JP4669135B2 - Turfgrass cultivation method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for cultivating turfgrass without polluting the environment.
[0002]
[Prior art]
Conventionally, in maintenance of turfgrass used at golf courses etc., a large amount of chemical fertilizer is used, such as spraying liquid fertilizer 20 times and granular fertilizer 5 times a year, and to control diseases, Bactericides are sprayed 18-20 times a year, and large amounts of chemical pesticides have been used.
On the other hand, research and development to reduce the use of pesticides and fertilizers used in turfgrass management has been actively carried out as pesticides and fertilizer components used in golf courses in recent years contaminate water quality environments such as rivers. It has become.
[0003]
For example, in Japanese Patent Laid-Open No. 8-298858, the title is “Low growing method”.
Although a method of mixing sodium N-monomethyldithiocarbamate as a pesticide with a low concentration and low environmental pollution has been shown, it is a chemically synthesized pesticide itself, although environmental pollution is low. The impact cannot be ignored.
[0004]
Japanese Patent Laid-Open No. 10-36209, entitled “Method for Promoting Lawn Growth”, sprays a stabilized aqueous solution of chlorine dioxide on the lawn surface, and is harmful to human livestock without polluting the natural environment. It is said that it can promote the growth of lawn by controlling microorganisms. However, this is also a chemical substance and cannot be said to be completely harmless.
Thus, the present condition is that the method of growing turf grass without polluting the environment has not yet been found.
[0005]
[Problems to be solved by the invention]
The challenge is to develop turfgrass cultivation methods that can reduce the use of pesticides and fertilizers and reduce environmental impact.
[0006]
[Means for Solving the Problems]
As a result of diligent efforts to solve the above problems, the present inventors have found that the problem can be solved by spraying black vinegar on turfgrass.
[0007]
That is, the present invention
(1) A method for maintaining the greenness of turfgrass, characterized by spraying black vinegar,
(2) The method for maintaining the greenness of turfgrass according to (1), characterized in that black vinegar is sprayed when the average daily temperature is 5 ° C or less and the growth of the lawn stops.
(3) The method for maintaining the greenness of turfgrass according to (1) or (2), wherein black vinegar diluted 100 to 500 times is sprayed.
(4) A turfgrass pest control method characterized by spraying black vinegar,
(5) disease bacteria Sukurerotenia (Sclerotinia) bacteria, Rhizoctonia (Rhizoctonia) bacteria wilt (Gaeumannomyces) features to (4) turfgrass method disease bacteria control according to be any one or more bacteria,
(6) The method for controlling disease-causing bacteria according to (4) or (5), characterized in that black vinegar is sprayed when the average daily temperature becomes 10 ° C. or higher and sprouting of turfgrass begins.
(7) The present invention relates to a disease control method for turfgrass according to (4), (5) or (6), wherein black vinegar diluted 50 to 100 times is sprayed.
[0008]
Traditionally, vinegar contains many organic acids and trace components in addition to acetic acid, acetone and methanol, which are the main components, and it is said that there are also plant growth-promoting factors. It is used for the cultivation of agricultural products.
However, in a situation where vinegar is not effective for any plant, the present applicant found that black vinegar is effective for promoting rice growth, increasing yield, controlling rice blast, and applied for a patent ( (Japanese Patent Application No. 11-343514).
[0009]
The present invention has been made based on this finding, and it has been found that black vinegar has a fertilizer effect on turfgrass, an effect of enhancing resistance to diseases, and an inhibitory effect on growth of diseases.
Ordinary rice vinegar uses polished rice as a raw material, while black vinegar is characterized by using a raw material containing a brown rice layer. Therefore, black vinegar is 6 times more protein and 10 times more free amino acid than rice vinegar.
[0010]
In the present invention, black vinegar refers to brown rice black vinegar made from brown rice and brown wheat black vinegar made from barley.
As for the spraying time of black vinegar, in order to maintain the greenness of the lawn in winter, the average daily temperature is 5 ° C or less, and the lawn stops growing from January to early March (depending on the region). Preferably, this also has the effect of early greening in early spring.
[0011]
In order to control diseases caused by soil-borne fungi such as dollar spot disease, it is preferable to spray from April to early May (which varies depending on the region) when the average daily temperature rises above 10 ° C and turf grass germination begins. .
