‍

The nightmare of turbulent grass: Large patch (Large patch)

‍

The main types of grass include Korean grass (Japanese grass) and rough terrain (domestic grass) grass. Large patch (Large patch) is an infectious disease that occurs in difficult grass, and is the same disease as “cancer” in human terms. The onset of the disease and prevention methods vary depending on the temperature and season, and once it appears, it often recurs.

Just as we have the best way to detect and treat cancer early, large patches are also the best way to detect and prevent cancer early. For this reason, the course team should carefully monitor locations with a history of outbreaks in a timely manner and take immediate action if even the slightest symptoms appear.

‍

‍

‍

A universal way to respond to large patches

- Update work and control

‍

‍

The hot and humid rainy season is a good environment for large patch pathogens to live. Areas with a history of one occurrence are very likely to recur, so thorough preparation is necessary. Common methods for dealing with large patches include:

‍

• update task
  • The renewal process is carried out through ventilation, vertical mowing, sweepers, and sand bays. This process can reduce the density of pathogens, increase the effectiveness of drug administration, and increase the density of grass.
    
    
• control
  • Control must be carried out in conjunction with the establishment of a detailed spray plan before the disease occurs. Grass is less resistant, so spraying an inexpensive drug several times is more effective than spraying an expensive drug once. Since large patches are particularly fatal from late fall to spring, when grass growth begins to decline, periodic chemical spraying is necessary.

‍

‍

‍

The importance of large patch monitoring and a nine-point comparison

‍

Even if the grass on the bottle ring is removed as a follow-up measure after symptoms of the large patch appear, there is a very high probability that pathogens are already lurking in the surrounding area. Therefore, if prevention fails, early detection and action of signs in the affected area is very important.

‍

‍

However, it's not as easy as you might think to find signs early by looking at a broad course using only written journal records and photos. Since they have to stay on site for a long time and carry out detailed inspections, the course team is very fatigued about this work.

In this case, we recommend the '9 segment comparison' function, which enables intensive monitoring of a specific area. If you specify an area with a history of large patches, you can easily check the condition of the grass in the box both visually and quantitatively, and at the same time, so abnormal signs can be detected early and taken action. In addition, the progress of the measures can also be compared and contrasted, so the control data for that year can be used as data to establish a control plan for the next year.

‍

‍

‍