JPH0466028A - Method for preventing and treating summer type disease injury occurring in green of golf links - Google Patents

Abstract

PURPOSE:To minimize the amount of agricultural chemicals used, protect lawn grass from disease injury, maintain and control raising of the lawn grass by freezing an aqueous solution containing a substance capable of preventing the growth of pathogenic germs, providing the form of small ice lumps or snowflakes and applying the resultant ice lumps or snowflakes to lesion parts. CONSTITUTION:An aqueous solution containing a substance capable of preventing growth of pathogenic germs is frozen to provide the form of small ice lumps or snowflakes. The resultant small ice lumps or snowflakes are then sprayed on the lawn surface. Various agricultural chemicals, hot spring water or deposits of hot-spring water, seawater or powder of seawater ingredients, acetic acid, edible vinegar, antimicrobial active ingredient extract, etc., are cited as the substance contained in the aqueous solution to be frozen.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for managing lawn vegetation on a golf course, particularly greens, during the summer.

[Conventional technology]

Due to the nature of the sport, the grass on golf courses, especially the grass on the greens, must be very short and must be mowed frequently.
In addition, they are trampled and injured by various heavy machines for management purposes and by many players.

Therefore, even if you use turfgrass that grows vigorously and is resistant to being placed separately, it will become softer and more susceptible to pests and damage during periods of high temperature, humidity, and rain, such as the summer in Japan.

If the turfgrass on a golf course is attacked by pests or damage, not only will the quality of putting deteriorate, but the turfgrass may even die.

In order to overcome these problems, the growth of turfgrass has been maintained by spraying a considerable amount of pesticides. However, since the runoff of agricultural chemicals from golf courses has an impact on nature, there is a desire to reduce the amount of agricultural chemicals used, and the spraying of agricultural chemicals at golf courses is becoming a social problem.

[Problem to be solved by the invention]

As mentioned above, problems such as the deterioration of the putting quality of golf course greens and the death of turfgrass have been solved by conventional growth and maintenance of turfgrass by spraying large amounts of synthetic pesticides. The problem cannot be solved by ad hoc measures using synthetic pesticides, but we must constantly cultivate strong green lawns.

And for growing a strong green lawn.

There are fundamental issues such as improving turfgrass varieties, but when diseases occur, accurate and effective measures must be taken.

The onset of disease in turfgrass is most severe from mid-June to late September.The present invention minimizes the amount of pesticides used during this period of high temperature and humidity, when pathogens are actively growing. The purpose is to protect grass from diseases and to maintain and manage the growth of turfgrass.

[Means to solve the problem]

In order to achieve the above object, the present invention freezes an aqueous solution containing a substance that inhibits the growth of pathogenic bacteria into a small ice block or snowflake shape, and applies this to the affected area.
It controls and treats lawn diseases by cooling the two-sided temperature and the low temperature state and the active ingredients contained in it work synergistically to suppress the spread of W4 bacteria. .

The method for treating lawn diseases on golf course greens of the present invention is to prevent the formation of frozen particles in the form of small ice blocks or snowflakes in and around lesions such as brown batch and bicillam blight, which occur in humid conditions at a temperature of 25°C or higher. Spread.

As a substance to be included in a freezing aqueous solution.

Various agricultural chemicals can be used to suppress the growth of filamentous fungi that cause disease in turfgrass, and other agricultural chemicals such as edible vinegar or acetic acid, hot spring water or yunohana, seawater or seawater component powders, or natural products can be used to kill, There are medicinal herbal extracts that have bacteriostatic properties.

For acetic acid, glacial acetic acid and other edible vinegars are particularly effective, especially black vinegar, which contains a lot of trace elements.In addition, wood vinegar, which is a by-product of wood carbonization and charcoal production, can be used as well.

The amount used is 0.1 to 0.1 as the acetic acid component in the aqueous solution before freezing.
Concentrations in the range of 1.0% are suitable.

Swirl flowers include sulfur flowers, mi-hekitsupan hana 1 calcareous flowers, etc., but sulfur flowers are preferable in terms of numbers. This is difficult to dissolve in water, so crush it well and melt it to 30 times its original size to make ice cubes.

Seawater is diluted 20 to 100 times to form ice cubes.

There are various types of pesticides, but they can all be used at a dilute concentration, about half the amount normally used.

Such an aqueous solution of pesticides and other substances that suppress lawn diseases is frozen in the form of small ice blocks or snowflakes to cover 50 to 75% of the lawn surface in and around diseased spots on the lawn. Spread. In particular, by treating the outer edges where the disease spreads, invasion of the disease can be more efficiently suppressed.

Other methods include crushing frozen blocks of ice into appropriate sizes and scattering the ice on the lawn, and even using snowmasks and thinners that spray cooling water in the form of snowflakes. You can also do it.

[Effect]

The main pathogens for lawns include Rhizoctonia brownpatch and Bicilamprite.
These pathogenic bacteria become more susceptible to disease when the nighttime temperature is 25° C. or higher and the humidity is 85% or higher for 5 to 7 days or more during the summer, that is, when the tropical nights continue.

In this way, by spraying small ice blocks or snowflakes on the lawn during the period when turfgrass diseases are most likely to progress, lowering the surface temperature can suppress the occurrence and progression of turf diseases and prevent excessive use of pesticides. In addition, even slow-release or weak Japanese and Chinese herbal pesticides can be used effectively.

In this way, it is possible to provide a golf course green free of turfgrass diseases.

〔Example〕

The present invention will be explained below using examples.

The present invention is not limited to this.

Freeze 100x and 200x acetic acid aqueous solutions to
Ice cubes of 3 cs cubes were sprayed on brown patch lesions and surrounding areas in the evening. The temperature of the two surfaces immediately below the ice block was 0.1 to 0.6°C, which was extremely lower than the ice-free grass surface temperature of 28.5°C, during about 1 hour of melting.

Measurement of lesion expansion 30 hours after treatment revealed that the expansion was only 0 to 60% of that without treatment.

The effectiveness of the treatment was confirmed.

〔Effect of the invention〕

According to the present invention, by scattering ice in the form of small ice blocks or snowflakes on the lawn surface, the temperature on two surfaces due to melting of the ice is lowered, thereby making it possible to prevent the occurrence of diseases of cut turfgrass during high summer temperatures.

By using natural products such as acetic acids, yunohana, seawater components, etc. in the aqueous solution, or by forming ice cubes using a dilute aqueous solution of pesticides, pesticides can be reduced by cooling the two-sided temperature by melting the ice and synergistic effect with the active ingredients of pesticides. This brings us one step closer to pesticide-free golf course lawn management.

Claims (3)

[Claims] (1) A method for preventing and treating summer diseases of lawns, which is characterized by scattering snowflake-like or small ice flakes on the lawn surface. (2) A method for inhibiting or treating the spread of lawn diseases, which comprises freezing an aqueous solution or water of an agricultural chemical that inhibits lawn diseases and spraying it on the lawn in the form of small ice blocks or snowflakes. (3) A lawn disease characterized by freezing an aqueous solution of natural substances such as hot spring water, hot spring water, seawater or its powder, or organic substances such as acetic acid or edible vinegar, and spraying it on the lawn in the form of small ice blocks or snowflakes. How to prevent or treat the spread of.