand, to suppress pathogens in the soil, to supply various effective nutrients, and to promote the hormonal action of plants such as germination, rooting, flowering, fruiting, and growth of plants It is mixed for microbial growth.

In this step, by mixing with vegetable protein, anionic surfactant, low sugar water (low sugar water) was mixed to increase the coloring effect by reducing the surface tension of the cluster cluster of water.

Nitrogen and trace elements (magnesium, calcium, iron, boron) in this step is the supply of effective nutrients for the rapid recovery and growth of grass. In particular, magnesium, calcium, iron, and boron have been mixed in order to supply trace element components that are likely to be insufficient in soils with high damage such as golf courses and agricultural land (eg, horticultural crops).

Dolomite (Ca, Mg), silica (Silica: Sio ₂ ) As a natural mineral soil modifier for improving the pH, physical and physicochemical properties of the soil in this step, it is possible to suppress the onset of soil infectious pathogens and enhance the disease resistance of host plants. To be mixed.

The natural vegetable dyes used in the present invention used a product developed by a domestic paint specialty venture company (Yuha Natural Paint Co., Ltd.-Gyeongnam Gimhae Materials).

September 1, 2000 (Reception number QAP-00816-00) Chemical analysis according to quality assurance inspection standard (QM-5000-19) for natural vegetable dyes analyzed by the company (Korea Chemical Testing Institute Busan Metropolitan City) Results No heavy metal analysis items Pb, Cr, Cd, Sb, Ba, As, Hg, Se were detected at all, and solvent analysis items Benzene, Toluene, Xylene, and Cyclohexane were not detected at all. No harm has been proved. The result is:

Chemical Analysis of Natural Vegetable Dyes Test Items unit Result Heavy metal testing PbCrCdSbBaAsHgSe Mg / kgmg / kgmg / kgmg / kgmg / kgmg / kgmg / kgmg / kg Not detected Not detected Not detected Not detected Not detected Not detected Not detected Not detected Not detected Solvent Analysis Benzene Toluene XyleneCyclohexane %%%% Not detected Not detected Not detected Not detected

Hereinafter, the specific method of the present invention will be described in detail with reference to Examples, but the scope of the present invention is not limited only to these Examples.

Example: Preparation of Color Sand of the Present Invention

The coarse sand was removed using a 1.70mm sieve for uniformity of the grain state of the general clay, and the soil sand was also removed using a 0.84mm sieve (standard testing sieve). The production of color sand and colored sand is as follows. Color sand is made by mixing 800g of sand for general clay, 100g of dolomite and 100g of silica, and weighing 1.70mm and 0.84mm to make 1kg, and then adding 0.5cc of natural vegetable dye and orange, a natural solvent. 10 cc each of oil and wood vinegar, 0.5 cc each of vegetable protein, anionic surfactant, low sugar water, and 10 g of nitrogen were added. And the color sand was prepared by slowly mixing at a speed of 180rpm using an electric mixer for even coloring and mixing.

Comparative Example: Preparation of Colored Sand Using Grass Coloring Agent

The color of the grass colorant was prepared by mixing 20cc of grass colorant (standard amount of golf course use) to 1kg of general clay sand and slowly mixing at 180 rpm using an electric mixer for coloring.

Experimental Example 1: Water permeability, drainage, water content change test for the color sand (color sand) and the grass coloring agent, the general sand for sanding the present invention.

As shown in FIG. 1, the water permeability and water content of color sand and grass coloring agents prepared in Examples and Comparative Examples were measured, and sand for general clay was measured as shown in FIG. 1.

The sand was colored in color sand and grass coloring agent, dried in a dry oven to remove the moisture contained in the sand for general clay.

As shown in Fig. 2, the test equipment for water permeability, drainage, and moisture content was prepared by preparing a transparent acrylic cylinder (diameter 9.8 cm in diameter, 20 cm in length), and then fixing 0.5 mm mesh inside a cylindrical body 15 cm from above. Made to fall well. And outside the acrylic cylinder was marked with a ruler to investigate the exact height of the test material.

