JPH0356407A - Algae removing agent for lawn and removing method using same agent - Google Patents

Abstract

PURPOSE:To obtain the title removing agent containing an algicidal active ingredient as an active ingredient and exerting no influence of phytotoxicity and poor growth, etc., on lawn. CONSTITUTION:The title agent containing an algicidal active ingredient selected from germicide and herbicide for lawn as an active ingredient. The algicidal ingredient includes copper compound, carbamate compound, phthalic imide compound, disulfide compound, guanidine compound, urea compound, nitrile compound of dichloride compound. The removing agent is preferably used by preparing in a form of hydrate or liquid containing 1-80 wt.% active ingredient and when used, the removing agent is diluted to 100-2,000 times with water and then sprayed onto lawn.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an agent and method for removing algae growing on lawns of golf courses, parks, racetracks, road slopes, outdoor sports stadiums, etc. Conventional technologies and their problems> Lawns growing on golf courses, outdoor sports stadiums, etc. suffer from poor growth, withering, patching, etc. due to the influence of weeds, diseases, pests, etc., resulting in a significant deterioration in aesthetic appearance and the impediment to sports competitions. induces adverse effects. As a countermeasure, various pesticides (herbicides, fungicides, and insecticides) are used to prevent or treat the disease.

In recent years, in addition to the above-mentioned problems, the contamination of lawn surfaces by algae has been brought up. At golf courses, outdoor sports stadiums, etc., the growth of algae is increasing due to the use of heavy fertilization of lawns and sufficient watering using irrigation equipment.

In particular, Koraishiba, which is a typical variety in Japan, fades from green to brown in winter, resulting in uneven green-brown color.
This has led to a significant deterioration in aesthetic appearance. In addition, it is also a cause of a decrease in the punting quality on golf course greens.

The only solutions to these problems have been superficial treatments such as spraying colorants on the lawn to color the entire surface green.

Therefore, there is no known method to fundamentally solve the uneven green color of winter lawns by removing algae. Means for Solving the Problems〉 As a result of intensive research into the above problems, the present inventors have found that
The algae that grow on the lawns of golf courses and outdoor sports stadiums and cause pollution are mainly green algae and blue-green algae.As a result of further isolation and identification, the green algae are Chlorella sp. Pleurococcus sp. The blue-green algae is Oscillatoria sp. nostoc sp
．． I found something like this. Therefore, as a result of intensive research into a method that has an algicidal effect on these algae and does not cause chemical damage or poor growth to lawns, the present invention has been completed. That is, the present invention provides an algae removal agent for lawns containing an algicidal active ingredient as an active ingredient, preferably an algicidal active ingredient selected from lawn fungicides and herbicides. Algae removal agent for lawns, furthermore, the algicidal active ingredient is selected from a copper compound, a carbamate compound, a phthalimide compound, a disulfide compound, a guanidine compound, a urea compound, and an IJ compound.
The present invention provides an algae remover for lawns characterized by comprising more than one type of algae, and a method for removing algae from lawns using the same.

The remover of the present invention usually contains 1 to 80% algicidal active ingredient.
(hereinafter abbreviated as %) The rest is clay, talc, silica (white carbon), calcium carbonate, filler, anionic or nonionic surfactant, water and other additives, spreading agent, emulsifier, wetting agent, dispersion It is desirable to use it as an agent or a fixing agent.

As algicidal active substances, copper compounds include copper sulfate, calcium hydroxide copper sulfate, copper hydroxide sulfate, basic copper chloride, cupric hydroxide, PCPIq, oxine copper (I1 copper),
Copper nonylphenol sulfonate, dodecylbenzenesulfonic acid bis(ethylenediamine) w4 complex salt (II) are mentioned, and carbamate compounds include zinc ethylene bis dithiocarbamate, Manganese ethylene bis dithiocarbamate, and zinc ion-coordinated Manganese ethylene bis. Examples include dithiocarbamate and zinc dimethyldithiocarbamate, and examples of disulfide compounds include bis(
dimethylthiocarbamoyl) disulfide,
Examples of phthalimide compounds include N-trichloromethylthiotetrahydride phthalimide and N-tetrachloroethylthiotetrahydrophthalimide, and examples of guanidine compounds include 1.1'-ikidio(octamethylene)diguanidinium nitriacetate. -1-, 1.1'-
Iminiodi(octamethylene)diguanidinium nitribenzosulfonate is mentioned, and the urea compound is 3
-(3,4-dichlorophenyl) -1,1-dimethylurea-. 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea, l-(2-methylcyclohexyl)-3-phenylurea, 1-(α,α-dimethylbenzyl)-3-(paratolyl) ) urea, l-(α, α-
dimethylbenzyl)-3-methyl-3-phenylurea,
3-(5-tert-butyl-3-isoxazolyl)
- 1,1-dimethylurea is mentioned, and as a urea compound, 2-(4-chloro-6-ethylamino-1.3
．． Examples of dichloride compounds include 5-triazin-2-ylamino>-2-methylbropiononitrile and tetrachlorisophthalonitrile, and examples of dichloride compounds include 1.1'-dimethyl-4.4'-bipyridylium dichloride, etc. There is no problem in sharing two or more of these types. Some of the above compounds are already used as lawn fungicides and herbicides, but they are also applicable to the prevention and treatment of diseases such as leaf blight, brown patch, and pythium blight, as well as to the prevention and treatment of diseases such as Psyllium blight, Psyllium blight, and Pythium blight. They inhibit weed germination and kill weeds, and there are no products designed to remove algae from lawns. The algae removing agent of the present invention is preferably formulated and used in the form of a wettable powder or liquid.