Dollar spot disease is caused by Sclerotinia bacteria, and is a disease that can cause lesions of about one dollar coin on the surface of the lawn.
According to the present invention, the fertilizer application frequency can be reduced to about 10 times, and the agricultural chemical application frequency can be halved.
Hereinafter, the present invention will be described in more detail with reference to examples.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
[Example 1]
Of the bentgrass often used for golf course green, the latest varieties L-93, Crenshaw, and South Shore were used to conduct a black vinegar spray test.
For each variety, test plots for spraying black vinegar solution diluted 10,100,500,1000,2000 times, a total of five test plots, and black vinegar solution diluted to an arbitrary concentration The sample was sprayed once at a rate of 1 L per 1 m ² , and compared with a control group in which nothing was sprayed.
[0013]
In order to confirm the effect of black vinegar spraying, the chromaticity, density, soundness (including disease resistance), and overall evaluation of the lawn every week are classified into five levels (1: poor to 5: best). ) Was used to score the turfgrass growth. The results are shown in FIG. 1, FIG. 2, FIG. 3 and FIG.
Looking at this, in the test plots sprayed with 100-fold diluted solution and 500-fold diluted solution, the color score was about 0.5 to 1 point higher than other plots from the beginning of January to early February and from the beginning of March to April. It was confirmed that black vinegar spraying is effective for maintaining the greenness of turfgrass in winter and greening in spring.
[0014]
In addition, looking at the transition of the health score, which is an item for assessing the incidence of disease, the health score was maintained at 3 to 3.5 in the 10-fold diluted solution spray area since May. In other test areas, Dollar Spot disease occurred and the health score decreased. By spraying a solution obtained by diluting black vinegar 10 times, it became clear that dollar spot disease that is likely to occur in bentgrass in May to June can be prevented.
[0015]
[Example 2]
In order to examine the growth inhibitory effect of black vinegar on the pathogens of turfgrass, the growth of pathogenic bacteria was investigated on a medium supplemented with black vinegar.
Rhizoctonia bacteria ( Rhizoctonia fungi that cause major diseases on golf course lawn) are added to PDA medium (potato potato broth medium with glucose added) to a concentration of 50, 100, 500, 1000-fold dilution. , Brown patch disease), Sclerotinia fungus ( Doller spot disease), Blight fungus ( Gaeumannomyce s fungus, Takeall patch disease, etc.), inoculated in a dark room at 25 ° C, and the hyphal growth The investigation was conducted one week later.
[0016]
As a result, although the mycelium grew in the control medium (no addition), the mycelia did not grow on any medium on which the 50-fold diluted black vinegar solution was added. It has become clear that it has an inhibitory effect on the growth of the major pathogens.
[0017]
[Example 3]
A fertilizer effect test of black vinegar on pen cloth, the most used variety of bent green in Japanese golf courses, was conducted.
The black vinegar with different liquid fertilizer and concentration was sprayed on the pen cloth grown in the pot in the greenhouse to compare the growth of turfgrass.
Eight kinds of test plots were set, and black vinegar solution diluted only 10 times, 50 times, 100 times, 500 times, only liquid fertilizer, 50 times diluted black vinegar liquid + liquid fertilizer, 100 times diluted black vinegar liquid + liquid fertilizer, It was sprayed at a rate of 1 L per 1 m ² . The result is shown in FIG.
[0018]
Looking at this, at the time of the survey on March 17 one week after the application of black vinegar, the overall evaluation score in the 500-fold area was the highest, and as with the results of the field test, the black vinegar solution diluted to about 500-fold By spraying, it was confirmed that the growth of pen cloth was improved without applying liquid fertilizer, which is a chemical fertilizer.
[0019]
【The invention's effect】
According to the present invention, the greenness of turfgrass is maintained and turfgrass diseases such as dollar spot disease can be controlled.
[Brief description of the drawings]
FIG. 1 is a graph showing the effect of black vinegar spraying on turf chromaticity.
FIG. 2 is a graph showing the effect of black vinegar spraying on the density of turfgrass.
FIG. 3 is a diagram showing the effect of black vinegar spraying on turfgrass health.
FIG. 4 is a graph showing the effect of black vinegar spraying on the overall evaluation score of turfgrass.
FIG. 5 is a graph showing the effect of spraying black vinegar on the growth of turfgrass.

Claims (2)

The average temperature of the day will be 5 ℃ below, the green of maintenance method of turf grass, characterized in that the spraying black vinegar by the time the lawn of growth stops. Grass green degree maintenance method according to claim 1, wherein the spraying of black vinegar diluted 100-500 fold.

Images