The sand made by coloring the color sand and the grass colorant of the present invention and sand for general clay were put in a weight of 1 kg in an acrylic transparent tester, and then prepared three for each material for three repetition tests. 500cc of distilled water was poured into the test material, and the water reached to the bottom of 0.5mm at 15cm was the first time of water permeability, permeation distance (cm) / second '' and the time when distilled water completely penetrated on each sand surface. The initial permeability and drainage were investigated in terms of drainage, drainage (cc) / hour ”, and 500cc of distilled water was drained in 1st, 2nd, and 3rd steps with the above method in a state where water was completely saturated. Investigate. The water content was measured by measuring the weight of the container before the test, and then measuring the container containing the sample containing water after 4 hours after the drainage and pitching were completed, the second irradiation after 24 hours, the third irradiation after 48 hours, After 72 hours, the fourth survey was conducted to investigate the change of moisture content per day. The results are as shown in Figs.

As a result, as shown in FIG. 3, the water permeability (water permeation distance / water penetration time) and the water drainage (water drainage / water drainage time) using color sand and grass colorant preparation sand, and general sand for sanding were investigated. sec, water drainage was 4.56ml / sec, and water sand was 0.83cm / sec, sand drainage was 7.17ml / sec, sand was 0.93cm / sec and drainage was 5.52ml / sec. Appeared low. This test was conducted in the dry state of each material, indicating a high concentration (water content) of water in the test zone, which showed low drainage.

Figure 4 shows the results of the drainage test in the saturation state of the material in each treatment, the color sand in the first, second, third, and fourth tests 9.29ml / sec, 10.02ml / sec, 9.45ml / sec, 9.23 17.29 ml / sec, 10.16 ml / sec, 8.94 ml / sec and 8.90 ml / sec for the grass-colored preparation sand, respectively, and 12.35 ml / sec, 7.14 ml / sec and 6.79 m / sec respectively. As the number of treatments was repeated as 6.74 ml / sec, it was found that, unlike color sands, the drainage of turfgrass colorant sand and general soil sand gradually decreased.

It is believed that the clay component adhered to the grass colorant preparation sand and the general sand for sanding is washed down with water to agglomerate in the lower layer to reduce water drainage. Differences in the drainage between color sands, grass-colored sands, and general sand for sanding are different from sands and sand particles in color sands. The content of soil to be washed down when drained by artificial adhesion with was judged to be very small compared to grass colorant preparation sand and general sand for sanding.

Figure 5 shows the change in water content over time, after distilled water 500ml irrigation completely distilled water drained the average weight (water content; g) by subtracting the container weight and the weight of the material to the first (4 hours), secondary ( 24 hours), 3rd (48 hours), 4th (72 hours), evaporation of air or volatilization under the vessel was investigated. First, the test was conducted in three repetitions by maintaining the temperature at 25 ° C. and the humidity at about 40% in the growth-chamber for the same test conditions. Findings collar sand test net weight (g) containing the sphere tare weight, a water content (g), the function is the primary reduction (1,518g · 287g · 0g), 2 car (1,505g · 279g · 8g), 3 car (1,492g 266g, 13g), 4th (1,479g, 253g, 13g), grass colorant preparation sand test zones (1,519g, 283g, 0g), 2nd (1,506g, 274g, 9g), 3rd (1,493) g, 261g, 13g), 4th (1,480g, 248g, 13g), and sand test strips for topdressing, respectively (1,511g, 274g, 0g), 2nd (1,498g, 265g, 9g), 3rd (1,486) g 252 g 13 g) and 4th order (1,472 g 238 g 14 g). As a result of this experiment, the water content was measured to be slightly higher than the color sands, which proved that the evaporation suppression effect of water was superior to other materials used in the test. In addition, in all the test zones, the water content was decreased by 13 g on the average daily, which means that the color sands were completely saturated after 23.5 days after the addition of additional moisture in the saturated state, after 23 days for the sand colored with turfgrass, and after 21 days for the general sand It was determined to be dry.

In the drainage, water permeability, and water content test, the present invention color sand has lower initial drainage and water permeability than other materials used in the test, but it maintains high initial moisture content and high moisture state for a long time so that it does not require a lot of water and frequent watering during the field treatment. Even if it is possible to reduce the dry damage of crops by suppressing the evaporation of moisture in the soil. In the rainy season, which is a problem due to a lot of rainfall, it was judged that the damage of crops caused by flooding could be reduced by draining smoothly.

