JPH048226A - Method for controlling lawn cooling pipe of golf course green at high temperature in summer and apparatus therefor - Google Patents

Abstract

PURPOSE:To minimize the amount of an agricultural chemical used, protect lawn grass from disease and injury and perform raising maintenance and control of the lawn grass by cooling the temperature of water for sprinkling thereof to a specific temperature or below and sprinkling the resultant water on lawn in a golf course green. CONSTITUTION:The temperature of water for sprinkling thereof is cooled to <=10 deg.C and the cooled water is then sprinkled over lawn in a golf course green. For example, a heat exchanger 7 is arranged at a suitable place of a pipe 1 in a sprinkler device 3 having nozzles 4 for sprinkling water from a water source through the pipe 1 on the green 2 and the cooled water is circulated from a refrigerator 5 through a cooling water pipe 6 to the heat exchanger 7 to cool the water for sprinkling. Thereby, the resultant water can be sprinkled on the green 2 to reduce the temperature of the lawn surface and suppress onset of disease injury of lawn grass.

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]

Bentgrass is the main type of turfgrass cultivated at golf courses because of its good batting quality.

However, bentgrass has poor resistance to filamentous fungi.
Diseases occur under hot, humid weather conditions.

In order to deal with these obstacles, the growth of turfgrass has currently been maintained by spraying large amounts of pesticides. However, since the runoff of pesticides from golf courses has an impact on nature, there is a desire to reduce the amount of pesticides used, and agricultural spraying at golf courses is becoming a social problem.

On the other hand, efforts are being made to develop heavy-duty bentgrass varieties, but so far they have not been put to practical use.

[Problem to be solved by the invention]

As mentioned above, the growth and maintenance of turfgrass has been carried out by spraying large amounts of pesticides on golf course greens.

The purpose of the present invention is to minimize the amount of agricultural chemicals used in the summer, protect turfgrass from diseases, and maintain and manage the growth of turfgrass.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention cools the front temperature by sprinkling cooling water or mist on the front during high temperatures in summer, suppressing the spread of pathogens, and reducing summer stress. We have developed a cooling management system for field greens.

In the present invention, cooling water at a temperature of 0°C to 10°C is sprinkled or misted onto the green lawn surface, and the cooling water directly lowers the temperature and the lawn surface is cooled by the heat of evaporation of the water. The principle is

In the present invention, cooling water of about 0° C. to 10° C., which is produced using a refrigerator and a heat exchanger if necessary, is fed under pressure to an existing sprinkler pipe or a dedicated mist pipe. The water pressure of the head with the water sprinkling holes is 5 to 8 kg/-, and the amount of water is adjusted by adjusting the spray time.

[Effect]

The main pathogens for lawns include Rhizoctonia brownpatch and Bicillum blight.
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 cooling the water for irrigation and lowering the front temperature at night when turfgrass diseases are most likely to progress, it is possible to suppress the occurrence and progression of turfgrass diseases, drastically reduce the use of excessive pesticides, and , even slow-acting 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]〕

Sprinkle water with a water temperature of 25°C at a rate of 2001/min to 3°C.
A cooling system with a refrigeration capacity of 100 USRT was installed, which can provide 100 US RT of chilled water.

For the green surface condition at a temperature of 33℃ and humidity of 70%,
Water was sprinkled for 5 minutes with 20,017 minutes of cooling water at a water temperature of 3° C. from the above-mentioned cooling device.

In this case, the lawn surface temperature could be lowered to 12°C, and when this was done every night for 5 days, it was possible to suppress the occurrence of turfgrass diseases.

[Example 2] Nozzle 4 spraying water on green 2 from a water source via piping 1
A heat exchanger 817 is disposed at an appropriate location in the piping 1 of the sprinkler system 3 having a heat exchanger 817, and cooling water is circulated from the refrigerator 5 to the heat exchanger 7 through the cooling water piping 6 to cool the water for sprinkling and sprinkle water on the green 2. By lowering the temperature of the turfgrass surface, it is possible to suppress the occurrence of turfgrass diseases.

〔Effect of the invention〕

As described above, the lawn cooling management method and device for golf course greens can stop or delay the propagation of pathogenic bacteria that cause great damage in the summer, restore the growth of turfgrass, and prevent heat and W4 progenitor bacteria from affecting turfgrass. Stress can be reduced, the amount of pesticides used can be reduced, the effectiveness and use of Chinese herbal pesticides can be ensured, and the range of herbal medicines can be expanded.

[Brief explanation of the drawing]

Figure 1 shows a sprinkler installed with the cooling device of the present invention.
FIG. 2 is a system diagram of the same system as above using another cooling device of the present invention. 1...Piping, 2...Green,
3...Sprinkler-4...Nozzle,
5... Refrigerator, 6... Cooling water piping,
7...Heat exchanger, 8...Cold water pump.

Claims (1)

[Scope of Claims] 1. A lawn cooling management method at high temperatures, characterized by cooling the water temperature of watering water to 10° C. or lower and sprinkling the cooled water on the lawn of a golf course green. 2. In a sprinkler device 3 having a nozzle 4 that sprinkles water from a water source to a green 2 through a pipe 1, the pipe 1
This system for cooling the ground surface temperature of a golf course green is characterized in that a refrigerator 5 is disposed at an appropriate location of the green 2, cooling water is passed therethrough, and the cooling water is sprinkled onto the green 2. 3. In a sprinkler device 3 having a nozzle 4 that sprinkles water from a water source to a green 2 through a pipe 1, the pipe 1
A golf ball characterized in that a heat exchanger 7 is disposed at an appropriate location, and cooling water is circulated from the refrigerator 5 to the heat exchanger 7 through a cooling water pipe 6 to cool the water for sprinkling and sprinkle the cooling water on the green 2. Field Green's ground surface temperature cooling system.