When using it, it is best to dilute it 100 to 2000 times with normal water and spray it on lawns where algae are growing, so that the removal effect can be obtained quickly.

<Effects of the Invention> According to the present invention, it is possible to remove Vji that have occurred on lawns such as golf courses in a short time of 1 to 7 days and restore the aesthetic appearance, so it can be used for algae removal on lawns. can. Examples> Examples will be given below to specifically describe the practical effects of the present invention. "%" and "part" are based on weight unless otherwise specified.

Example I 40% 8-hydroxyquinoline copper, 15% 1.1'-Ikameniodi(octamethylene)diguanidinium triacetate, 45% Carbrex #80 silica, Hymar 2024 (anionic surfactant, Matsumoto Oil Products)
A 10% mixture is pulverized using a jet pulverizer to obtain a permanent agent.

Example 2 Copper sulfate (CuSOt' 5HzO) 15% and water 85% are uniformly dissolved to form a liquid.

Example 3 Bis(dimethylthiocarbamoyl>disulfide 50%)
A mixture of 40% clay and 10% Hymar 2024 (Matsumoto Oil Products) was pulverized using a Jesoto pulverizer and used as a permanent agent.

Test Example 1 (Antibacterial activity test) Each drug of the example was diluted with sterilized water, and the diluted solution III1 was mixed with 49 mJ of a medium (inorganic salt agar for algae) cooled to 50°C to sterilize a 9 cm diameter tube. Agar Hirasaka containing a 10 ppIa drug solution was prepared by placing the mixture in a petri dish. The test algae (separated from the Korai green of a golf course), which had been previously cultured on a slant medium at 25°C for 2 weeks at 1000 L, was inoculated into the above-mentioned petri dish. These petri dishes were cultured at 25° C. for 1000 L×10 days, and the presence or absence of algae growth was investigated. The results are shown in Table 1.

c,)-''/ The results shown in Table 1 show that the remover of the present invention was effective against separated N species at low concentrations.

Test Example 2 (Cup test) A golf course Korai green (Narashino Country Club) contaminated with algae was cut into a cylindrical shape (diameter IQ) using a hole cassotater.
csX to a depth of 5 cm) and transfer to a plastic cup. The camp is placed in an indoor greenhouse (glass-lined) at 25° C. and cultured for another two weeks, and when the surface of the Korean grass is completely covered with algae, it is treated with the removing agent of the example. In addition, as a control example, popular Shibakawa fungicide, commercially available herbicide fungicide Tosopudin M wettable powder [l,2bis(3-methoxycarbonyl-2-thioureide)benzene 70% manufactured by Nippon Soda]-, sterilization benlate T hydrating agent [, methyl-1-
(Butylcarbamoyl)-2-penzimidazolecarbame} 50%, manufactured by Kumiai Chemical ■], herbicide, 2.4
-D hydrating agent [2.4-dichlorophenoxyacetic acid 18%
, manufactured by Ishihara Sangyo@], herbicide simazine hydrating agent [2-chloro-4.5-bis(ethynoleamino)-S-triazine 5
0%, manufactured by Nihon Nohyaku ■] was tested.

The treatment method was to dilute each chemical in the example and control example with water and use an air gun. In addition, the processing amount was set as I It / rrt. We investigated the traces of chemical treatment, the number of days it takes for the algae on the grass to die, and the chemical damage to the grass. The results are shown in Table 2.

Test Example 3 (Field Test) The test site was Korai Green, which was contaminated by algae at a golf course. The chemicals of each example and control example diluted 500 times with water were sprayed, and the number of days until the algae died and the chemical damage to the lawn were investigated. In addition, the processing amount is 11/c
It was set as d.

The results are shown in Table 3. As described above, the algae removal agent of the present invention killed algae within 4 days and restored the Koryeo Green surface. Each control drug did not show any removal effect even after 20 days.
Furthermore, no chemical damage to the lawn was observed.

Claims (4)

[Claims] (1) An algae removal agent for lawns containing an algicidal active ingredient as an active ingredient. (2) The algae remover for lawns according to claim (1), wherein the algicidal active ingredient is selected from lawn fungicides and herbicides. (3) Claim (1) characterized in that the algicidal active ingredient consists of one or more selected from copper compounds, carbamate compounds, phthalimide compounds, disulfide compounds, guanidine compounds, urea compounds, nitrile compounds, and dichloride compounds. ) lawn algae remover. (4) A method for removing algae growing on a lawn, which comprises using the algae remover for lawns according to claim (1).