We are now 3 weeks from our first application of non-selective, herbicide to be applied on the mapped areas of Bermuda grass infestation. As I have shared in previous posts, we identified the Bermuda within our fairways by using aerial, drone photography. We conducted the drone flights this past winter when the Bermuda was fully dormant. The color differential between the Bermuda and the Bent was extremely evident which allowed us to draw GPS boundaries around the Bermuda.
Last week, we loaded the sprayer with water and turf paint. We then printed off our maps and watched as the sprayer crossed over the boundaries within the fairway. We were very pleased with the accuracy of the maps and the mechanical functionality of the sprayer.
This coming week, we will ratchet up the "stakes" by applying Pylex to the Bermuda areas. The Pylex, applied at .1 oz/acre will not kill the Bermuda (or we would just use that:), but it will bleach it white. By using the herbicide and the subsequent color reaction, we will then be able to visually inspect the accuracy of the drone maps and the accuracy of the sprayer itself. Should we notice overspray or misses, we will note those areas and supplement the applications with hand work.
Once the Pylex is sprayed next week, it will take a week or so to notice the discoloration. In our next post, we will report back on the success of this second test.
*As a continued reminder, the first herbicide application is scheduled for July 10th, 2023. From July 15th through our August closure, please expect randomized areas of dead/burnt turf scattered throughout the fairways.*