Experimental Example 2 Test for Color Sustainability of Color Sand Colored with Inventive Material Color and Grass Coloring Agent

This experimental example was tested for the sustained effect of coloring on sand colored with the invention color sand (color sand) and grass coloring agent. The materials used for the test and the materials used for the test are the same as in Experimental Example 1. The test was made in three replicates. First, the sand made by coloring the color sand and the grass coloring agent of the present invention was put in a 1 kg weight in an acrylic transparent tester, and then prepared three pieces for each material. Then, 500 ml of distilled water was treated three times in succession, and then water dissipated from each sample was checked for discoloration. In addition, to check for discoloration due to heat and pressure, 6 sand samples made of 6-liter triangular glass flasks and 3 sands made by coloring dried color sand and grass colorants were put in 100 g of each sample and 400 ml of distilled water. Warmed at high temperature and high pressure for 50 minutes in an autoclave.

6 to 10, the color sand did not change in both the original sample and the color of the water saturated state after the drainage test (primary irradiation) and the color after the high temperature and high pressure using the autoclave (secondary irradiation). In the case of turfgrass preparation sand, the original sample was also lower in color than the color sand, and both the color of the sample at the first irradiation and the color at the second irradiation decreased much more than the original sample. This can be easily seen by changing the color of the water drained during the first irradiation.

This is summarized in Table 2 below.

Color change of each test section Test item Original sample Primary investigation Secondary investigation Drained water sample Color sand 10 No discoloration 10 10 Grass Colorant Delicatessen Sand 7 Discoloration 6 5 Remarks See picture [Note] Color: visual evaluation, 10 (high green) ~ 1 (no green)

Through the above results, the color sand of the present invention can be seen that there is no fear of discoloration at high temperature and high pressure and high colorability compared to the sand color using the grass coloring agent, it can be seen that the chromaticity is maintained even in a large moisture environment such as rainy season. In addition, by maintaining the excellent drainage and moisture content in Experimental Example 1 longer than the general sand for sanding during the coloring period, it is determined that it will be beneficial to the grass growth by increasing the drainage failure during the rainy season and the moisture resistance of the dryer.

Experimental Example 3: Obstacle test on the grass of sand colored with the present invention color sand (color sand) and grass coloring agent

In this experiment, three types of cold grass seeds of Creeping bentgrass (Penncross), Prenial ryegrass (Rodeeo), and Pesque (Tall fescue) were used for sand made by coloring color sand and grass coloring agent. After sowing is a test to verify the physiological disorders and germination status (germination rate, germination tax, etc.) of the present invention. The preparation of the sand colored the color sand and the grass coloring agent of the present invention was prepared by the production method of Example and Comparative Example. And a total of 27 testers for each material were put in 1kg of each material in the acrylic transparent tester. This test was performed by three replicates. First, 50 seeds of Creeping bentgrass (Pencross), lygra (Prennial ryegrass; Rodeo) and Toll fescue seeds, which are the grasses to be tested, are evenly seeded in a transparent tester containing each material. 300 ml of water was irrigated in order to saturate the water within. After spraying 24 hours after sowing, spray and spray 15ml (2ℓ / ㎡ standard dose) twice daily at 09:00 AM and 17:00 PM using spray, and check the germination of grass seeds in containers every day. It was. Germination of grass seeds was carried out in a growth-chamber (plant growth phase). The temperature of plant growth was average 20 ℃ (min 15 ℃, max 25 ℃), humidity was kept at 60% and germination was carried out for 10 days.

Figure 11 is the average germination rate of the grass-grass seed for 10 days of the color sand and grass colorant preparation sand, general clay for sanding the present invention, the first germination point of grass seeds showed a slight difference by species Sand and sand for general soil were germinated 3-4 days after sowing, and 5 days after sowing in the case of grass-coloured sand. The average number of germination and germination rate of each test group was 38.7 (77.3%) of bentgrass, 34.3 (68.7%) of lysgrass, 27.0 (54.0%) of pescues, and Brentgrass 27.0 of grass-coloring agent. Dogs (54.0%), 25.3 rygras (50.7%), 14.0 pesques (28.0%), and 36.0 (72.0%) bentgrass, 35.3 lygras (70.7%), pesque 30.7 (61.3%) were surveyed. In the case of color sand, the germination rate was lower than that of general sand, but the germination rate was higher than that of grass color preparation sand.

