- Methods
Turf managers are familiar with using color as an indicator of turf health, greener is better. Green color correlates with healthy turf. Color is determined by the specific wavelengths of the light spectrum being reflected from turf. Sensors use a similar process to measure turf health, but in a more effective and targeted way. Sensors measure reflectance in areas of the light spectrum that have the highest correlation with turf health, including invisible infrared light. Sensor measurements are objective, precise and can detect small changes in turf health not visible to the human eye.
Sensor measurements are used to derive turf health indices. "Active sensors" like the models used with our service have a built in light source and a process to eliminate interference so that accurate measurements can be taken day or night, even during cloudy or overcast conditions.
- One Pixel At A Time
We use proven sensor technology to objectively assess the quality of a small area of turf, or as we call it, a "Pixel". A system including a sensor, GPS, data logger and power source is mounted on a mower or stand-alone unit. As the system is moved over the turf sensor information is recorded to the data logger along with a GPS location as often as 5 or 10 times per second, depending on the GPS model you are using. After data collection, you submit the information from the data logger through our website.
- Accessing the Service
Our service is available online from an internet connected computer. The upload process is similar to moving pictures from a digital camera to your computer. No special skills are required. Results and analysis are usually available within minutes.
- Putting the Pixels Back Together
Once we have your sensor data the analysis begins. During the analysis process, we re-assemble the pixels, creating a map of your turf. We analyze the map looking for areas that are unhealthy and provide you with a color coded map to show you what is good, what is bad, what is in between, and where you may want to focus your attention. Our system can detect "sub-visual" stress, small changes in turf health that are not visibly noticeable.
- Getting Better With Time
A single map gives new insight into the health of your turf, comparing two or more maps from different days is even more useful. You get an objective view as to whether or not your turf is improving, getting worse, or staying the same. Monitor responses to cultural practices by comparing pre-treatment and post-treatment quality. Set threshold levels of quality in your trend analysis report, and target your management strategies to achieve those goals.