The germination state 15 days after sowing of lygras is shown in FIG. 12.

As a result, color sand of the present invention did not have any physiological obstacles to three kinds of grass, and it was investigated that not only the first germination but also the germination rate were superior to other test preparations. In view of this, the manpower and economic savings when the present invention material and the Korean paper seed are mixed and treated, such as a lawn fragment (divot), a golf mark, a ball mark, a lesion, etc. It will work.

Experimental Example 4 Sand Colored by the Invention Color Sand and Grass Coloring Agent

Of pigmentation period, concentration, drainage and economic efficiency

The economical analysis of color sands and sands prepared with conventional grass colorants was performed according to the coloring period, coloring concentration, drainage and manufacturing cost. First, the production of the color sand and the conventional turf colorant is produced by mixing the ton of the above-mentioned embodiment and the comparative example using an electric mixer, respectively, and then the economic results according to the manufacturing cost are shown in Table 3.

Cost estimates per tonne of color sand and turf colored sand division Color sand Grass colorant sand Sand (Silicate) 75,000 won / ton 75,000 won / ton Colorant Usage 1L / ton 20L / ton Coloring agent purchase cost 4,500 won / L KRW 570,000 / 20L Others (material cost) 15,500 won / ton - Labor and sensory depreciation 55,000 won 55,000 won system KRW 150,000 700,000won

As shown in Table 3, as a result of manufacturing the color sand and grass colorant sand with each manufacturing method, it was four times more economical than the grass color sand.

Using color sand and grass-colored sand produced in Table 3, it was tested on forge made of creeping bentgrass "penncross" in the Agricultural Resource Utilization Institute, Gyeongsang National University, Gyeongju National University from June 2000 to October the same year. Before the test, the grass was predicted to a height of 5 mm, and then a test zone of 2 m * 2 m area was set, and the color sand and the grass-coloured sand were thrown out 3 mm. The test was performed in three replicates. In addition, the test plot was maintained at a grass height of 5 mm using a green seeding machine once every 3 days, and irrigated at 5ℓ / ㎡ twice a week, and then irradiated once a week for the first month. The concentration change was investigated. As a result of the test, turf-colored sand began to change colorant concentration on the 3rd day after the first irrigation, and after 10 days, it changed to almost the same color as the original sand. However, the color sand remained the same color as the original color until the end of October when the test was finished. The results are shown in Table 4.

Key comparison table for color sands and turf colored sand division Color sand Grass colorant sand Initial change - After 3 days Coloring period More than 150 days 10 days Initial Coloring Dark green Light green Color change Dark green Sand color

Based on the above test results, it was found that color sands showed superior effects in coloration period, color concentration, and manufacturing cost, compared to sand prepared with conventional grass coloring agents.

As described above, the color sand using the natural vegetable dyes of the present invention as described through the above Examples and Experimental Examples are not toxic to plants and are naturally decomposed to soil microorganisms and nutrients in plants after a certain period of time. By using dyes, it is environmentally friendly, maintains color for a long time, increases drainage and water functionality, and contains vegetable protein and trace elements to increase the absorption of nutrients. Soil acidity (pH) improvement and sterilization effect by wood vinegar is a very useful invention in the landscape industry and environmental industry.

Claims (4)

(a) mixing 70 to 90% by weight of general sand for sanding, 1 to 20% by weight of dolomite, and 1 to 20% by weight of silica to filter 1.70 mm and 0.84 mm sieve; (b) 0.005 to 0.5 (v / w)% of natural vegetable dyes, 0.1 to 10 (v / w)% of natural vinegar solution and natural vegetable dyes in the mixture of (a), vegetable protein, anionic surfactant, and low sugar solution (Low Sugar Water) 0.005 to 0.5 (v / w)%, nitrogen (0.1 ~ 10% by weight) of the addition of the color sand comprising the step of manufacturing by mixing with an electric mixer for even color production Way. Color sand produced by the method of claim 1. delete delete